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Journal articles on the topic 'Slit Pore Structure'

Author: Grafiati

Published: 28 May 2022

Last updated: 31 July 2025

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1

Zhang, Yi. "Effect of Pore Geometry on Nanoconfined Bulk-Gas Flow Behavior." Geofluids 2022 (April 27, 2022): 1–11. http://dx.doi.org/10.1155/2022/4358328.

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In order to improve energy consumption structure in Guizhou province, China, the efficient development of shale gas becomes more and more important. However, the theoretical understanding, towards microscopic gas flow mechanism, is still weak and insufficient. Although many models have been established, one part of them fails to cover all flow mechanisms, and the other part contains several fitting parameters. Moreover, nanopores can be divided into circular pore and slit pore in accordance with pore geometry. For cylindrical nanopores, by fully comparing with the existed models, a new bulk-ga

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2

Abe, Kazunori, Nouman Zobby, and Hikari Fujii. "Petrophysical Characterizations of Shale Gas Reservoirs of the Ranikot Formation in the Lower Indus Basin, Pakistan." EPI International Journal of Engineering 3, no. 2 (2021): 103–7. http://dx.doi.org/10.25042/epi-ije.082020.02.

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The complex pore structure with nano-pores of shale gas reservoirs has an impact on the hydrocarbon storage and transport systems. We examined the pore structure of the shales of the Ranikot Formation in the Lower Indus Basin, Pakistan to investigate the full scaled pore size distributions by using a combination of techniques, mercury injection capillary pressure analysis and low pressure gas adsorption methods using N2 and CO2. Isotherm curves obtained N2 and CO2 adsorptions were interpreted using density functional theory analysis for describing the nano-scaled pore size distributions. The p

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3

Xu, Hong Yan, Ai Hong Guo, and Xing Tong Chen. "Preparation and Characterization of Al-Pillared Rectorite." Advanced Materials Research 96 (January 2010): 129–33. http://dx.doi.org/10.4028/www.scientific.net/amr.96.129.

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. Al-pillared rectorites (Al-REC) were synthesized from natural calcium rectorite through the exchange of inter-lamellar ions with hydroxyalumina polycations. Furthermore, the morphology, composite structure and pore properties of such composite materials were investigated by Powder X-ray Diffraction (XRD), Fourier Transformation Infra-red Spectra (FTIR) and Nitrogen Adsorption-Desorption Isotherms. The products retain their layered structure and their pore structures are a slit-shaped pore between plate-like particles. The resultant products possess BJH pore volume as large as 0.04cm3g-1, hig

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4

Jagiello, Jacek, Jeffrey Kenvin, James P. Olivier, Andrew R. Lupini, and Cristian I. Contescu. "Using a New Finite Slit Pore Model for NLDFT Analysis of Carbon Pore Structure." Adsorption Science & Technology 29, no. 8 (2011): 769–80. http://dx.doi.org/10.1260/0263-6174.29.8.769.

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5

Curry, Joan E. "Structure of a model lubricant in a mica slit pore." Journal of Chemical Physics 113, no. 6 (2000): 2400–2406. http://dx.doi.org/10.1063/1.482055.

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6

Xu, Hong Yan, Xing Tong Chen, and Ai Hong Guo. "Preparation and Characterization of Silica-Alumina-Pillared Rectorites." Advanced Materials Research 427 (January 2012): 88–91. http://dx.doi.org/10.4028/www.scientific.net/amr.427.88.

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The silica-alumina-pillared rectorite materials (SiAl-REC) were developed a novel method, which combined several techniques such as ion-exchange, intercalation and surfactant modification. The morphology, composite structure and pore properties of such composite materials, were investigated by X-ray powder diffraction (XRD), Fourier-transform infra-red (FTIR) spectra, as well as Nitrogen Adsorption-Desorption Isotherms. The layer structure of the prepared materials retained and their pore structures were found to be slit-shaped pores located between plate-like particles. The prepared SiAl-REC

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7

Nordenström, Andreas, Artem Iakunkov, Jinhua Sun, and Alexandr V. Talyzin. "Thermally reduced pillared GO with precisely defined slit pore size." RSC Advances 10, no. 12 (2020): 6831–39. http://dx.doi.org/10.1039/d0ra00067a.

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The porous structure of tetrakis(4-aminophenyl)methane (TKAM)-pillared graphene oxide preserves after thermal reduction providing rare example of true pillared reduced GO material with precise slit pore size and sizable surface area.

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8

Zhao, Difei, Shuai Yin, Yinghai Guo, et al. "Investigation of pore structure characteristics of marine organic-rich shales using low-pressure N2 adsorption experiments and fractal theory." Interpretation 7, no. 3 (2019): T671—T685. http://dx.doi.org/10.1190/int-2018-0191.1.

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The pore structure and fractal characteristics of the Lower Cambrian marine organic-rich shale in southern China were comprehensively studied using low-pressure [Formula: see text] adsorption and organic geochemical experiments, X-ray diffraction, petrophysical property tests, and scanning electron microscope observations. The results indicate that the total organic carbon (TOC) content of the study shale varies between 0.45% and 8.50%, with an average value of 3.97%. The adsorption isotherm of the shale samples belongs to type IV, and slit-type pores are the predominant pore type in these sha

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9

Xu, Hong Yan, Xiao Jun Bao, Ting Hai Wang, and Yong Gang Wang. "Preparation and Characterization of Silica-Alumina-Pillared Montmorillonites with High Surface Area." Key Engineering Materials 368-372 (February 2008): 1712–15. http://dx.doi.org/10.4028/www.scientific.net/kem.368-372.1712.

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The silica-alumina-pillared montmorillonite materials (SiAl-MMT) were developed by a novel method, which combined several techniques such as ion-exchange, intercalation and surfactant modification. The morphology, composite structure and pore properties of such composite materials, were investigated by X-ray powder diffraction (XRD), Scanning Electronic Microscopy (SEM), Fourier-transform infra-red (FTIR) spectra, as well as Nitrogen Adsorption-Desorption Isotherms. The layer structure of the prepared materials retained and their pore structures were found to be slit-shaped pores located betwe

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10

Kryzhevich, Dmitrij, Konstantin Zolnikov, Aleksandr Korchuganov, Alexey Tsukanov, and Aleksandr Lotkov. "Simulation of benzylpenicillin molecule distribution in slit-shaped Si nanopores." EPJ Web of Conferences 221 (2019): 01024. http://dx.doi.org/10.1051/epjconf/201922101024.

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A molecular dynamics study of the behavior of benzylpenicillin molecules in slit-shaped nanopores was carried out. A model silicon material with a pore size from 10 to 50 nm was chosen as a nanoporous structure. The interaction between benzylpenicillin molecules was described by a pair potential, built on the basis of modelling the molecule behavior by all-atom force fields. It was shown that an adsorbed layer of benzylpenicillin molecules is formed near the pore walls. With a decrease in the pore size, the maximum density of molecules in the adsorbed layer decreases, while the fraction of ads

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11

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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12

Ustinov, E. A., and D. D. Do. "Adsorption in Slit Pores and Pore-Size Distribution: A Molecular Layer Structure." Adsorption Science & Technology 24, no. 1 (2006): 1–16. http://dx.doi.org/10.1260/026361706778062531.

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13

Mostefai, Riad, Mohamed Kadri, El-Arbi Senoussi, Messaoud Hacini, and Salih Awadh. "Pore Structure Characterization of Shale Reservoir Using Nitrogen Adsorption-Desorption." Iraqi Geological Journal 56, no. 1D (2023): 1–13. http://dx.doi.org/10.46717/igj.56.1d.1ms-2023-4-10.

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This research paper aimed to quantitively characterize the pore structure of shale reservoirs. Six samples of Silurian shale from the Ahnet basin were selected for nitrogen adsorption-desorption analysis. Experimental findings showed that all the samples are mainly composed of mesopores with slit-like shaped pores, as well as the Barrett-Joyner-Halenda pore volume ranging from 0.014 to 0.046 cm3/ 100 g, where the lowest value has recorded in the AHTT-1 sample, whereas the highest one in AHTT-6, while the rest samples (AHTT-2, AHTT-3, AHTT-4, AHTT-5) have a similar average value of 0.03 cm3/ 10

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14

SONG, WENHUI, JUN YAO, YANG LI, HAI SUN, DONGYING WANG, and XIA YAN. "GAS–WATER RELATIVE PERMEABILITIES FRACTAL MODEL IN DUAL-WETTABILITY MULTISCALE SHALE POROUS MEDIA DURING INJECTED WATER SPONTANEOUS IMBIBITION AND FLOW BACK PROCESS." Fractals 28, no. 07 (2020): 2050103. http://dx.doi.org/10.1142/s0218348x20501030.

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The multiphase flow behavior in shale porous media is known to be affected by multiscale pore size, dual surface wettability, and nanoscale transport mechanisms. However, it has not been fully understood so far. In this study, fractal model of gas–water relative permeabilities (RP) in dual-wettability shale porous media for both injected water spontaneous imbibition and the flow back process are proposed using fractal geometry. The shale pore structure is described as tortuous with different pore sizes and morphologies including slit pore, equilateral triangle, circular pore and square pore. T

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15

You, Fuliang, Guangdi Liu, Mingliang Sun, Cheng An, Chaozheng Li, and Yishu Li. "Impacts of Pore Structure on the Occurrence of Free Oil in Lacustrine Shale Pore Networks." Energies 16, no. 20 (2023): 7205. http://dx.doi.org/10.3390/en16207205.

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The ultimate recovery of shale oil is mostly dependent upon the occurrence and content of free oil within the nano-scaled pore network of shale reservoirs. Due to the nanoporous nature of shale, quantitatively characterizing the occurrence and content of free oil in shale is a formidable undertaking. To tackle this challenge, 12 lacustrine shale samples with diverse organic matter content from the Chang7 Member in the southern Ordos Basin were selected, and the characteristics of free oil occurrence were indirectly characterized by comparing changes in pore structure before and after organic s

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16

Sklepova, Sofiia Victoriia, Nataliia Ivanichok, Pavlo Kolkovskyi, et al. "Porous Structure and Fractal Dimensions of Activated Carbon Prepared from Waste Coffee Grounds." Materials 16, no. 18 (2023): 6127. http://dx.doi.org/10.3390/ma16186127.

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The present work reports the results of a systematic study on the evolution of the morphological properties of porous carbons derived from coffee waste using a one-pot potassium-hydroxide-assisted process at temperatures in the range of 400–900 °C. Raw materials and obtained carbons were studied by TG, DTG, SEM and nitrogen adsorption porosimetry. The decomposition temperature ranges for hemicellulose, cellulose and lignin as the main component of the feedstock have been established. It is shown that the proposed method for the thermochemical treatment of coffee waste makes it possible to obta

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17

Laktionov, Mikhail Y., Ekaterina B. Zhulina, Ralf P. Richter, and Oleg V. Borisov. "Polymer Brush in a Nanopore: Effects of Solvent Strength and Macromolecular Architecture Studied by Self-Consistent Field and Scaling Theory." Polymers 13, no. 22 (2021): 3929. http://dx.doi.org/10.3390/polym13223929.

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To study conformational transition occuring upon inferior solvent strength in a brush formed by linear or dendritically branched macromolecules tethered to the inner surface of cylindrical or planar (slit-like) pore, a self-consistent field analytical approach is employed. Variations in the internal brush structure as a function of variable solvent strength and pore radius, and the onset of formation of a hollow channel in the pore center are analysed. The predictions of analytical theory are supported and complemented by numerical modelling by a self-consistent field Scheutjens–Fleer method.

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18

Liu, Yinglin, Lei Zhang, Xuejuan Zhang, et al. "Pore Structure and Fractal Characteristics of Continental Low Maturity Organic-Rich Shale in the Sha-4 Member of the Liaohe Western Depression." Energies 16, no. 1 (2022): 327. http://dx.doi.org/10.3390/en16010327.

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The research on pore structure and heterogeneity of shale reservoirs has always been a hotspot in the study of unconventional reservoir characteristics. China is a country dominated by continental shale. Compared with marine shale, continental shale has lower maturity and stronger reservoir heterogeneity. In this study, Sha-4 shale in the Liaohe Western Depression was selected for low-temperature nitrogen adsorption, scanning electron microscopy and other experiments revealing the pore structure and fractal characteristics of continental low mature organic-rich shale. The fractal dimension was

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19

Liu, Weiwei, Kun Zhang, Qianwen Li, et al. "Quantitative Characterization for the Micronanopore Structures of Terrestrial Shales with Different Lithofacies Types: A Case Study of the Jurassic Lianggaoshan Formation in the Southeastern Sichuan Basin of the Yangtze Region." Geofluids 2021 (December 1, 2021): 1–16. http://dx.doi.org/10.1155/2021/1416303.

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Due to the specificity of the geological background, terrestrial strata are widely distributed in the major hydrocarbon-bearing basins in China. In addition, terrestrial shales are generally featured with high thickness, multiple layers, high TOC content, ideal organic matter types, and moderate thermal evolution, laying a solid material foundation for hydrocarbon generation. However, the quantitative characterization study on their pore structure remains inadequate. In this study, core samples were selected from the Middle Jurassic Lianggaoshan Formation in the southeastern Sichuan Basin of t

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20

Schoen, M., D. J. Diestler, and J. H. Cushman. "Fluids in micropores. I. Structure of a simple classical fluid in a slit‐pore." Journal of Chemical Physics 87, no. 9 (1987): 5464–76. http://dx.doi.org/10.1063/1.453665.

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21

Huang, Baiyu, Calvin H. Bartholomew, and Brian F. Woodfield. "Improved calculations of pore size distribution for relatively large, irregular slit-shaped mesopore structure." Microporous and Mesoporous Materials 184 (January 2014): 112–21. http://dx.doi.org/10.1016/j.micromeso.2013.10.008.

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22

Schoen, Martin, and Matthias Thommes. "Microscopic structure of a pure near-critical fluid confined to a mesoscopic slit-pore." Physical Review E 52, no. 6 (1995): 6375–86. http://dx.doi.org/10.1103/physreve.52.6375.

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23

Cao, Xiaomeng, Yuan Gao, Jingwei Cui, et al. "Pore Characteristics of Lacustrine Shale Oil Reservoir in the Cretaceous Qingshankou Formation of the Songliao Basin, NE China." Energies 13, no. 8 (2020): 2027. http://dx.doi.org/10.3390/en13082027.

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Shale oil is hosted in nanopores of organic-rich shales, so pore characteristics are significant for shale oil accumulation. Here we analyzed pore characteristics of 39 lacustrine shale samples of the Late Cretaceous Qingshankou Formation (K2qn) in the Songliao Basin, which is one of the main shale oil resource basins in China, using field emission-scanning electron microscopy (FE-SEM), and low-pressure nitrogen adsorption. We accomplished fractal analysis, correlation analysis using correlation matrix and multidimensional scaling (MDS), and prediction of fractal dimensions, which is the first

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24

Zhang, Jizhen, Wei Lin, Mingtao Li, Jianguo Wang, Xiao Xiao, and Yuchuan Chen. "Pore Structure and Heterogeneity Characteristics of Coal-Bearing Marine–Continental Transitional Shales from the Longtan Formation in the South Sichuan Basin, China." Minerals 14, no. 6 (2024): 588. http://dx.doi.org/10.3390/min14060588.

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Marine–continental transitional shale has become a new field for shale gas exploration and development in recent years. Its reservoir characteristics analysis lags significantly behind that of marine shale, which restricts the theoretical research on the accumulation of marine–continental transitional shale and the progress of exploration and development. The shale pore system is complex and has strong heterogeneity, which restricts the fine evaluation and optimization of the reservoir. Based on nitrogen adsorption–desorption experiments, the morphology and structural characteristics of coal-b

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25

Ding, Chenlong, Jinxian He, Hongchen Wu, and Xiaoli Zhang. "Nanometer Pore Structure Characterization of Taiyuan Formation Shale in the Lin-Xing Area Based on Nitrogen Adsorption Experiments." Minerals 11, no. 3 (2021): 298. http://dx.doi.org/10.3390/min11030298.

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Ordos Basin is an important continental shale gas exploration site in China. The micropore structure of the shale reservoir is of great importance for shale gas evaluation. The Taiyuan Formation of the lower Permian is the main exploration interval for this area. To examine the nanometer pore structures in the Taiyuan Formation shale reservoirs in the Lin-Xing area, Northern Shaanxi, the microscopic pore structure characteristics were analyzed via nitrogen adsorption experiments. The pore structure parameters, such as specific surface area, pore volume, and aperture distribution, of shale were

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26

Li, Zhidong, Zhehui Jin, and Abbas Firoozabadi. "Phase Behavior and Adsorption of Pure Substances and Mixtures and Characterization in Nanopore Structures by Density Functional Theory." SPE Journal 19, no. 06 (2014): 1096–109. http://dx.doi.org/10.2118/169819-pa.

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Summary Phase behavior in shale remains a mystery because of various complexities and effects. One complexity is from nanopores, in which phase behavior is significantly affected by the interaction between the pore surfaces and fluid molecules. The result is the heterogeneous distribution of molecules that cannot be described by bulk-phase thermodynamic approaches. Statistical thermodynamic methods can describe the phase behavior in nanopores. In this work, we apply an engineering density functional theory (DFT) combined with the Peng-Robinson equation of state (EOS) to investigate the adsorpt

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27

Hu, Zhazha, Rui Zhang, Kai Zhu, et al. "Probing the Pore Structure of the Berea Sandstone by Using X-ray Micro-CT in Combination with ImageJ Software." Minerals 13, no. 3 (2023): 360. http://dx.doi.org/10.3390/min13030360.

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During diagenesis, the transformation of unconsolidated sediments into a sandstone is usually accompanied by compaction, water expulsion, cementation and dissolution, which fundamentally control the extent, connectivity and complexity of the pore structure in sandstone. As the pore structure is intimately related to fluid flow in porous media, it is of great importance to characterize the pore structure of a hydrocarbon-bearing sandstone in a comprehensive way. Although conventional petrophysical methods such as mercury injection porosimetry, low-pressure nitrogen or carbon dioxide adsorption

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28

Guo, Fu Cheng, Xiao Rong Zhao, Ya Lin Chen, et al. "Preparation and Characterization of Al & Fe Copillared Rectorite." Advanced Materials Research 726-731 (August 2013): 687–90. http://dx.doi.org/10.4028/www.scientific.net/amr.726-731.687.

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Aluminum and iron copillared rectorite (Al/Fe-R) was prepared from sodium saturated rectorite (Na-R) by ultrasonic-assisted pillaring with hydroxyalumina and hydroxyiron polycations. The morphology, composite structure, pore properties and light response characteristics of composite material were observed with scanning electron microscopy (SEM), small angle X-ray Diffraction (XRD), nitrogen adsorption-desorption isotherm and UVvis diffuse reflectance spectrum. The fabricated material retained the layered structure with a slit-shaped pore between the layers of lamellar particles. The interlayer

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Jin, Yan, Cui Ying Feng, and Juan Juan Liu. "Experimental Study on Microstructure of Fly-Ash from Circulating Fluidized Bed Boilers." Advanced Materials Research 354-355 (October 2011): 413–16. http://dx.doi.org/10.4028/www.scientific.net/amr.354-355.413.

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Circulating fluidized bed (CFB) combustion techniques have been widely used in China. In order to improve CFB boiler performance it is necessary to study on microstructures of fly-ash. With the help of nitrogen adsorption instrument and scanning electron microscopy, the pore structure of fly-ash in circulating fluidized bed boilers are studied by nitrogen adsorption/desorption isotherms of fly-ash, hysteresis loop and pore distribution. The results indicated that different particle sizes of fly-ash in CFB boilers are of similar nitrogen adsorption isotherms, pore types and the pore size distri

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30

Sun, Jinhua, Artem Iakunkov, Anastasiia T. Rebrikova, and Alexandr V. Talyzin. "Exactly matched pore size for the intercalation of electrolyte ions determined using the tunable swelling of graphite oxide in supercapacitor electrodes." Nanoscale 10, no. 45 (2018): 21386–95. http://dx.doi.org/10.1039/c8nr07469k.

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Brodie graphite oxide structure is intercalated by TEA-BF<sub>4</sub> in acetonitrile solution at low temperature and high electrolyte concentration adopting inter-layer distance of ∼15–16.6 Å thus providing estimate for smallest size of slit pores required for penetration of the ions.

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31

Yang, Tian-Shu, Jin-Bo Hu, Zhao-Yang Yu, et al. "Characteristics of Pore Structure in the Evaporated Stage of Wood-Derived Carbon." Science of Advanced Materials 14, no. 3 (2022): 595–602. http://dx.doi.org/10.1166/sam.2022.4244.

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Major water loss in the first stage of wood-derived carbon preparation had a direct impact on pore structure during the subsequent pyrolysis of biochar materials. To explore the changes in pore space at this stage, poplar was used as the subject of this study. The pore morphology before and after water evaporation was quantitatively characterized by scanning electron microscope, nitrogen adsorption method, and mercury injection method. Both the fractal dimensions of the multistage pores were obtained by the Frenkel-Halsey-Hill model and the thermodynamic relationship model. The results showed

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32

Dong, Huaimin, Jianmeng Sun, Jinjiang Zhu, et al. "Quantitative characterization and characteristic analysis of pore structure of shale-gas reservoir in the Sichuan Basin, China." Interpretation 7, no. 4 (2019): SJ23—SJ32. http://dx.doi.org/10.1190/int-2018-0169.1.

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Quantitative characterization of pore structure in shale can provide basic parameters for evaluation of the shale-gas reservoir quality. However, it is difficult to use conventional methods to accurately and comprehensively characterize the pore structure parameters. We take shale samples from the Longmaxi Formation in the Sichuan Basin as the study object, and we use the high-pressure mercury intrusion, nitrogen adsorption, and carbon dioxide adsorption methods to characterize the whole aperture distribution. We found that the pore size in shale is positively related to the transverse relaxat

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33

Wang, Gui Fang, Shao Jian Ma, Shuai Zhang, Xian Jun Lu, Wei Mo, and Jin Lin Yang. "Study on Porous Structure and Surface Characteristics of Al-Pillared Montmorillonite." Advanced Materials Research 194-196 (February 2011): 1834–38. http://dx.doi.org/10.4028/www.scientific.net/amr.194-196.1834.

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Al-pillared montmorillonite (Al-PILM) prepared with Keggin ions was studied by means of XRD, SEM-EDS and N2 adsorption-desorption isotherms.The rusults show that, compared to unpillared Na-montmorillonite (Na-M), the interlayer spacing d(001) value, BET specific surface area, surface fractal dimension and the proportion of microporous specific surface area of Al-PILM are larger and the surface is relatively rough. The BJH porous volume distribution of Al-PILM is the most probable distribution, and the most probable pore size is about 2 nm, belonging to mesopore. The porous structure of Al-PILM

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Zheng, Aiwei, Hanyong Bao, Li Liu, Mingkai Tu, Changpeng Hu, and Lei Yang. "Investigation of Multiscaled Pore Structure of Gas Shales using Nitrogen Adsorption and FE-SEM Imaging Experiments." Geofluids 2022 (June 7, 2022): 1–13. http://dx.doi.org/10.1155/2022/1057653.

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Nanopore in shales is the place for hydrocarbon accumulation and migration. However, there is a lack of understanding of the nanopore structure with regard to their ultratight and multiscaled nature. Here, the porous morphology of gas shales from the Sichuan Basin of China was investigated using field emission-scanning electronic microscopy (FE-SEM) with high resolution. Low-pressure nitrogen adsorption experiments at 77 K were conducted to obtain the adsorption-desorption isotherms, BET-specific surface area, pore size distribution, pore volume, and average pore diameter values. Research resu

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Zhao, Xiao Rong, Li Hua Zhu, and He Qing Tang. "Preparation and Characterization of Cobalt Modified Rectorite." Advanced Materials Research 773 (September 2013): 263–66. http://dx.doi.org/10.4028/www.scientific.net/amr.773.263.

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Cobalt modified rectorite (Co@R) was prepared from sodium saturated rectorite (Na-R) with a two-step method of microwave-assisted ion-exchange and in-situ hydrolysis. The morphology, composite structure and pore properties of Co@R were observed with scanning electron microscopy (SEM), small angle X-ray Diffraction (XRD) and nitrogen adsorption-desorption isotherm. The adsorption ability and catalytic behavior of Co@R were studied with methyl blue (MB) as probe contaminant. The interstratified layered Na-R was stripped fully and the resultant material remained the layered structure with a slit-

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36

Fang, Xianglong, Yidong Cai, Qinhong Hu, Ping Gao, Dameng Liu, and Yujing Qian. "Effect of Formation Pressure on Pore Structure Evolution and Hydrocarbon Expulsion in Organic-Rich Marine Shale." Processes 11, no. 4 (2023): 1007. http://dx.doi.org/10.3390/pr11041007.

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Exploring the relationship between formation pressure and shale pore evolution is helpful for the enrichment and development of marine shale gas accumulation theory. The thermal evolution experiment was carried out on the Xiamaling Formation (Pr3x) lowly matured marine shale, which has a similar sedimentary environment to the Longmaxi Formation (S1l) highly matured marine shale. Comparative experiments of open and semi-closed pyrolysis and multiple pore structure characterization techniques, including CO2 and N2 physisorption, mercury intrusion porosimetry, and field emission scanning electron

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Dubinin, M. M., and O. Kadlec. "Microporous Adsorbents with Limiting Development of Micropores." Adsorption Science & Technology 4, no. 1-2 (1987): 45–52. http://dx.doi.org/10.1177/0263617487004001-204.

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The adsorption properties for benzene vapors and the pore structure of carbon adsorbents with a practically-limiting macropore volume have been investigated. The salient characteristic of the adsorbents studied was the position of the distribution curves of the micropore volume, whose maxima for the slit-shaped pore model corresponded to halfwidths of 1.2 to 1.4 nm and the micropore volume to 1.5 cm3 g–1. The difference in parameters of the Dubinin-Stoechli adsorption equation was only quantitative. The adsorption isotherms are very closely described by the DS adsorption equation in a broad ra

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Wang, Daxing, Zhitao Xie, Haiyan Hu, Tao Wang, and Ze Deng. "Pore Structure and Fractal Characteristics of Marine–Continental Transitional Black Shales: A Case Study of the Permian Shanxi Formation in the Eastern Margin of the Ordos Basin." Processes 11, no. 5 (2023): 1424. http://dx.doi.org/10.3390/pr11051424.

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To study the microscopic pore characteristics of marine–continental transitional shale, we studied the Daning–Jixian block of the Shanxi Formation using low-pressure CO2 adsorption (LP-CO2A) and low-temperature N2 adsorption (LT-N2A) methods in conjunction with field emission scanning electron microscopy (FE-SEM), geochemistry, and mineral composition analysis in order to obtain pore structure characteristic parameters. The fractal dimension of the pores was calculated using the Frankel–Halsey–Hill (FHH) model, and the study also discusses the factors that influence the pore structure. The stu

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Wang, Yuqi, Dongxia Chen, Yuchao Wang, Wenzhi Lei, and Fuwei Wang. "Characteristics and Controlling Factors of Pores in Different Shale Lithofacies Reservoirs of Lower Cambrian Qiongzhusi Formation, Southwestern Sichuan Basin, China." Minerals 13, no. 11 (2023): 1442. http://dx.doi.org/10.3390/min13111442.

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The shale reservoirs of the Lower Cambrian Qiongzhusi Formation are widely distributed in the Sichuan Basin and have abundant gas resources. However, the shale lithofacies of the Qiongzhusi Formation are complex due to frequent sea level changes. The reservoir pore structure characteristics and gas content of different shale lithofacies vary significantly, which makes identifying the ‘sweet spot’ a challenging task. In this study, core observation and X-ray diffraction (XRD) were used to analyze the lithofacies types and characteristics of the study area. The pore types of different shale lith

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Wang, Jianguo, Jizhen Zhang, Xiao Xiao, Ya’na Chen, and Denglin Han. "Pore Structure and Fractal Characteristics of Inter-Layer Sandstone in Marine–Continental Transitional Shale: A Case Study of the Upper Permian Longtan Formation in Southern Sichuan Basin, South China." Fractal and Fractional 9, no. 1 (2024): 11. https://doi.org/10.3390/fractalfract9010011.

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With the evolution of unconventional oil and gas exploration concepts from source rocks and reservoirs to carrier beds, the inter-layer sandstone carrier bed within marine–continental transitional shale strata has emerged as a significant target for oil and gas exploration. The inter-layer sandstone is closely associated with the source rock and differs from conventional tight sandstone in terms of sedimentary environment, matrix composition, and the characteristics of reservoir microscopic pore development. Preliminary exploration achievements display that the inter-layer sandstone is plentif

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Xu, Gui Xi, Shu Zhong Wang, Xiang Rong Luo, and Ze Feng Jing. "Investigation on Jurassic Shale Gas Reservoir Characteristics from Northern Qaidam Basin." Key Engineering Materials 748 (August 2017): 441–45. http://dx.doi.org/10.4028/www.scientific.net/kem.748.441.

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The Jurassic continental shale from northern Qaidam basin was selected as the research object, through the analysis of X-ray diffraction (XRD), field emission scanning electron microscopy (SEM) and nitrogen adsorption experiment, the mineral composition and pore structure characteristics of Jurassic continental shale from the northern Qaidam basin have been investigated in detail. All shale samples studied are quite rich in clay minerals. The clay mineral content ranges from 59.8% to 83.3% with an average of 74.6%, and the brittle mineral content accounts for 16.5% to 39.3%. Nitrogen adsorptio

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Iqbal, Muhammad Atif, Reza Rezaee, Gregory Smith, and Partha Pratim Mandal. "Implications of thin laminations on pore structure of marine shale reservoir: Goldwyer Formation case study from Western Australia." APPEA Journal 61, no. 1 (2021): 205. http://dx.doi.org/10.1071/aj20025.

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The pore structure of a shale reservoir is a major control on hydrocarbon potential, yet shale pore systems are complex and affected by various factors. This paper focuses on the differences in pore structure between thinly laminated and massive black shale (MBSh) beds in the Ordovician Goldwyer-III shale, Canning Basin, Western Australia. A multiscale approach included image logs, core descriptions, thin sections, scanning electron microscope and X-ray diffraction analysis with low-pressure nitrogen and carbon dioxide gas adsorption tests. The results indicate that the Goldwyer shale comprise

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Nohman, A. K. H., and M. I. Zaki. "Nitrogen Adsorption and Surface Texture of High-Area Manganese Oxides Derived from Potassium-Contaminated NH4MnO4." Adsorption Science & Technology 11, no. 1 (1994): 1–14. http://dx.doi.org/10.1177/026361749401100101.

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Nitrogen sorption isotherms have been determined at 77 K on pre-characterised MnOx bulk samples obtained by calcination at 423–873 K of K+-contaminated NH4MnO4. The isotherms have been analysed for estimating the surface area and pore structure of the test samples adopting the αs-method and standard adsorption data determined on a local reference material (calcination product of the permanganate at 1273 K for 20 h). The most prominent result of the present investigation is that the presence of K+ leads to the formation of a channel-structured KMn8O16 bulk phase at 573 K and the following conse

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Zhang, Jianguo, Xiyuan Li, Jihong Jiao, Jianbao Liu, Feng Chen, and Zhimin Song. "Comparative Study of Pore Structure Characteristics between Mudstone and Coal under Different Particle Size Conditions." Energies 14, no. 24 (2021): 8435. http://dx.doi.org/10.3390/en14248435.

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In order to investigate the difference of pore structure characteristics between mudstone and coal under different particle size conditions, samples acquired from Henan province were smashed and screened into three different particle sizes (20–40, 80–100, and >200 mesh) to conduct the experiments, using the high-pressure mercury intrusion porosimetry (MIP) and low-temperature N2 adsorption (LT-N2A) techniques. The results demonstrated that the proportion of open pores or semi-enclosed pores increased, and the pores became preferable contacted each other for both mudstone and coal during the

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Wang, Yang, Caifang Wu, Yong Qin, Shimin Liu, and Rui Zhang. "Multi-Angle Investigation of the Fractal Characteristics of Nanoscale Pores in the Lower Cambrian Niutitang Shale and Their Implications for CH4 Adsorption." Journal of Nanoscience and Nanotechnology 21, no. 1 (2021): 156–67. http://dx.doi.org/10.1166/jnn.2021.18463.

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Shale gas has received widespread interest due to its successful commercial development in China. Pore structures in shale can directly control its gas storage and migration properties. In this study, field emission scanning electron microscopy (FE-SEM), low-pressure N2/CO2 adsorption and highpressure methane adsorption were used to investigate the nanoscale pore structures of the Lower Cambrian Niutitang Formation in the southeastern Upper Yangtze platform. The fractal parameters of the pore structures were also calculated using the Frenkel–Halsey–Hill (FHH) model. The relationships between t

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Zhang, Yangchen, Xiyu Qu, Changsheng Miao, Jianfeng Zhu, Wen Xu, and Weiming Wang. "Effect of Authigenic Chlorite on the Pore Structure of Tight Clastic Reservoir in Songliao Basin." International Journal of Environmental Research and Public Health 20, no. 2 (2023): 1406. http://dx.doi.org/10.3390/ijerph20021406.

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Authigenic chlorite is a common clay mineral in clastic rock reservoirs, and it has an important influence on the pore structure of tight clastic rock reservoirs. In this paper, the tight clastic reservoirs in the Lower Cretaceous Yingcheng Formation in the Longfengshan subsag in the Changling fault depression in the Songliao Basin were investigated. Polarized light microscopy, scanning electron microscopy (SEM), X-ray diffraction (XRD), high-pressure mercury injection (HPMI), and low temperature nitrogen adsorption (LTNA) were used to study the influence of authigenic chlorite on the pore str

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Sikorski, Andrzej. "Computer Simulation of Polymer Chains in Confinement." Solid State Phenomena 138 (March 2008): 451–75. http://dx.doi.org/10.4028/www.scientific.net/ssp.138.451.

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Properties of macromolecules confined in a narrow slit, pore or capillary are important due to of their practical importance. Theoretical treatment of such systems is also interesting because the introduction of confinement has an impact on most properties of polymer chains and it gained a longstanding attention. In order to determine the properties of such systems coarse-grained models of confined polymers were designed where macromolecules were represented by united atoms. Lattice approximation was also often introduced. Different macromolecular architectures were studied: linear, cyclic and

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Wang, Youzhi, and Cui Mao. "Nano/Micro Pore Structure and Fractal Characteristics of Baliancheng Coalfield in Hunchun Basin." Journal of Nanoscience and Nanotechnology 21, no. 1 (2021): 682–92. http://dx.doi.org/10.1166/jnn.2021.18729.

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The pore structure characteristic is an important index to measure and evaluate the storage capacity and fracturing coal reservoir. The coal of Baliancheng coalfield in Hunchun Basin was selected for experiments including low temperature nitrogen adsorption method, Argon Ion milling Scanning Electron Microscopy (Ar-SEM), Nuclear Magnetic Resonance (NMR), X-ray diffraction method, quantitative mineral clay analysis method. The pore structure of coal was quantitatively characterized by means of fractal theory. Meanwhile, the influences of pores fractal dimension were discussed with experiment da

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Ohba, Tomonori, Katsumi Kaneko, and Hirofumi Kanoh. "Local Ordered Structure of Propylene Carbonate in Slit-Shaped Carbon Nanopores by GCMC Simulation." ISRN Nanotechnology 2011 (October 26, 2011): 1–5. http://dx.doi.org/10.5402/2011/708927.

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An electric double-layer capacitor (EDLC) has high potential for storing electrical energy at a high power density. It was reported that a narrow nanopore system provides higher performance of EDLCs. In such a system, propylene carbonate (PC) is generally used as a solvent in EDLCs. Hence, the structure of PC in the slit-shaped carbon nanopores should be investigated to reveal the EDLC mechanism. In this paper, grand canonical Monte Carlo simulation of PC adsorbed in nanopores was performed to elucidate molecular-level understanding of the influence of PC on the EDLC performance. PC molecules

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Urita, Koki, Sota Takahama, Fernando Vallejos Burgos, Chiharu Urita, Hiroo Notohara, and Isamu Moriguchi. "(Invited) Edlc Characterization of Carbon Electrodes with Micro to Narrow Mesopores." ECS Meeting Abstracts MA2024-02, no. 6 (2024): 693. https://doi.org/10.1149/ma2024-026693mtgabs.

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The capacitance of carbon electrodes on electric double-layer capacitors (EDLCs) is improved by controlling the pore structure to increase the surface area where the electric double-layer can form. Porous carbon electrodes with micropores and narrow mesopores, through which bare electrolyte ions can invade, exhibit a high capacitance [1-3]. Because the electrolyte ions exist as a solvated state with solvent molecules in the electrolyte solution, a desolvation process in pores is required to improve EDLC performance. The desolvation of electrolyte ions spontaneously occurs in certain pore struc

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