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Artículos de revistas sobre el tema "Adsorption of CO2"

Autor: Grafiati
Publicado: 4 de junio de 2021
Última modificación: 20 de febrero de 2023

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1

Cui, Leyu, Kun Ma, Ahmed A. Abdala, et al. "Adsorption of a Switchable Cationic Surfactant on Natural Carbonate Minerals." SPE Journal 20, no. 01 (2014): 70–78. http://dx.doi.org/10.2118/169040-pa.

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Summary A switchable cationic surfactant (e.g., tertiary amine surfactant Ethomeen C12) was previously described as a surfactant that one can inject in high-pressure carbon dioxide (CO2) for foam-mobility control. C12 can dissolve in high-pressure CO2 as a nonionic surfactant and equilibrate with brine as a cationic surfactant. Here, we describe the adsorption characteristics of this surfactant in carbonate-formation materials. The adsorption of this surfactant is sensitive to the equilibrium pH, the electrolyte composition of the brine, and the minerals in carbonate-formation materials. Pure
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2

Hernández, Miguel Ángel, Karla Quiroz-Estrada, Gabriela I. Hernandez-Salgado, et al. "Nanoporosity and Isosteric Enthalpy of Adsorption of CH4, H2, and CO2 on Natural Chabazite and Exchanged." Separations 9, no. 6 (2022): 150. http://dx.doi.org/10.3390/separations9060150.

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This paper describes the isosteric enthalpy through narrow pores at low levels of coverage through adsorption of CO2, CH4, and H2 on pores in natural chabazite exchanged with aqueous solutions of Na+, Mg2+, and Ca2+ salts at different concentrations, and with variable time and temperature of treatment. Experimental data of CO2, CH4, and H2 adsorption were treated by the Freundlich and Langmuir equations. Complementarily, the degree of interaction of these gases with these zeolites was evaluated by the evolution of isosteric enthalpy of adsorption. The exchange with Mg2+ and Na+ favors an incre
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3

Han, Kun Kun, Yu Zhou, Jing Jia Wen, and Jian Hua Zhu. "Novel CO2 Capturer Derived from SBA-15 Monolith Coated with Amine." Advanced Materials Research 287-290 (July 2011): 3081–84. http://dx.doi.org/10.4028/www.scientific.net/amr.287-290.3081.

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A new strategy of preparing the efficient CO2 adsorbent without further molding is reported in this article. This novel shaped CO2 capturer is obtained by coating amine on the SBA-15 monolith with a specific 3D net-linked morphology that favors the accessibility of amine guest in the channel. The resulting composites are characterized with XRD, N2 adsorption, SEM and TEM techniques, and their adsorptive ability is assessed with CO2-TPD test, offering a high adsorption capacity of 144 mg g-1and stable cyclic adsorption-desorption performance for potential application.
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4

Politakos, Nikolaos, Luis Serrano Cantador, Juan Antonio Cecilia, Iranzu Barbarin, and Radmila Tomovska. "CO2 Capture by Reduced Graphene Oxide Monoliths with Incorporated CeO2 Grafted with Functionalized Polymer Brushes." Applied Sciences 11, no. 23 (2021): 11154. http://dx.doi.org/10.3390/app112311154.

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The monolithic materials of reduced graphene oxide (rGO) can be used successfully in CO2 adsorption. Here, the incorporation of CeO2 particles with and without polymer brushes grafted from the particles showed that the structural properties could be changed, affecting the adsorption of CO2. Polymer brushes of (1) poly(acrylic acid) (PAA), (2) poly(vinyl caprolactam) (PVCL) and (3) poly[(2-(methacryloyloxy)ethyl) trimethylammonium chloride] (PMETAC) were grafted from CeO2 via reversible addition−fragmentation chain transfer (RAFT) polymerization. The preparation of monoliths of rGO with differe
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5

Yasmin, Yuriz, Mohd Noor Mazlee, W. H. Chan, J. B. Shamsul, and Azmi Rahmat. "Porous Solid Carbon Dioxide Adsorbent Using Cost Effective Materials: A Review." Applied Mechanics and Materials 786 (August 2015): 84–88. http://dx.doi.org/10.4028/www.scientific.net/amm.786.84.

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Greenhouse effects were generated from anthropogenic emissions of carbon dioxide (CO2) into the atmosphere. High concentration of CO2 has recognised as major causes of global warming. In order to keep CO2 at a manageable level, adsorptions of these gases from the flue gases is necessary. Developing a low cost porous solid adsorbent as adsorption media become a great attention due to environmental and economic concerns. This paper has reviewed the cost effective materials with a suitable methods to fabricate the porous solid adsorbent. This paper also has discussed the adsorption mechanisms of
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6

Kuwer, Pushpmala, Anshul Yadav, and Pawan Kumar Labhasetwar. "Adsorption of cupric, cadmium and cobalt ions from the aqueous stream using the composite of iron(II,III) oxide and zeolitic imidazole framework-8." Water Science and Technology 84, no. 9 (2021): 2288–303. http://dx.doi.org/10.2166/wst.2021.452.

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Abstract In recent research, the composite of Fe3O4 and metal-organic frameworks have shown great potential in removing potentially toxic metals from water. We conducted the adsorption studies of potentially toxic metal ions (Cu2+, Co2+ and Cd2+) using the composite of Fe3O4 and zeolitic imidazole framework-8 (Fe3O4@ZIF-8) for the first time. The solvothermal technique was used to synthesize the Fe3O4. The magnetic ZIF-8 offers high thermal stability, greater adsorption surface, good removability, and high chemical and thermal stability. Characterization techniques such as X-ray diffraction (X
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7

Chen, Lei, Takumi Watanabe, Hirofumi Kanoh, Kenji Hata, and Tomonori Ohba. "Cooperative CO2 adsorption promotes high CO2 adsorption density over wide optimal nanopore range." Adsorption Science & Technology 36, no. 1-2 (2017): 625–39. http://dx.doi.org/10.1177/0263617417713573.

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Separation of CO2 based on adsorption, absorption, and membrane techniques is a crucial technology necessary to address current global warming issues. Porous media are essential for all these approaches and understanding the nature of the porous structure is important for achieving highly efficient CO2 adsorption. Porous carbon is considered to be a suitable porous media for investigating the fundamental mechanisms of CO2 adsorption, because of its simple morphology and its availability in a wide range of well-defined pore sizes. In this study, we investigated the dependence of CO2 adsorption
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8

Tangsathitkulchai, Chaiyot, Supunnee Junpirom, and Juejun Katesa. "Carbon Dioxide Adsorption in Nanopores of Coconut Shell Chars for Pore Characterization and the Analysis of Adsorption Kinetics." Journal of Nanomaterials 2016 (2016): 1–10. http://dx.doi.org/10.1155/2016/4292316.

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The uptake data of CO2 adsorption at 273 K by coconut shell chars prepared at various carbonization temperatures from 250 to 550°C were used for characterizing pore texture of chars as well as the analysis of CO2 adsorption kinetics. The equilibrium isotherms were used to determine the porous texture of chars, employing the DR equation and GCMC simulation. It was found that all the test chars contain micropores of a size range from 0.8 to 2.2 nm with the pore size distribution becoming wider for char prepared at a higher carbonization temperature. Porous properties of chars, including surface
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9

Daud, N. K., and Nurul Huda Insyirah Mohammad Najib. "CO₂ Adsorption on Zeolites and Fe-MOF for Carbon Capture and Storage (CCS)." Journal of Chemical Engineering and Industrial Biotechnology 8, no. 1 (2022): 27–32. http://dx.doi.org/10.15282/jceib.v8i1.7795.

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This research focused on the development of suitable materials for capturing and storing CO2 (CCS). Ferum-metal organic framework (Fe-MOF) and zeolite were prepared as adsorbents for the CO2 adsorption process. These adsorbents were characterised by employing X-ray diffraction (XRD) and Fourier Transform Infrared (FTIR) analysers. The adsorptive capacity of CO2 was conducted in an assembled facility containing of a metallic tubular container set up with a pure CO2 gas stream from a cylinder-shaped tank. The performance of these two adsorbents was investigated using two different parameters whi
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10

Liu, Shuyang, Baojiang Sun, Jianchun Xu, Hangyu Li, and Xiaopu Wang. "Study on Competitive Adsorption and Displacing Properties of CO2 Enhanced Shale Gas Recovery: Advances and Challenges." Geofluids 2020 (December 23, 2020): 1–15. http://dx.doi.org/10.1155/2020/6657995.

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CO2 enhanced shale gas recovery (CO2-ESGR) draws worldwide attentions in recent years with having significant environmental benefit of CO2 geological storage and economic benefit of shale gas production. This paper is aimed at reviewing the state of experiment and model studies on gas adsorption, competitive adsorption of CO2/CH4, and displacement of CO2-CH4 in shale in the process of CO2-ESGR and pointing out the related challenges and opportunities. Gas adsorption mechanism in shale, influencing factors (organic matter content, kerogen type, thermal maturity, inorganic compositions, moisture
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11

Cheng, Kai, Songjian Zhao, Jiazheng Ren, Haoran Li, and Yongsheng Chen. "CO2 Self-Poisoning and Its Mitigation in CuO Catalyzed CO Oxidation: Determining and Speeding up the Rate-Determining Step." Catalysts 11, no. 6 (2021): 654. http://dx.doi.org/10.3390/catal11060654.

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Cu-based catalysts are promising for CO oxidation applications with catalyst deactivation being a major barrier. We start with a CuO/Al2O3 catalyst and find that while the CO conversion decreases, CO2 accumulates and the average Cu chemical state stays the same. It suggests CO2 self-poisoning, i.e., CO2 desorption is the rate-determining step. Subsequently, experiments are performed to prove this hypothesis by showing (1) CO2 adsorption inhibits O2 adsorption, (2) complete desorption of CO2 regenerate the catalyst, (3) pre-adsorbed CO2 quenches catalyst activity which recovers during the react
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12

Wan Ismail, Wan Norfazilah, Mohamad Irfan Arif Irwan Syah, Nur Hanisah Abd Muhet, Nurul Hidayah Abu Bakar, Hartina Mohd Yusop, and Nurlin Abu Samah. "Adsorption Behavior of Heavy Metal Ions by Hybrid Inulin-TEOS for Water Treatment." Civil Engineering Journal 8, no. 9 (2022): 1787–98. http://dx.doi.org/10.28991/cej-2022-08-09-03.

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The present work reports the adsorption behavior involved in the adsorption of heavy metal ions using a hybrid inulin-tetraethoxysilane (TEOS) adsorbent produced through the sol-gel process. An aqueous multi-element solution was used in order to examine the inulin-TEOS adsorbent efficiency in removing Cd2+, Co2+, and Ni2+ ions. The effects of the contact duration, adsorbent dosage, initial concentration, and solution pH on the adsorption of the targeted metal ions in batch systems were evaluated. The optimal conditions for the removal of all targeted heavy metals were as follows: 30 mg of an a
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13

Ma, Hong Mei, Zhi Liang Zhu, and Yong Qian Cheng. "Simultaneous Removal of Heavy-Metal Ions by MnO2 Loaded D301 Resin." Advanced Materials Research 255-260 (May 2011): 2791–96. http://dx.doi.org/10.4028/www.scientific.net/amr.255-260.2791.

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MnO2-loaded D301 weak basic anion exchange resin was used as adsorbent to simultaneously remove Co2+, Ni2+, Cd2+, Zn2+ andCu2+ from aqueous solution contained high concentration of alkali and alkaline-earth metals ions. The effects of solution pH and coexistent ions on the adsorption were investigated. The results indicated that Co2+, Ni2+, Cd2+, Zn2+ andCu2+ can be simultaneously removed in the wide pH range of 3 to 8. The coexistence of PO43− decreased the heavy metal ions removal rate, but for other high concentrations coexistence cations and anions such as Na+, K+, Cl−, NO3−, SO42− and HCO
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14

Zhou, Neng, Zhen Zhou, Yuan Qin, and Chu Jie Zeng. "Study on the Removal of Heavy Metals by Biomass." Advanced Materials Research 634-638 (January 2013): 276–79. http://dx.doi.org/10.4028/www.scientific.net/amr.634-638.276.

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In this paper, the adsorption of heavy metals by biomass, namely dry garlic stem, an environmentally-friendly and natural adsorbent, were studied．The efficiency of the adsorbent was studied under different experimental conditions by varying parameters such as pH, initial concentration and contact time using batch adsorption technique. The results show that at pH 5.50, room temperature, the adsorption time 90 min and the amount of garlic stem 0.5 g, Co2+ have the maximum adsorption capacity. The maximum adsorption capacity of the Co2+ on garlic stem is 14.9 mg/g. At pH 9.50, the adsorption time
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15

Boonchuay, Arunaporn, and Patcharin Worathanakul. "The Diffusion Behavior of CO2 Adsorption from a CO2/N2 Gas Mixture on Zeolite 5A in a Fixed-Bed Column." Atmosphere 13, no. 4 (2022): 513. http://dx.doi.org/10.3390/atmos13040513.

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The objective of this research was to investigate the behavior and conditions for CO2 adsorption using a mixture of CO2/N2 over a fixed-bed column of zeolite 5A. The study was performed with a variation in gas composition of CO2/N2 as a 20/80, 50/50, and 80/20 volume %, the adsorption temperatures as 298, 333, and 373 K and the total feed flow rates as 1, 2, and 4 L/h under 100 kPa pressure. The Bohart–Adams, Yoon–Nelson, and Thomas models were used to predict the breakthrough behavior of CO2 adsorption in a fixed column. Furthermore, the adsorption mechanism has been investigated using the ki
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16

Wen, Zhihui, Yunpeng Yang, Qi Wang, and Banghua Yao. "Mechanism and Characteristics of CH4/CO2/H2O Adsorption in Lignite Molecules." Geofluids 2021 (March 20, 2021): 1–11. http://dx.doi.org/10.1155/2021/5535321.

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Adsorption characteristics of coalbed methane (CBM) are significant to investigate the absorption of coal, shale, and porous media. In particular, adsorption characteristics of CH4, CO2, and H2O play an important role in predicting CBM output and geologic sequestration potentials of CO2 in research fields of CO2-enhanced CBM recovery (CO2-ECBM) and sequestration of CO2. In this work, adsorption characteristics of CH4, CO2, and H2O in lignite molecules were simulated through the grand canonical Monte Carlo (GCMC) method and molecular dynamics (MD) method. Research results demonstrated that give
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17

Wang, Yanlin, Baihe Guo, Jingnan Guo, Man Zhang, Hairui Yang, and Yan Jin. "K2CO3-Impregnated Al/Si Aerogel Prepared by Ambient Pressure Drying for CO2 Capture: Synthesis, Characterization and Adsorption Characteristics." Materials 13, no. 17 (2020): 3741. http://dx.doi.org/10.3390/ma13173741.

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A new potassium-based adsorbent for CO2 capture with Al aerogel used as support is proposed in this work. The adsorbents with different surface modifiers (tetraethyl orthosilicate (TEOS) and trimethyl chlorosilane (TMCS)) and different K2CO3 loadings (10%, 20%, 30% and 40%) were prepared by sol-gel and iso-volume impregnation processes with ambient pressure drying. The CO2 adsorption performance of the adsorbents were tested by a fixed-bed reactor, and their adsorption mechanisms were studied by scanning electron microscopy (SEM), Brunauer Emmett Teller (BET), X-ray diffraction (XRD), Fourier
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18

Chen, Yilan, Junjie Wu, Xin Wang, Minyi Liu, and Yamin Liu. "Synthesis, Characterization and Application of Amine-Functionalized Hierarchically Micro-Mesoporous Silicon Composites for CO2 Capture in Flue Gas." Molecules 27, no. 11 (2022): 3429. http://dx.doi.org/10.3390/molecules27113429.

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An efficient CO2 adsorbent with a hierarchically micro-mesoporous structure and a large number of amine groups was fabricated by a two-step synthesis technique. Its structural properties, surface groups, thermal stability and CO2 adsorption performance were fully investigated. The analysis results show that the prepared CO2 adsorbent has a specific hierarchically micro-mesoporous structure and highly uniformly dispersed amine groups that are favorable for the adsorption of CO2. At the same time, the CO2 adsorption capacity of the prepared adsorbent can reach a maximum of 3.32 mmol-CO2/g-adsorb
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19

Gao, Tao, Cunbao Deng, and Qing Han. "Experimental Research on the Law of Energy Conversion during CO2 Sequestration in Coal." Energies 14, no. 23 (2021): 8079. http://dx.doi.org/10.3390/en14238079.

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CO2 sequestration in coal is mainly attributed to adsorption. The adsorption experiments of CO2 were conducted at injection pressures ranging from 1 to 3 MPa on coal samples with five kinds of particle sizes. The fitting degree of four classical adsorption models to experimental adsorption data was systematically compared. The adsorption properties of CO2 were comprehensively discussed. The temperature changes of coal samples at different positions during CO2 adsorption were measured by using the improved adsorption tank, and then the energy conversion law was obtained. The results showed incr
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20

Lisovski, Oleg, Sergei Piskunov, Dmitry Bocharov, et al. "CO2 and CH2 Adsorption on Copper-Decorated Graphene: Predictions from First Principle Calculations." Crystals 12, no. 2 (2022): 194. http://dx.doi.org/10.3390/cryst12020194.

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Single-layer graphene decorated with monodisperse copper nanoparticles can support the size and mass-dependent catalysis of the selective electrochemical reduction of CO2 to ethylene (C2H4). In this study, various active adsorption sites of nanostructured Cu-decorated graphene have been calculated by using density functional theory to provide insight into its catalytic activity toward carbon dioxide electroreduction. Based on the results of our calculations, an enhanced adsorption of the CO2 molecule and CH2 counterpart placed atop of Cu-decorated graphene compared to adsorption at pristine Cu
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21

Mfoumou, C. Mve, S. Mignard, and T. Belin. "The preferential adsorption sites of H2O on adsorption sites of CO2 at low temperature onto NaX and BaX zeolites." Adsorption Science & Technology 36, no. 5-6 (2018): 1246–59. http://dx.doi.org/10.1177/0263617418762494.

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Study of preferential adsorption sites of H2O on NaX and BaX zeolites was carried out after adsorption/desorption of carbon dioxide (CO2). The profiles of CO2 desorption revealed two distinct zones. The first one, at low temperature (T < 533 K), corresponding to physisorbed CO2 where BaX zeolite has an energy of adsorption higher than that of NaX as well as strong interactions of adsorbent/adsorbate. The second one (533–623 K) corresponds to the chemisorbed CO2. The presence of water influences CO2 adsorption. The effect is more important for NaX than for BaX. For NaX, water occupies the ad
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22

Mohd Zul Amzar Zulkifli, Azfarizal Mukhtar, Muhammad Faizulizwan Mohamad Fadli, Anis Muneerah Shaiful Bahari, Akihiko Matsumoto, and Halina Misran. "CFD Simulation of CO2 and Methane Adsorption at Various Temperature for MOF-5 using Dual-site and Single-site Langmuir Model." CFD Letters 13, no. 10 (2021): 1–10. http://dx.doi.org/10.37934/cfdl.13.10.110.

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The annual increase in energy demand has led to an increase in greenhouse gas emissions, in particular CO2 emissions from the power generation industry. Carbon Capture and Utilization are technologies applied to capture CO2 gases and transform the gases into a different energy source. The adsorption technology to capture CO2 gases was chosen due to the minimum energy consumption and low costs required for an industrial application for sustainability. Metal-Organic Framework (MOF) has a reasonably high CO2 adsorption capability. It has been applied as an adsorbent for capturing and storing CO2.
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23

Senevirathna, Hasanthi L., P. Vishakha T. Weerasinghe, Xu Li, Ming-Yan Tan, Sang-Sub Kim, and Ping Wu. "Counter-Intuitive Magneto-Water-Wetting Effect to CO2 Adsorption at Room Temperature Using MgO/Mg(OH)2 Nanocomposites." Materials 15, no. 3 (2022): 983. http://dx.doi.org/10.3390/ma15030983.

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MgO/Mg(OH)2-based materials have been intensively explored for CO2 adsorption due to their high theoretical but low practical CO2 capture efficiency. Our previous study on the effect of H2O wetting on CO2 adsorption in MgO/Mg(OH)2 nanostructures found that the presence of H2O molecules significantly increases (decreases) CO2 adsorption on the MgO (Mg(OH)2) surface. Furthermore, the magneto-water-wetting technique is used to improve the CO2 capture efficiency of various nanofluids by increasing the mass transfer efficiency of nanobeads. However, the influence of magneto-wetting to the CO2 adsor
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24

Su, Yiru, Siyao Liu, and Xuechao Gao. "Impact of Impure Gas on CO2 Capture from Flue Gas Using Carbon Nanotubes: A Molecular Simulation Study." Molecules 27, no. 5 (2022): 1627. http://dx.doi.org/10.3390/molecules27051627.

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We used a grand canonical Monte Carlo simulation to study the influence of impurities including water vapor, SO2, and O2 in the flue gas on the adsorption of CO2/N2 mixture in carbon nanotubes (CNTs) and carboxyl doped CNT arrays. In the presence of single impure gas, SO2 yielded the most inhibitions on CO2 adsorption, while the influence of water only occurred at low pressure limit (0.1 bar), where a one-dimensional chain of hydrogen-bonded molecules was formed. Further, O2 was found to hardly affect the adsorption and separation of CO2. With three impurities in flue gas, SO2 still played a m
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Hou, Dali, Fengming Gong, Hongming Tang, Jianchun Guo, Xianyu Qiang, and Lei Sun. "Molecule Simulation of CH4/CO2 Competitive Adsorption and CO2 Storage in Shale Montmorillonite." Atmosphere 13, no. 10 (2022): 1565. http://dx.doi.org/10.3390/atmos13101565.

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The main source of production in the middle and late stages of shale gas extraction is the adsorbed gas in shale, and the adsorbed gas in shale mainly comes from organic matter casein and clay minerals in shale; therefore, this paper uses sodium-based montmorillonite to characterize the clay minerals in shale and study the CH4 adsorption law in clay minerals, and this study has certain guiding significance for shale gas extraction. In addition, this paper also conducts a study on the competitive adsorption law of CH4 and CO2, and at the same time, predicts the theoretical sequestration of CO2
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Pang, Yu, Shengnan Chen, and Hai Wang. "Predicting Adsorption of Methane and Carbon Dioxide Mixture in Shale Using Simplified Local-Density Model: Implications for Enhanced Gas Recovery and Carbon Dioxide Sequestration." Energies 15, no. 7 (2022): 2548. http://dx.doi.org/10.3390/en15072548.

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Carbon dioxide (CO2) capture and storage have attracted global focus because CO2 emissions are responsible for global warming. Recently, injecting CO2 into shale gas reservoirs is regarded as a promising technique to enhance shale gas (i.e., methane (CH4)) production while permanently storing CO2 underground. This study aims to develop a calculation workflow, which is built on the simplified local-density (SLD) model, to predict excess and absolute adsorption isotherms of gas mixture based on single-component adsorption data. Such a calculation workflow was validated by comparing the measured
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27

Rodriguez Acevedo, Elizabeth, Farid B. Cortés, Camilo A. Franco, et al. "An Enhanced Carbon Capture and Storage Process (e-CCS) Applied to Shallow Reservoirs Using Nanofluids Based on Nitrogen-Rich Carbon Nanospheres." Materials 12, no. 13 (2019): 2088. http://dx.doi.org/10.3390/ma12132088.

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The implementation of carbon capture and storage process (CCS) has been unsuccessful to date, mainly due to the technical issues and high costs associated with two main stages: (1) CO2 separation from flue gas and (2) CO2 injection in deep geological deposits, more than 300 m, where CO2 is in supercritical conditions. This study proposes, for the first time, an enhanced CCS process (e-CCS), in which the stage of CO2 separation is removed and the flue gas is injected directly in shallow reservoirs located at less than 300 m, where the adsorptive phenomena control CO2 storage. Nitrogen-rich carb
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28

Wang, Meng, Weidong Xie, Xuguang Dai, and Kai Huang. "Carbon Dioxide (CO2) Adsorption Behaviour and Its Relationship with Nano-Structure in an Organic-Rich Shale: A Case Study of the Longmaxi Shale in Southeast Chongqing." Journal of Nanoscience and Nanotechnology 21, no. 1 (2021): 362–70. http://dx.doi.org/10.1166/jnn.2021.18450.

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Carbon capture and storage (CCS) technologies in shale reservoirs have attracted increasing interest in recent years. To study the CO2 adsorption behaviour in the Longmaxi shale, isothermal adsorption experiments, scanning electron microscopy (SEM) and other techniques were employed in this study. The results show that when the pressure is less than 7.37 MPa, the Langmuir model fits well with the experimental CO2 adsorption data in the shale. In contrast, when the pressure is greater than 7.37 MPa, the D+R-K model fits better with the experimental data. From low pressure to high pressure (>
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29

Chávez-Rocha, Rogelio, Itzel Mercado-Sánchez, Ismael Vargas-Rodriguez, et al. "Modeling Adsorption of CO2 in Rutile Metallic Oxide Surfaces: Implications in CO2 Catalysis." Molecules 28, no. 4 (2023): 1776. http://dx.doi.org/10.3390/molecules28041776.

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CO2 is the most abundant greenhouse gas, and for this reason, it is the main target for finding solutions to climatic change. A strategy of environmental remediation is the transformation of CO2 to an aggregated value product to generate a carbon-neutral cycle. CO2 reduction is a great challenge because of the large C=O dissociation energy, ~179 kcal/mol. Heterogeneous photocatalysis is a strategy to address this issue, where the adsorption process is the fundamental step. The focus of this work is the role of adsorption in CO2 reduction by means of modeling the CO2 adsorption in rutile metall
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30

Hafeez, Sarah, X. Fan, and Arshad Hussain. "A Kinetic Study of CO2 Adsorption in Cellulose Acetate Membranes." International Journal of Environmental Science and Development 6, no. 10 (2015): 755–59. http://dx.doi.org/10.7763/ijesd.2015.v6.694.

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Hakim, Azizul, Tengku Sharifah Marliza, Maratun Najiha Abu Tahari, Muhammad Rahimi Yusop, Mohamed Wahab Mohamed Hisham та Mohd Ambar Yarmo. "Development of α-Fe2O3 as Adsorbent and its Effect on CO2 Capture". Materials Science Forum 840 (січень 2016): 421–26. http://dx.doi.org/10.4028/www.scientific.net/msf.840.421.

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Iron oxide (α-Fe2O3) as adsorbent was no longer new in CO2 adsorption studies. However, its contributions in the industry still in limited wherein lack of convincing results of quantifying of adsorbed CO2. This work presents an analysis for α-Fe2O3 was prepared by simple mixing method with identified the adsorption capacity that applied in CO2 capture. The synthesized α-Fe2O3 from different concentrations of precursor were analyzed using XRD, N2 adsorption-desorption isotherms with BET and BJH method, TEM, FTIR, CO2 adsorption at 298 K, CO2-TPD and TGA-DTG. It was noted that 2M concentration o
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Wang, Qining, Quanwang Yan, Yu Zhao, Jie Ren, and Ning Ai. "Preparation of Amine-Modified Cu-Mg-Al LDH Composite Photocatalyst." Nanomaterials 12, no. 1 (2021): 127. http://dx.doi.org/10.3390/nano12010127.

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Cu-Mg-Al layered double hydroxides (LDHs) with amine modification were prepared by an organic combination of an anionic surfactant-mediated method and an ultrasonic spalling method using N-aminoethyl-γ-aminopropyltrimethoxysilane as a grafting agent. The materials were characterized by elemental analysis, XRD, SEM, FTIR, TGA, and XPS. The effects of the Cu2+ content on the surface morphology and the CO2 adsorption of Cu-Mg-Al LDHs were investigated, and the kinetics of the CO2 adsorption and the photocatalytic reduction of CO2 were further analyzed. The results indicated that the amine-modifie
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33

M. Yusof, S., and L. P. Teh. "Bifunctional Materials for CO₂ Adsorption: Short Review." Journal of Chemical Engineering and Industrial Biotechnology 7, no. 2 (2021): 15–19. http://dx.doi.org/10.15282/jceib.v7i2.7021.

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In recent years, there has been growing interest in adsorbents with high surface area, high porosity, high stability and high selectivity for CO2 adsorption. By the incorporation of the additive on the supports such as zeolite, silica, and carbon, the physicochemical properties of the adsorbent and CO2 adsorption performance can be enhanced. In this review, we focus on the overview of bifunctional materials (BFMs) for CO2 adsorption. The findings of this study suggests that the high surface area and high porosity of the support provide a good medium for high dispersion and accessibility of add
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34

Marganovici, Marko, Bianca Maranescu, Aurelia Visa, et al. "Hybrid Coordination Networks for Removal of Pollutants from Wastewater." International Journal of Molecular Sciences 23, no. 20 (2022): 12611. http://dx.doi.org/10.3390/ijms232012611.

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The adsorption properties of two coordination polymers, resulting from the reaction of divalent metal (Ca2+ or Co2+) salts with (2-carboxyethyl)(phenyl)phosphinic acid, are presented in this paper. The structural and textural characterization before and after adsorption experiments is presented. The adsorbent materials were prepared using the hydrothermal procedure. The compound Ca[O2P(CH2CH2COOH)(C6H5)]2 (CaCEPPA) has a layered topology, with the phenyl groups oriented into the interlayer space and crystallizes in the monoclinic system. Compound Co2[(O2P(CH2CH2COO)(C6H5)(H2O)]2·2H2O (CoCEPPA)
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35

Pornaroontham, Phuwadej, Gasidit Panomsuwan, Sangwoo Chae, et al. "Nitriding an Oxygen-Doped Nanocarbonaceous Sorbent Synthesized via Solution Plasma Process for Improving CO2 Adsorption Capacity." Nanomaterials 9, no. 12 (2019): 1776. http://dx.doi.org/10.3390/nano9121776.

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The synthesis of carbon nanoparticles (Cn) and oxygen-doped nanocarbon (OCn) was successfully done through a one-step synthesis by the solution plasma process (SPP). The Cn and OCn were nitrogen-doped by nitridation under an ammonia atmosphere at 800 °C for 2 h to yield NCn and NOCn, respectively, for carbon dioxide (CO2) adsorption. The NOCn exhibited the highest specific surface area (~570 m2 g−1) and highest CO2 adsorption capacity (1.63 mmol g−1 at 25 °C) among the synthesized samples. The primary nitrogen species on the surface of NOCn were pyridinic-N and pyrrolic-N. The synergistic effe
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36

Kiełbasa, Karolina, Şahin Bayar, Esin Apaydin Varol, et al. "Carbon Dioxide Adsorption over Activated Carbons Produced from Molasses Using H2SO4, H3PO4, HCl, NaOH, and KOH as Activating Agents." Molecules 27, no. 21 (2022): 7467. http://dx.doi.org/10.3390/molecules27217467.

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Cost-effective activated carbons for CO2 adsorption were developed from molasses using H2SO4, H3PO4, HCl, NaOH, and KOH as activating agents. At the temperature of 0 °C and a pressure of 1 bar, CO2 adsorption equal to 5.18 mmol/g was achieved over activated carbon obtained by KOH activation. The excellent CO2 adsorption of M-KOH can be attributed to its high microporosity. However, activated carbon prepared using HCl showed quite high CO2 adsorption while having very low microporosity. The absence of acid species on the surface promotes CO2 adsorption over M-HCl. The pore size ranges that are
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37

Li, Yao, Shiying Wang, Binbin Wang, Yan Wang, and Jianping Wei. "Sustainable Biomass Glucose-Derived Porous Carbon Spheres with High Nitrogen Doping: As a Promising Adsorbent for CO2/CH4/N2 Adsorptive Separation." Nanomaterials 10, no. 1 (2020): 174. http://dx.doi.org/10.3390/nano10010174.

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Separation of CO2/CH4/N2 is significantly important from the view of environmental protection and energy utilization. In this work, we reported nitrogen (N)-doped porous carbon spheres prepared from sustainable biomass glucose via hydrothermal carbonization, CO2 activation, and urea treatment. The optimal carbon sample exhibited a high CO2 and CH4 capacity, as well as a low N2 uptake, under ambient conditions. The excellent selectivities toward CO2/N2, CO2/CH4, and CH4/N2 binary mixtures were predicted by ideal adsorbed solution theory (IAST) via correlating pure component adsorption isotherms
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38

Deng, Jia, Qi Zhang, Jiujiu He, Guangjie Zhao, Fuquan Song, and Hongqing Song. "Effects of competitive adsorption on production capacity during CO2 displacement of CH4 in shale." Physics of Fluids 34, no. 11 (2022): 116104. http://dx.doi.org/10.1063/5.0122802.

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During CO2 displacement of CH4 in shale, competitive adsorption results in reduced pore space used for gas flow in shale, which is closely associated with the production capacity of shale-gas reservoirs. Thus, the present work investigates the effects of CO2–CH4 competitive adsorption on production capacity. Herein, a slit–pore model is developed in terms of gas storage (CO2 and CH4) and graphene pores using molecular dynamics and implemented via large-scale atomic/molecular massively parallel simulator. The effects of CO2 injection pressure, temperature, and velocity and of pore size on CO2–C
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39

Yuan, Shan, Hong-Ze Gang, Yi-Fan Liu, et al. "Adsorption and Diffusion Behaviors of CO2 and CH4 Mixtures in Different Types of Kerogens and Their Roles in Enhanced Energy Recovery." Sustainability 14, no. 22 (2022): 14949. http://dx.doi.org/10.3390/su142214949.

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CO2 geological sequestration in subsurface shale formations is a promising strategy to store CO2 and to increase shale gas production. The understanding of gas adsorption and diffusion mechanisms in microporous media is critical for CO2 storage-enhanced gas recovery (CS-EGR). The type of kerogens is one of the important factors that influence the adsorption and diffusion behaviors of gases. In this work, the Grand Canonical Monte Carlo and Molecular Dynamics simulations were utilized to develop kerogen models and further investigate gas and water adsorption and diffusion behavior on the type I
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40

Faisal, Muhamad, Afif Zulfikar Pamungkas, and Yuni Krisyuningsih Krisnandi. "Study of Amine Functionalized Mesoporous Carbon as CO2 Storage Materials." Processes 9, no. 3 (2021): 456. http://dx.doi.org/10.3390/pr9030456.

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Carbon sequestration via the carbon capture and storage (CCS) method is one of the most useful methods of lowering CO2 emissions in the atmosphere. Ethylenediamine (EDA)- and triethylenetetramine (TETA)-modified mesoporous carbon (MC) has been successfully prepared as a CO2 storage material. The effect of various concentrations of EDA or TETA added to MC, as well as activated carbon (AC), on their CO2 adsorption capacity were investigated using high-purity CO2 as a feed and a titration method to quantitatively measure the amount of adsorbed CO2. The results showed that within 60 min adsorption
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41

Essouradjane, Dr I., Jaya Ruse J, and Vijaya Subineetha P. "CO2 Emission Control Using Selective Oxidation of Catalytic Zeolite13x." International Journal for Research in Applied Science and Engineering Technology 10, no. 12 (2022): 660–63. http://dx.doi.org/10.22214/ijraset.2022.47980.

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Abstract: For this research, Zeolite 13 x was prepared under high pressure with a mixture of activated charcoal and Natural coconut residue. The isotherms of adsorption and Kinetic curves of the Co2 on the prepared adsorbent materials are measured at 328k, 318 k, 308 k, and 298 K and using the gravimetric adsorption method, and with a pressure range of 0–30 bar[1]. Separately, the mass transfer constants and adsorption activation energy Ea of CO2 on the adsorbents were calculated. The results showed that the amount of CO2 adsorbed on the zeolite 13X was greater. The linear driving force (LDF)
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42

Dubskikh, Vadim A., Konstantin A. Kovalenko, Anton S. Nizovtsev, et al. "Enhanced Adsorption Selectivity of Carbon Dioxide and Ethane on Porous Metal–Organic Framework Functionalized by a Sulfur-Rich Heterocycle." Nanomaterials 12, no. 23 (2022): 4281. http://dx.doi.org/10.3390/nano12234281.

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Porous metal–organic framework [Zn2(ttdc)2(bpy)] (1) based on thieno[3,2‑b]thiophenedicarboxylate (ttdc) was synthesized and characterized. The structure contains intersected zig-zag channels with an average aperture of 4 × 6 Å and a 49% (v/v) guest-accessible pore volume. Gas adsorption studies confirmed the microporous nature of 1 with a specific surface area (BET model) of 952 m2·g–1 and a pore volume of 0.37 cm3·g–1. Extensive CO2, N2, O2, CO, CH4, C2H2, C2H4 and C2H6 gas adsorption experiments at 273 K and 298 K were carried out, which revealed the great adsorption selectivity of C2H6 ove
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43

Lin, Cheng, Hui Yun Zhang, Xiao Ying Lin, and Yun Fei Feng. "Adsorption CO2 on Activated Carbon with Surface Modification." Advanced Materials Research 634-638 (January 2013): 746–50. http://dx.doi.org/10.4028/www.scientific.net/amr.634-638.746.

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The success of CO2 capture from flue gas with solid sorbent is dependent of a low cost sorbent with high CO2 adsorption capacity and selectivity. Modifying surface texture of activated carbon with impregnating amines is expected to offer the benefits of liquid amines in the typical adsorption process routes. In this work, cocoanut activate carbon (AC) is firstly alkalified by KOH solution, then modified by impregnation of tetraethylenepentamine (TEPA), triethylenetetramine (TATA), and triethanolamine (TEA) to form a new type of sorbents. The effects of alkalifying treatment and temperature on
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44

Diyuk, Vitaly E., Alexander N. Zaderko, Liudmyla M. Grischenko, et al. "CO2 adsorption on pristine, oxidized, and diethylamine-functionalized activated carbon sorbents." E3S Web of Conferences 154 (2020): 07001. http://dx.doi.org/10.1051/e3sconf/202015407001.

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Adsorption is currently the most promising capture technology to shorten atmospheric emissions of carbon dioxide (CO2). In this article, we report on the adsorption of CO2 onto pristine, oxidized, and aminated activated carbon (AC) sorbents. From our findings, some functionalized AC sorbents have shown very promising results in the CO2 capture process. Their maximum adsorption capacity measured by the thermogravimetric method at 20 °C varies between 2.2 and 3.9 mmol CO2/g depending on the content of diethylamino and oxygen-containing groups. The functionalization of the carbon surface with die
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45

Damasceno Borges, Daiane, and Douglas S. Galvao. "Schwarzites for Natural Gas Storage: A Grand-Canonical Monte Carlo Study." MRS Advances 3, no. 1-2 (2018): 115–20. http://dx.doi.org/10.1557/adv.2018.190.

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ABSTRACTThe 3D porous carbon-based structures called Schwarzites have been recently a subject of renewed interest due to the possibility of being synthesized in the near future. These structures exhibit negatively curvature topologies with tuneable porous sizes and shapes, which make them natural candidates for applications such as CO2 capture, gas storage and separation. Nevertheless, the adsorption properties of these materials have not been fully investigated. Following this motivation, we have carried out Grand-Canonical Monte Carlo simulations to study the adsorption of small molecules su
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46

Cen, Qi Gang, Meng Xiang Fang, Jia Ping Xu, and Zhong Yang Luo. "Experimental Study of Breakthrough Adsorption on Activated Carbon for CO2 Capture." Advanced Materials Research 356-360 (October 2011): 1139–44. http://dx.doi.org/10.4028/www.scientific.net/amr.356-360.1139.

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In this study, a commercial activated carbon was assessed as adsorbent for post-combustion CO2 capture. The breakthrough adsorption experiments were conducted in a fixed-bed column with simulated flue gas of 12% CO2. The effects of feed flow rate and adsorption pressure on breakthrough time and CO2 adsorption capacity were evaluated. The column efficiency was introduced to estimate the percentage of the utilization of the bed adsorbent capacity. At a higher flow rate, the breakthrough time, breakthrough capacity and column efficiency decreased. Conversely, increasing adsorption pressure was fa
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47

Marliza, Tengku Sharifah, Mohd Ambar Yarmo, Azizul Hakim, Maratun Najiha Abu Tahari, and Yun Hin Taufiq-Yap. "Characterizations and Application of Supported Ionic Liquid [bmim][CF3SO3]/SiO2 in CO2 Capture." Materials Science Forum 888 (March 2017): 485–90. http://dx.doi.org/10.4028/www.scientific.net/msf.888.485.

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Supported ionic liquid (IL) [bmim][CF3SO3] on SiO2 was prepared, characterized and its potential evaluated for CO2 capture via adsorption and desorption studies using gas adsorption analyzer. The physical and chemical properties were determined using N2 adsorption/desorption and CO2-TPD analysis. The increasing IL loading caused a drastic decrease in the surface area as well as pore volume due to the confinement of IL within the micropore and mesopore area. However, the increasing IL loading increased the basicity of the sorbent which significantly enhanced CO2 chemisorption. Supported [bmim][
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48

Chi, Yuan, Changzhong Zhao, Junchen Lv, Jiafei Zhao, and Yi Zhang. "Thermodynamics and Kinetics of CO2/CH4 Adsorption on Shale from China: Measurements and Modeling." Energies 12, no. 6 (2019): 978. http://dx.doi.org/10.3390/en12060978.

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CO2-enhanced shale gas recovery (CO2-ESGR) sequestrates anthropogenic CO2 and improves the profitability of shale gas exploitation. This work investigated the adsorption behaviors of CO2 and CH4 on shale from China at 20, 40, 60 and 80 °C. The pressure ranges for CO2 and CH4 were 1–5 and 1–15 MPa, respectively. The excess adsorbed amount of CH4 increased with increasing pressure from the beginning to the end, while the maximum excess CO2 adsorption was observed at approximately 4 MPa. The absolute average deviations (AADs) of CO2 and CH4, determined by the Langmuir + k model, were 2.12–3.10% a
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49

Zhang, Zhijuan, Pengwei Li, Ting Zhao, and Yuanhan Xia. "Enhanced CO2 Adsorption and Selectivity of CO2/N2 on Amine@ZIF-8 Materials." Adsorption Science & Technology 2022 (February 17, 2022): 1–12. http://dx.doi.org/10.1155/2022/3207986.

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The ZIF-8 crystals were successfully postsynthetically modified using methylamine (MA), ethylenediamine (ED), and N, N ′ -dimethylethylenediamine (MMEN) to improve their adsorption performance toward CO2. Results showed that, compared with the original ZIF-8, the BET specific surface area of MA-ZIF-8, MMEN-ZIF-8, and ED-ZIF-8 has increased by 118.2%, 92.0%, and 29.8%, respectively. In addition, their total pore volume increased separately by 130.8%, 100%, and 48.7%. The adsorption capacities of CO2 on the amine-modified ZIF-8 samples followed the order MA − ZIF − 8 > MMEN − ZIF − 8 > ED
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50

Jingyi Shan, Jingyi Shan, Xiangling Wang Xiangling Wang, Junkai Wang Junkai Wang, Shixuan Zhang Shixuan Zhang, and Qianku Hu and Aiguo Zhou Qianku Hu and Aiguo Zhou. "Electric Field Controlled Separation and Capture of CO2 over S-Doped Graphene: A First-Principles Calculation." Journal of the chemical society of pakistan 43, no. 6 (2021): 623. http://dx.doi.org/10.52568/000964/jcsp/43.06.2021.

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The selective adsorption and capture of CO2 from post-combustion gases carries huge significance for the reduction of greenhouse effect. In this research, the computations of density functional are performed to investigate the CO2 selective adsorption of S-doped graphene in thrall to applied electric field (E-F). Introducing the applied E-F, the adsorption between S-doped graphene and CO2 is strong chemisorption, and CO2 can be effectively captured. Removing the applied E-F, the adsorption restores to physisorption and CO2 is easily desorbed. Therefore, the CO2 seize and clearing can be realiz
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