Log in

Relevant bibliographies by topics / Microporous/mesoporous material / Journal articles

To see the other types of publications on this topic, follow the link: Microporous/mesoporous material.

Journal articles on the topic 'Microporous/mesoporous material'

Author: Grafiati

Published: 21 February 2023

Create a spot-on reference in APA, MLA, Chicago, Harvard, and other styles

Select a source type:

Consult the top 50 journal articles for your research on the topic 'Microporous/mesoporous material.'

Next to every source in the list of references, there is an 'Add to bibliography' button. Press on it, and we will generate automatically the bibliographic reference to the chosen work in the citation style you need: APA, MLA, Harvard, Chicago, Vancouver, etc.

You can also download the full text of the academic publication as pdf and read online its abstract whenever available in the metadata.

Browse journal articles on a wide variety of disciplines and organise your bibliography correctly.

1

Zi, Guo Li, Fei Yu, Fa Gui Yuan, et al. "Cerium-Doped Microporous-Mesoporous Silica Composite: Synthesis, Characterization, and Ammonia Adsorption." Advanced Materials Research 742 (August 2013): 452–55. http://dx.doi.org/10.4028/www.scientific.net/amr.742.452.

Full text

Abstract:

Cerium-doped microporous-mesoporous composite material (Ce-M-M) was synthesized by the hydrothermal method. Ce-M-M was characterized by N2adsorption-desorption and FT-IR. The results showed that the Ce-M-M has composite pore structure combining both micropores and mesopores, and the pore sizes are mainly located at 1.7 nm, 2.3nm and 2.7nm. The specific surface area of the Ce-M-M was 1288 m2g-1with a pore volume of 0.66 cc/g. In addition, NH3, a harmful component in cigarette mainstream smoke could be effectively reduced 66.9% by using Ce-M-M as an adsorbent.

APA, Harvard, Vancouver, ISO, and other styles

2

Prokešová, Pavla, Nikolay Petkov, Jiří Čejka, Svetlana Mintova, and Thomas Bein. "Micro/Mesoporous Composites Based on Colloidal Zeolite Grown in Mesoporous Matrix." Collection of Czechoslovak Chemical Communications 70, no. 11 (2005): 1829–47. http://dx.doi.org/10.1135/cccc20051829.

Full text

Abstract:

Composite materials containing micro- and mesopores are prepared under instantaneous hydrothermal treatment of initial solutions generally used for zeolite Beta and precursor solutions for mesoporous Al-MCM-41 material. The resulting composites are compared with pure, highly crystalline colloidal microporous Beta zeolite and hexagonally ordered mesostructured samples. The porosity and morphological features of the composite materials are influenced by the conditions of hydrothermal synthesis of the initial colloidal solutions used for the preparation of Beta seeds, as well as by the conditions

APA, Harvard, Vancouver, ISO, and other styles

3

Gimblett, F. G. R., and A. Hussain. "The Origin of Porosity in Hydrous Zirconia Gels. III. Sodium Hydroxide as a Precipitant." Adsorption Science & Technology 5, no. 3 (1988): 229–38. http://dx.doi.org/10.1177/026361748800500305.

Full text

Abstract:

When used as precipitants for the preparation of hydrous zirconia gels, aqueous NaOH solutions generate materials whose porosities are strongly dependent on their outgassing temperatures. Microporous solids exhibiting high apparent BET-nitrogen surface areas, and possessing considerable proportions of primary (narrow) micropores, are obtained at lower outgassing temperatures (<250°C). Thermal treatment above this temperature leads to the generation of mesoporous materials exhibiting little or no micropore volume. It is suggested that the ready removal of loosely-bound or absorbed water from

APA, Harvard, Vancouver, ISO, and other styles

4

Dziuba, M., L. Mushinskii, R. Brovko, and V. Doluda. "Surface Characterization of Zn-modified H-ZSM-5 Zeolites." Bulletin of Science and Practice 6, no. 6 (2020): 48–54. http://dx.doi.org/10.33619/2414-2948/55/06.

Full text

Abstract:

The surface properties of microporous aluminosilicates are of primary importance in chemical technology and catalysis. The determination of the surface area, pore volume, and pore size and size distribution for microporous aluminosilicates is a complex scientific and technical problem related to both accurate measurements and the correct choice of a mathematical model that adequately describes the physicochemical processes occurring on the test surface. Currently, t-plot, as-plot, Dubinin-Radushkevich model, Dillimore model and Horvath-Kawazoe model are frequently used, each of which has certa

APA, Harvard, Vancouver, ISO, and other styles

5

Qu, Qunting, Jiaojiao Yun, Zhongming Wan, et al. "MOF-derived microporous carbon as a better choice for Na-ion batteries than mesoporous CMK-3." RSC Adv. 4, no. 110 (2014): 64692–97. http://dx.doi.org/10.1039/c4ra11009a.

Full text

APA, Harvard, Vancouver, ISO, and other styles

6

Han, Guodong, Xin Wang, Jia Yao, Mi Zhang, and Juan Wang. "The Application of Indium Oxide@CPM-5-C-600 Composite Material Derived from MOF in Cathode Material of Lithium Sulfur Batteries." Nanomaterials 10, no. 1 (2020): 177. http://dx.doi.org/10.3390/nano10010177.

Full text

Abstract:

Due to the “shuttle effect”, the cycle performance of lithium sulfur (Li-S) battery is poor and the capacity decays rapidly. Replacing lithium-ion battery is the maximum problem to be overcome. In order to solve this problem, we use a cage like microporous MOF(CPM-5) as a carbon source, which is carbonized at high temperature to get a micro-mesoporous carbon composite material. In addition, indium oxide particles formed during carbonization are deposited on CPM-5 structure, forming a simple core-shell structure CPM-5-C-600. When it is used as the cathode of Li-S battery, the small molecule sul

APA, Harvard, Vancouver, ISO, and other styles

7

Kim, Ju-Hwan, Hye-Min Lee, Sang-Chul Jung, Dong-Chul Chung, and Byung-Joo Kim. "Bamboo-Based Mesoporous Activated Carbon for High-Power-Density Electric Double-Layer Capacitors." Nanomaterials 11, no. 10 (2021): 2750. http://dx.doi.org/10.3390/nano11102750.

Full text

Abstract:

Demand for hybrid energy storage systems is growing, but electric double-layer capacitors (EDLCs) have insufficient output characteristics because of the microporous structure of the activated carbon electrode material. Commercially, activated carbon is prepared from coconut shells, which yield an activated carbon material (YP-50F) rich in micropores, whereas mesopores are desired in EDLCs. In this study, we prepared mesoporous activated carbon (PB-AC) using a readily available, environmentally friendly resource: bamboo. Crucially, modification using phosphoric acid and steam activation was ca

APA, Harvard, Vancouver, ISO, and other styles

8

Lázár, Károly. "Redistribution of iron ions in porous ferrisilicates during redox treatments." Pure and Applied Chemistry 89, no. 4 (2017): 471–79. http://dx.doi.org/10.1515/pac-2016-1026.

Full text

Abstract:

Abstract Relocation of iron ions in microporous Fe-FER, (Al+Fe)-FER, Fe-MFI (FER: ferrierite, MFI: silicalite) and in mesoporous Fe-MCM-41 ferrisilicate (MCM: Mobile Crystalline Material) samples was followed during redox treatments primarily by tool of the in situ Mössbauer spectroscopy. Coexistence of various Fe3+ and Fe2+ species is demonstrated. In microporous Fe-FER and Fe-MFI existence of combined μ-oxo iron dimers, Fe3+FW-O-Fe2+EFW can be proposed. The presence of these dimers can easily be correlated with catalytic effect shown in certain oxidation processes. Structural rearrangement c

APA, Harvard, Vancouver, ISO, and other styles

9

Sakthivel, Ayyamperumal, Shing-Jong Huang, Hsiu-Lan Yen, Pei-Hao Wu, Chia-Liang Cheng, and Shang-Bin Liu. "Replication of Bimodal Porous Carbon Material from Mesoporous/Microporous Aluminosilicate Composite." Nanoscience and Nanotechnology Letters 3, no. 6 (2011): 788–93. http://dx.doi.org/10.1166/nnl.2011.1270.

Full text

APA, Harvard, Vancouver, ISO, and other styles

10

Fang, Xiangpeng, Xiqian Yu, Saifen Liao, et al. "Corrigendum to “Lithium storage performance in ordered mesoporous MoS2 electrode material” [Microporous and Mesoporous Materials 151 (2012) 418–423]." Microporous and Mesoporous Materials 196 (September 2014): 359. http://dx.doi.org/10.1016/j.micromeso.2013.08.019.

Full text

APA, Harvard, Vancouver, ISO, and other styles

11

Harold, M. P., C. Lee, A. J. Burggraaf, K. Keizer, V. T. Zaspalis, and R. S. A. de Lange. "Catalysis with Inorganic Membranes." MRS Bulletin 19, no. 4 (1994): 34–39. http://dx.doi.org/10.1557/s088376940003949x.

Full text

Abstract:

Catalytic inorganic membranes are among the most challenging and intriguing porous materials. Consisting of a thin film of mesoporous or microporous inorganic material deposited on a macroporous material, catalytic membranes are multifunctional materials that must be engineered for both chemical and physical properties. New approaches to carrying out chemical reactions are possible by tailoring the membrane catalytic activity and selectivity, permselectivity, and other thin film properties. Readers are referred to several recent reviews of inorganic membranes, in particular, Zaspalis and Burgg

APA, Harvard, Vancouver, ISO, and other styles

12

Solberg, Sean M., Dharmesh Kumar, and Christopher C. Landry. "Synthesis, Structure, and Reactivity of a New Ti-Containing Microporous/Mesoporous Material." Journal of Physical Chemistry B 109, no. 51 (2005): 24331–37. http://dx.doi.org/10.1021/jp054187y.

Full text

APA, Harvard, Vancouver, ISO, and other styles

13

Poladi, Raja H. P. R., and Christopher C. Landry. "Synthesis, Characterization, and Catalytic Properties of a Microporous/Mesoporous Material, MMM-1." Journal of Solid State Chemistry 167, no. 2 (2002): 363–69. http://dx.doi.org/10.1006/jssc.2002.9546.

Full text

APA, Harvard, Vancouver, ISO, and other styles

14

McCusker, L. B., F. Liebau, and G. Engelhardt. "Nomenclature of structural and compositional characteristics of ordered microporous and mesoporous materials with inorganic hosts(IUPAC Recommendations 2001)." Pure and Applied Chemistry 73, no. 2 (2001): 381–94. http://dx.doi.org/10.1351/pac200173020381.

Full text

Abstract:

A system of terms applicable to ordered microporous and mesoporous materials is proposed, and rules for writing a standardized crystal chemical formula for such materials are presented. The recommendations are based both on common usage and on a systematic classification scheme. The nomenclature has been developed to encompass all inorganic materials with ordered, accessible pores with free diameters of less than 50 nm. The crystal chemical formula describes the chemical composition of both the guest species and the host, the structure of the host, the structure of the pore system, and the sym

APA, Harvard, Vancouver, ISO, and other styles

15

Li, Yongfeng, Jiaojiao Su, Guiping Li, and Xiufeng Meng. "Facile Synthesis of Super-Microporous Titania–Alumina with Tailored Framework Properties." Materials 13, no. 5 (2020): 1126. http://dx.doi.org/10.3390/ma13051126.

Full text

Abstract:

Super-microporous material (pore size 1–2 nm) can bridge the pore size gap between the zeolites (<1 nm) and the mesoporous oxides (>2 nm). A series of super-microporous titania–alumina materials has been successfully prepared via a facile one-pot evaporation-induced self-assembly (EISA) strategy by different solvents using fatty alcohol polyoxyethylene ether (AEO-7) as the template. Moreover, no extra acid or base is added in our synthesis process. When titanium isopropylate is used as the titanium source, these materials exhibit high BET surface areas (from 275 to 396 m2/g) and pore vol

APA, Harvard, Vancouver, ISO, and other styles

16

Zhao, Zhi-hong, Ming-hui Zhang, Wen-Jing Liu, and Quan-teng Li. "Measurement of pore sized microporous-mesoporous materials by time-domain nuclear magnetic resonance." BioResources 15, no. 1 (2020): 1407–18. http://dx.doi.org/10.15376/biores.15.1.1407-1418.

Full text

Abstract:

Time-domain nuclear magnetic resonance (TD NMR) technology has been used for pore detection in porous materials for a long time, but there are few pore detection methods for microporous-mesoporous materials. The surface of different materials is obtained by pore detection of known pore materials. Relaxation rate, which obtains aperture information, has an important practical significance for the application of time-domain NMR technology in the characterization of porous materials. In this study, the T2 peaks of pores of known pore size materials, namely zeolite molecular sieves (0.3 nm and 1 n

APA, Harvard, Vancouver, ISO, and other styles

17

Kang, Hui-Ju, Gazi A. K. M. Rafiqul Bari, Tae-Gyu Lee, et al. "Microporous Carbon Nanoparticles for Lithium–Sulfur Batteries." Nanomaterials 10, no. 10 (2020): 2012. http://dx.doi.org/10.3390/nano10102012.

Full text

Abstract:

Rechargeable lithium–sulfur batteries (LSBs) are emerging as some of the most promising next-generation battery alternatives to state-of-the-art lithium-ion batteries (LIBs) due to their high gravimetric energy density, being inexpensive, and having an abundance of elemental sulfur (S8). However, one main, well-known drawback of LSBs is the so-called polysulfide shuttling, where the polysulfide dissolves into organic electrolytes from sulfur host materials. Numerous studies have shown the ability of porous carbon as a sulfur host material. Porous carbon can significantly impede polysulfide shu

APA, Harvard, Vancouver, ISO, and other styles

18

Hartati, Hartati, Didik Prasetyoko, and Mardi Santoso. "Cyclic Acetalization of Furfural on Porous Aluminosilicate Acid Catalysts." Indonesian Journal of Chemistry 16, no. 3 (2018): 289. http://dx.doi.org/10.22146/ijc.21144.

Full text

Abstract:

Porous aluminosilicate materials included microporous and mesoporous ZSM-5, hierarchical aluminosilicates, and mesoporous aluminosilicate were tested for acetalization of furfural (furan-2-carbaldehyde) with propylene glycol. The existing synthesis methods for aluminosilicate and ZSM-5 were modified to produce aluminosilicate material with hierarchical porous structure. Catalytic activity in acetalization of furfural by propylene glycol were conducted by refluxed of the mixture of furfural, propylene glycol and catalyst, using toluene as solvent and nitrobenzene as internal standard, at 106 °C

APA, Harvard, Vancouver, ISO, and other styles

19

Sidorov, A., V. Molchanov, L. Mushinskii, and R. Brovko. "Surface Characteristics Change of Zinc Modified H-ZSM-5 Zeolites in Methanol to Hydrocarbons Transformation Process." Bulletin of Science and Practice 6, no. 11 (2020): 23–30. http://dx.doi.org/10.33619/2414-2948/60/02.

Full text

Abstract:

The t-plot method is a well-known method for determining the volumes of micro- and/or mesoporous materials and the specific surface area of a sample by comparison with a reference adsorption isotherm of a non-porous material having a similar surface chemical composition. The article describes the applicability of the t-graph method to the analysis of the surface properties of zinc modified samples of zeolite H-ZSM-5 before and after the reactions of methanol transformation into hydrocarbons occur on them. Zeolites are widely used as catalysts in the petrochemical and refining industries. These

APA, Harvard, Vancouver, ISO, and other styles

20

Song, Ke, Jingqi Guan, Zhuqian Wang, Chen Xu, and Qiubin Kan. "Post-treatment of mesoporous material with high temperature for synthesis super-microporous materials with enhanced hydrothermal stability." Applied Surface Science 255, no. 11 (2009): 5843–46. http://dx.doi.org/10.1016/j.apsusc.2009.01.016.

Full text

APA, Harvard, Vancouver, ISO, and other styles

21

Ojeda-López, Reyna, Armando Domínguez-Ortiz, Carlos Felipe, A. Cervantes-Uribe, Isaac J. Pérez-Hermosillo, and J. Marcos Esparza-Schulz. "Isosteric Enthalpy Behavior of CO2 Adsorption on Micro-Mesoporous Materials: Carbon Microfibers (CMFs), SBA-15, and Amine-Functionalized SBA-15." Journal of Composites Science 5, no. 4 (2021): 102. http://dx.doi.org/10.3390/jcs5040102.

Full text

Abstract:

The isosteric enthalpy of adsorption (Δadsh˙) of CO2 in three different micro and mesoporous materials was evaluated in this work. These materials were a microporous material with functional groups of nitrogen and oxygen (CMFs, carbon microfibers), a mesoporous material with silanol groups (SBA-15, Santa Barbara Amorphous), and a mesoporous material with amine groups (SBA-15_APTES, SBA-15 amine-functionalized with (3-Aminopropyl)-triethoxysilane). The temperature interval explored was between 263 K and 303 K, with a separation of 5 K between each one, so a total of nine CO2 isotherms were obta

APA, Harvard, Vancouver, ISO, and other styles

22

Duan, Ai Jun, Hui Li Fan, Zhen Zhao, Gui Yuan Jiang, and Jian Liu. "Hydrodesulfurization Performances of NiMo Supported on Micro/Mesoporous Beta/MCM-48 Composite Catalyst." Advanced Materials Research 233-235 (May 2011): 827–32. http://dx.doi.org/10.4028/www.scientific.net/amr.233-235.827.

Full text

Abstract:

Using CTAB as the mesostructure directing agent, a novel micro/mesoporous composite material of Beta-MCM-48 was synthesized and self-assembled from nanocrystal Beta solutions by two-step hydrothermal method in this study. The typical physico-chemical properties of material were characterized by the techniques and measurements of BET surface area, pore volume, pore size, XRD and TEM. Based on the characterization results, it could be found that BM48 composite simultaneously possessed BEA microporous structure and cubic Ia3d mesoporous structure, and the degree of mesoporous order was comparably

APA, Harvard, Vancouver, ISO, and other styles

23

Sonwane, C. G., and Q. Li. "Molecular Simulation of RMM: Ordered Mesoporous SBA-15 Type Material Having Microporous ZSM-5 Walls." Journal of Physical Chemistry B 109, no. 38 (2005): 17993–97. http://dx.doi.org/10.1021/jp053360n.

Full text

APA, Harvard, Vancouver, ISO, and other styles

24

Rongchapo, Wina, Onsulang Sophiphun, Kamolwan Rintramee, Sanchai Prayoonpokarach, and Jatuporn Wittayakun. "Paraquat adsorption on porous materials synthesized from rice husk silica." Water Science and Technology 68, no. 4 (2013): 863–69. http://dx.doi.org/10.2166/wst.2013.311.

Full text

Abstract:

The goal of this work was to utilize rice husk silica (RHS) and porous materials synthesized with RHS, including mesoporous material (MCM-41) and microporous materials (zeolite NaY and NaBEA), for adsorption of herbicide paraquat. The adsorption occurred although cation exchange and the capacity decreased in the following order: NaY &gt; NaBEA &gt; MCM-41 &gt; RHS, consistent with the amount of Al. The adsorption on all adsorbents fitted well with the Langmuir model and the maximum adsorption capacity of 185.2 mg/g-adsorbent was obtained on NaY. In addition, blue dye in commercial

APA, Harvard, Vancouver, ISO, and other styles

25

NINNESS, BRIAN J., LUKE D. DOUCETTE, BEN MCCOOL, and CARL P. TRIPP. "DEVELOPMENT OF MATERIALS AND SAMPLING METHODS FOR IR-BASED DETECTION OF TOXIC COMPOUNDS IN WATER." International Journal of High Speed Electronics and Systems 17, no. 04 (2007): 697–708. http://dx.doi.org/10.1142/s0129156407004904.

Full text

Abstract:

A detection approach based on the principles of Fourier Transform Infrared Spectroscopy (FTIR) is presented for the trace level detection of toxic compounds in water. The main advantages of this approach are that it operates in heterogeneous aqueous environments, provides fast detection (< 10 min), and exhibits high sensitivity/selectivity to nonvolatile toxic materials with minimal false alarms. The key enablers to using FTIR for aqueous-based detection is the development of a selective and robust sampling protocol coupled to a miniaturized portable FTIR unit. The sampling approaches invol

APA, Harvard, Vancouver, ISO, and other styles

26

Blanford, Christopher F., and C. Barry Carter. "Electron Radiation Damage of MCM-41 and Related Materials." Microscopy and Microanalysis 9, no. 3 (2003): 245–63. http://dx.doi.org/10.1017/s1431927603030447.

Full text

Abstract:

The article compares the relative stability of MCM-41 and related mesoporous materials in electron beam at an accelerating voltage of 100–300 kV. The work encountered in electron microscopy presents a comparison with similar research that has been carried out on nonporous and microporous silicates, especially α-quartz and zeolite Y. The trends in stability are analyzed, classifying the effects of sample preparation, organic and inorganic moieties, and electron accelerating voltage on beam stability. A higher synthesis temperature, the use of an acid catalyst in the synthesis, and the presence

APA, Harvard, Vancouver, ISO, and other styles

27

Liu, Gui Yang, Jun Ming Guo, Bao Sen Wang, and Ying He. "A Porous Carbon Prepared by a Template Method Using a Clay Mineral as a Template." Advanced Materials Research 230-232 (May 2011): 1151–54. http://dx.doi.org/10.4028/www.scientific.net/amr.230-232.1151.

Full text

Abstract:

A porous carbon has been prepared by template method using a natural clay mineral as template and furfuralcohol as carbon source. X-ray diffraction (XRD), nitrogen adsorption and scanning electric microscope (SEM) are used to investigate the composition, structure of pore and micro morphology of the samples. XRD analysis indicates that the templated carbon is amorphous. Nitrogen adsorption analysis indicates that the carbon is a microporous and mesoporous material. The specific surface area of the carbon is 302m2/g, and the external surface area is 158m2/g. The mesoporosity of the carbon is as

APA, Harvard, Vancouver, ISO, and other styles

28

Iftitahiyah, Vita Nur, Didik Prasetyoko, Hadi Nur, Hasliza Bahruji, and Hartati Hartati. "Synthesis and characterization of zeolite NaX from Bangka Belitung Kaolin as alternative precursor." Malaysian Journal of Fundamental and Applied Sciences 14, no. 4 (2018): 414–18. http://dx.doi.org/10.11113/mjfas.v14n4.964.

Full text

Abstract:

The potential use of kaolin as silica and alumina precursor for the synthesis of zeolite NaX was investigated in this study. The synthesis involved three steps of reactions; the preparation of seed gel, the formation of feedstock gel using kaolin and the combination of overall gel followed by hydrothermal treatment at 105°C for 12 hours. Analysis using X-ray Diffraction (XRD) method indicated the transformation of kaolin into pure phase zeolite NaX with a small amount of kaolin was still visible. Detail microscopic analysis showed the morphology of zeolite X consisted of octahedral particles w

APA, Harvard, Vancouver, ISO, and other styles

29

Wang, Yanbin, Dian Wang, Zhaoxia Li, et al. "Preparation of Boron/Sulfur-Codoped Porous Carbon Derived from Biological Wastes and Its Application in a Supercapacitor." Nanomaterials 12, no. 7 (2022): 1182. http://dx.doi.org/10.3390/nano12071182.

Full text

Abstract:

Abundant biomass resources are a good choice for preparing electrode materials for supercapacitors, but developing a versatile and simple synthetic method to convert them into electrode materials remains a challenge. In the present research, our team reports a promising strategy and cost-efficient method to fabricate boron/sulfur-codoped porous carbon from biomass sources, mainly utilizing four biomass materials. Detailed material characterization showed that the samples produced by this approach possess rich B and S doping. Additionally, the original biomass materials treated by activation pr

APA, Harvard, Vancouver, ISO, and other styles

30

Liu, Chunqing, Nathaniel Naismith та James Economy. "Advanced mesoporous organosilica material containing microporous β-cyclodextrins for the removal of humic acid from water". Journal of Chromatography A 1036, № 2 (2004): 113–18. http://dx.doi.org/10.1016/j.chroma.2004.02.076.

Full text

APA, Harvard, Vancouver, ISO, and other styles

31

ROMBALDO, CARLA F. S., ANTONIO C. L. LISBOA, MANOEL O. A. MENDEZ, and APARECIDO R. COUTINHO. "Brazilian natural fiber (jute) as raw material for activated carbon production." Anais da Academia Brasileira de Ciências 86, no. 4 (2014): 2137–44. http://dx.doi.org/10.1590/0001-3765201420140143.

Full text

Abstract:

Jute fiber is the second most common natural cellulose fiber worldwide, especially in recent years, due to its excellent physical, chemical and structural properties. The objective of this paper was to investigate: the thermal degradation of in natura jute fiber, and the production and characterization of the generated activated carbon. The production consisted of carbonization of the jute fiber and activation with steam. During the activation step the amorphous carbon produced in the initial carbonization step reacted with oxidizing gas, forming new pores and opening closed pores, which enhan

APA, Harvard, Vancouver, ISO, and other styles

32

Babic, Biljana, Divna Djokic, and Nedeljko Krstajic. "Characterization of carbon cryogels synthesized by sol-gel polycondensation." Journal of the Serbian Chemical Society 70, no. 1 (2005): 21–31. http://dx.doi.org/10.2298/jsc0501021b.

Full text

Abstract:

Resorcinol-formaldehyde (RF) cryogels were synthesized by the sol-gel polycondensation of resorcinol (R) with formaldehyde (F) and freeze-drying was carried out with t-butanol. Carbon cryogels were obtained by pyrolyzing RF cryogels in an inert atmosphere. Characterization by nitrogen adsorption showed that the carbon cryogels were micro and mesoporous materials with high specific surface areas (SBET ? 550 m2/g). Cyclic voltammeter experiments at various scan rates (2 to 200 mV s-1) were performed to study the electrical double-layer charging of carbon cryogel electrodes in 0.5 mol dm-3 HClO4

APA, Harvard, Vancouver, ISO, and other styles

33

Martínez Gil, José Manuel, Ricardo Vivas Reyes, Marlon José Bastidas Barranco, Liliana Giraldo, and Juan Carlos Moreno-Piraján. "Biocatalysts Synthesized with Lipase from Pseudomonas cepacia on Glycol-Modified ZIF-8: Characterization and Utilization in the Synthesis of Green Biodiesel." Molecules 27, no. 17 (2022): 5396. http://dx.doi.org/10.3390/molecules27175396.

Full text

Abstract:

This research presents results on the production of biodiesel from the transesterification of acylglycerides present in palm oil, using the biocatalysts ZIF-8-PCL and Gly@ZIF-8-PCL synthesized by immobilization of Pseudomonas Cepacia Lipase as catalytic materials and using pure ZIF-8 and Gly@ZIF-8 (modified ZIF-8) as supports. The Gly@ZIF-8 carbonaceous material was prepared by wet impregnation of ZIF-8 with ethylene glycol as the carbon source, and then thermally modified. The calcination conditions were 900 °C for two hours with a heating rate of 7 °C/min in an inert atmosphere. A textural c

APA, Harvard, Vancouver, ISO, and other styles

34

Wang, Ying, Runwei Wang, Diou Xu, et al. "Synthesis and properties of MFI zeolites with microporous, mesoporous and macroporous hierarchical structures by a gel-casting technique." New Journal of Chemistry 40, no. 5 (2016): 4398–405. http://dx.doi.org/10.1039/c5nj03387j.

Full text

APA, Harvard, Vancouver, ISO, and other styles

35

Pham, Thuyet L. D., Khanh T. M. Le, Nhi T. Vo, Khoa D. Nguyen, and HaV Le. "Investigation of the aqueous adsorption capacity of a 6-connected Zr-MOF for anionic and cationic dyes in comparison with other traditional porous materials." IOP Conference Series: Earth and Environmental Science 947, no. 1 (2021): 012032. http://dx.doi.org/10.1088/1755-1315/947/1/012032.

Full text

Abstract:

Abstract A 6-connected Zr-MOF (MOF-808) was successfully synthesized via the solvothermal method with the assistance of formic acid (HCOOH). The resulting MOF showed high crystallinity and thermal stability, which was verified by powder X-ray diffraction (PXRD) measurement, scanning electron microscopy (SEM) and thermogravimetric analysis (TGA). As can be expected, the obtained material possessed high porosity with an extremely high specific BET surface area (SABet) of 2372 m2/g. The adsorption capacity of MOF-808 for anionic dyes (i.e. sunset yellow, quinoline yellow, and methyl orange) and c

APA, Harvard, Vancouver, ISO, and other styles

36

Hernández, Miguel Ángel, Fernando Rojas, Roberto Portillo, Martha Alicia Salgado, Vitalii Petranovskii, and Karla Quiroz. "Textural Properties of Hybrid Biomedical Materials Made from Extracts ofTournefortia hirsutissimaL. Imbibed and Deposited on Mesoporous and Microporous Materials." Journal of Nanomaterials 2016 (2016): 1–10. http://dx.doi.org/10.1155/2016/1274817.

Full text

Abstract:

Our research group has developed a group of hybrid biomedical materials potentially useful in the healing of diabetic foot ulcerations. The organic part of this type of hybrid materials consists of nanometric deposits, proceeding from the Mexican medicinal plantTournefortia hirsutissimaL., while the inorganic part is composed of a zeolite mixture that includes LTA, ZSM-5, clinoptilolite, and montmorillonite (PZX) as well as a composite material, made of CaCO3and montmorillonite (NABE). The organic part has been analyzed by GC-MS to detect the most abundant components present therein. In turn,

APA, Harvard, Vancouver, ISO, and other styles

37

Ghotbi, Mohammad Yeganeh, Narjes Bagheri, and S. K. Sadrnezhaad. "Large pore volume mesoporous copper particles and scaffold microporous carbon material obtained from an inorganic–organic nanohybrid material, copper-succinate-layered hydroxide." Journal of Colloid and Interface Science 362, no. 1 (2011): 89–93. http://dx.doi.org/10.1016/j.jcis.2011.05.086.

Full text

APA, Harvard, Vancouver, ISO, and other styles

38

Liu, Jun, Yuan Liu, Jiaqi Wang, et al. "Hierarchical and Heterogeneous Porosity Construction and Nitrogen Doping Enabling Flexible Carbon Nanofiber Anodes with High Performance for Lithium-Ion Batteries." Materials 15, no. 13 (2022): 4387. http://dx.doi.org/10.3390/ma15134387.

Full text

Abstract:

With the rapid development of flexible electronic devices, flexible lithium-ion batteries are widely considered due to their potential for high energy density and long life. Anode materials, as one of the key materials of lithium-ion batteries, need to have good flexibility, an excellent specific discharge capacity, and fast charge–discharge characteristics. Carbon fibers are feasible as candidate flexible anode materials. However, their low specific discharge capacity restricts their further application. Based on this, N-doped carbon nanofiber anodes with microporous, mesoporous, and macropor

APA, Harvard, Vancouver, ISO, and other styles

39

Michalska, Monika, Jiri Pavlovsky, Pavlína Peikertova, Sylva Holesova, Krishnan Shanmugam Anuratha, and Jeng-Yu Lin. "Mesoporous/Microporous Li4Ti5O12/rutile-TiO2 as an anode material for lithium-ion batteries synthesized by the sol-gel method." Solid State Ionics 384 (October 2022): 116005. http://dx.doi.org/10.1016/j.ssi.2022.116005.

Full text

APA, Harvard, Vancouver, ISO, and other styles

40

Chen, Qin, Wenhong Pu, Huijie Hou, et al. "Activated microporous-mesoporous carbon derived from chestnut shell as a sustainable anode material for high performance microbial fuel cells." Bioresource Technology 249 (February 2018): 567–73. http://dx.doi.org/10.1016/j.biortech.2017.09.086.

Full text

APA, Harvard, Vancouver, ISO, and other styles

41

Fu, Lipei, Jiahui Zhu, Weiqiu Huang, et al. "Preparation of Nano-Porous Carbon-Silica Composites and Its Adsorption Capacity to Volatile Organic Compounds." Processes 8, no. 3 (2020): 372. http://dx.doi.org/10.3390/pr8030372.

Full text

Abstract:

Carbon-silica composites with nanoporous structures were synthesized for the adsorption of volatile organic compounds (VOCs), taking tetraethyl orthosilicate (TEOS) as the silicon source and activated carbon powder as the carbon source. The preparation conditions were as follows: the pH of the reaction system was 5.5, the hydrophobic modification time was 50 h, and the dosage of activated carbon was 2 wt%. Infrared spectrum analysis showed that the activated carbon was dispersed in the pores of aerogel to form the carbon-silica composites material. The static adsorption experiments, dynamic ad

APA, Harvard, Vancouver, ISO, and other styles

42

Liu, Rui, Jing-Xuan Wang, and Wein-Duo Yang. "Hierarchical Porous Heteroatoms—Co-Doped Activated Carbon Synthesized from Coconut Shell and Its Application for Supercapacitors." Nanomaterials 12, no. 19 (2022): 3504. http://dx.doi.org/10.3390/nano12193504.

Full text

Abstract:

Coconut husk biomass waste was used as the carbon precursor to develop a simple and economical process for the preparation of hierarchical porous activated carbon, and the electrochemical properties of the electrode material were explored. The important process variables of carbonization, the weight ratios of the coconut shell/KOH, the amount of source dopant, and the carbonization temperature were investigated in order to reveal the influence of the as-obtained microporous/mesoporous/macroporous hierarchical porous carbon materials on the powder properties. Using a BET specific surface area a

APA, Harvard, Vancouver, ISO, and other styles

43

Kigozi, Moses, Ravi Kali, Abdulhakeem Bello, et al. "Modified Activation Process for Supercapacitor Electrode Materials from African Maize Cob." Materials 13, no. 23 (2020): 5412. http://dx.doi.org/10.3390/ma13235412.

Full text

Abstract:

In this work, African maize cobs (AMC) were used as a rich biomass precursor to synthesize carbon material through a chemical activation process for application in electrochemical energy storage devices. The carbonization and activation were carried out with concentrated Sulphuric acid at three different temperatures of 600, 700 and 800 °C, respectively. The activated carbon exhibited excellent microporous and mesoporous structure with a specific surface area that ranges between 30 and 254 m2·g−1 as measured by BET analysis. The morphology and structure of the produced materials are analyzed t

APA, Harvard, Vancouver, ISO, and other styles

44

Tokranov, Alexander A., Elena O. Filippova, Roman V. Shafigulin, Alexander A. Shmelev, and Andzhela V. Bulanova. "A study of the catalytic properties of mesoporous silica doped with dysprosium and modified with copper on the example of xylene hydrogenation." Butlerov Communications 58, no. 5 (2019): 81–85. http://dx.doi.org/10.37952/roi-jbc-01/19-58-5-81.

Full text

Abstract:

Catalytic hydrogenation of aromatic hydrocarbons is one of the most important reactions in industry. The use of copper as a modifier of silica is beneficial both from an economic point of view and from the point of view of ease of modification. The catalytic properties of a mesoporous structured material modified by copper (Cu/MCM) and a mesoporous structured material (MCM) doped with dysprosium and modified copper (Dy-Cu/MCM) synthesized by the template method were studied in xylene hydrogenation reactions. The textural characteristics of the catalysts obtained were studied by low-temperature

APA, Harvard, Vancouver, ISO, and other styles

45

Feitoza, Uendel dos Santos, Pascal S. Thue, Eder C. Lima, et al. "Use of Biochar Prepared from the Açaí Seed as Adsorbent for the Uptake of Catechol from Synthetic Effluents." Molecules 27, no. 21 (2022): 7570. http://dx.doi.org/10.3390/molecules27217570.

Full text

Abstract:

This work proposes a facile methodology for producing porous biochar material (ABC) from açaí kernel residue, produced by chemical impregnation with ZnCl2 (1:1) and pyrolysis at 650.0 °C. The characterization was achieved using several techniques, and the biochar material was employed as an adsorbent to remove catechol. The results show that ABC carbon has hydrophilic properties. The specific surface area and total pore volume are 1315 m2·g−1 and 0.7038 cm3·g−1, respectively. FTIR revealed the presence of oxygenated groups, which can influence catechol adsorption. The TGA/DTG indicated that th

APA, Harvard, Vancouver, ISO, and other styles

46

Verma, Priyanka, Matthew E. Potter, Alice E. Oakley, Panashe M. Mhembere, and Robert Raja. "Bimetallic PdAu Catalysts within Hierarchically Porous Architectures for Aerobic Oxidation of Benzyl Alcohol." Nanomaterials 11, no. 2 (2021): 350. http://dx.doi.org/10.3390/nano11020350.

Full text

Abstract:

Hierarchically porous (HP) zeotype materials (possessing both micropores and mesopores) offer improved diffusional access to intra-framework active sites, analogous to mesoporous materials, yet retain the high selectivity of the microporous (MP) bulk. We have recently designed crystalline hierarchically porous silicoaluminophosphates (SAPOs) with enhanced mass-transport characteristics, which can lead to significant improvement in catalytic activity and catalyst lifetime. In this study, we have prepared PdAu bimetallic nanostructures supported on HP-SAPO frameworks by an incipient impregnation

APA, Harvard, Vancouver, ISO, and other styles

47

Härmas, M., T. Thomberg, H. Kurig, T. Romann, A. Jänes, and E. Lust. "Microporous–mesoporous carbons for energy storage synthesized by activation of carbonaceous material by zinc chloride, potassium hydroxide or mixture of them." Journal of Power Sources 326 (September 2016): 624–34. http://dx.doi.org/10.1016/j.jpowsour.2016.04.038.

Full text

APA, Harvard, Vancouver, ISO, and other styles

48

Modak, Arindam, Akshay R. Mankar, Kamal Kishore Pant, and Asim Bhaumik. "Mesoporous Porphyrin-Silica Nanocomposite as Solid Acid Catalyst for High Yield Synthesis of HMF in Water." Molecules 26, no. 9 (2021): 2519. http://dx.doi.org/10.3390/molecules26092519.

Full text

Abstract:

Solid acid catalysts occupy a special class in heterogeneous catalysis for their efficiency in eco-friendly conversion of biomass into demanding chemicals. We synthesized porphyrin containing porous organic polymers (PorPOPs) using colloidal silica as a support. Post-modification with chlorosulfonic acid enabled sulfonic acid functionalization, and the resulting material (PorPOPS) showed excellent activity and durability for the conversion of fructose to 5-hydroxymethyl furfural (HMF) in green solvent water. PorPOPS composite was characterized by N2 sorption, FTIR, TGA, CHNS, FESEM, TEM and XP

APA, Harvard, Vancouver, ISO, and other styles

49

Qu, Jia, Hongpu Huang, Qiang Yang, et al. "Preparation and Application of a Magnetic Oxidized Micro/Mesoporous Carbon with Efficient Adsorption for Cu(II) and Pb(II)." Polymers 14, no. 22 (2022): 4888. http://dx.doi.org/10.3390/polym14224888.

Full text

Abstract:

Water pollution is a worldwide problem that requires urgent attention and prevention and exceeding use of heavy-metal ions is one of the most harmful factors, which poses a serious threat to human health and the ecological environment. In this work, a magnetic oxidized micro/mesoporous carbon (MOMMC) was prepared for the easy separation of Cu(II) and Pb(II) from water. The dual-template method was used to prepare micro/mesoporous carbon using sucrose as the carbon source, silica nanoparticles formed by tetraethyl orthosilicate as the microporous templates, and triblock copolymer F127 as the me

APA, Harvard, Vancouver, ISO, and other styles

50

Alcaraz, Lorena, María Esther Escudero, Francisco José Alguacil, et al. "Dysprosium Removal from Water Using Active Carbons Obtained from Spent Coffee Ground." Nanomaterials 9, no. 10 (2019): 1372. http://dx.doi.org/10.3390/nano9101372.

Full text

Abstract:

This paper describes the physicochemical study of the adsorption of dysprosium (Dy3+) in aqueous solution onto two types of activated carbons synthesized from spent coffee ground. Potassium hydroxide (KOH)-activated carbon is a microporous material with a specific Brunauer–Emmett–Teller (BET) surface area of 2330 m2·g−1 and pores with a diameter of 3.2 nm. Carbon activated with water vapor and N2 is a solid mesoporous, with pores of 5.7 nm in diameter and a specific surface of 982 m2·g−1. A significant dependence of the adsorption capacity on the solution pH was found, but it does not signific

APA, Harvard, Vancouver, ISO, and other styles

We offer discounts on all premium plans for authors whose works are included in thematic literature selections. Contact us to get a unique promo code!