1
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Li J, Li B, Liu Y, Lang Y, Lan Y, Rahman SS. Giant Effect of CO 2 Injection on Multiphase Fluid Adsorption and Shale Gas Production: Evidence from Molecular Dynamics. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2024; 40:13622-13635. [PMID: 38904387 DOI: 10.1021/acs.langmuir.4c01222] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/22/2024]
Abstract
Carbon dioxide (CO2) injection in unconventional gas-bearing shale reservoirs is a promising method for enhancing methane recovery efficiency and mitigating greenhouse gas emissions. The majority of methane is adsorbed within the micropores and nanopores (≤50 nm) of shale, which possess extensive surface areas and abundant adsorption sites for the sequestration system. To comprehensively discover the underlying mechanism of enhanced gas recovery (EGR) through CO2 injection, molecular dynamics (MD) provides a promising way for establishing the shale models to address the multiphase, multicomponent fluid flow behaviors in shale nanopores. This study proposes an innovative method for building a more practical shale matrix model that approaches natural underground environments. The grand canonical Monte Carlo (GCMC) method elucidates gas adsorption and sequestration processes in shale gas reservoirs under various subsurface conditions. The findings reveal that previously overlooked pore slits have a significant impact on both gas adsorption and recovery efficiency. Based on the simulation comparisons of absolute and excess uptakes inside the kerogen matrix and the shale slits, it demonstrates that nanopores within the kerogen matrix dominate the gas adsorption while slits dominate the gas storage. Regarding multiphase, multicomponent fluid flow in shale nanopores, moisture negatively influences gas adsorption and carbon storage while promoting methane recovery efficiency by CO2 injection. Additionally, saline solution and ethane further impede gas adsorption while facilitating displacement. Overall, this work elucidates the substantial effect of CO2 injection on fluid transport in shale formations and advances the comprehensive understanding of microscopic gas flow and recovery mechanisms with atomic precision for low-carbon energy development.
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Affiliation(s)
- Jiawei Li
- State Key Laboratory of Continental Shale Oil, Daqing 163712, China
- Daqing Oilfield Exploration and Development Research Institute, Daqing, Heilongjiang 163712, China
| | - Binhui Li
- State Key Laboratory of Continental Shale Oil, Daqing 163712, China
- Daqing Oilfield Exploration and Development Research Institute, Daqing, Heilongjiang 163712, China
| | - Yong Liu
- State Key Laboratory of Continental Shale Oil, Daqing 163712, China
- Daqing Oilfield Exploration and Development Research Institute, Daqing, Heilongjiang 163712, China
| | - Yue Lang
- Daqing Oilfield Exploration and Development Research Institute, Daqing, Heilongjiang 163712, China
| | - Yubo Lan
- State Key Laboratory of Continental Shale Oil, Daqing 163712, China
- Daqing Oilfield Exploration and Development Research Institute, Daqing, Heilongjiang 163712, China
| | - Sheikh S Rahman
- School of Minerals and Energy Resources Engineering, UNSW, Sydney 2052, Australia
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2
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Sui H, Zhang F, Zhang L, Wang D, Wang Y, Yang Y, Yao J. Competitive sorption of CO 2/CH 4 and CO 2 capture on modified silica surfaces: A molecular simulation. THE SCIENCE OF THE TOTAL ENVIRONMENT 2024; 908:168356. [PMID: 37949136 DOI: 10.1016/j.scitotenv.2023.168356] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/31/2023] [Revised: 10/16/2023] [Accepted: 11/03/2023] [Indexed: 11/12/2023]
Abstract
The effect of functionalization of modified silica (FMS) surfaces on the adsorption behaviors for CH4, CO2 and the mixture have been studied by combining a grand canonical Monte Carlo (GCMC) and molecular dynamics (MD) methods. The isotherms, gas distribution, sorption sites, isosteric heat, interaction energy and adsorption selectivity for CO2/CH4 mixture are computed and discussed. And the effects of pressure and temperature on adsorption behavior are also studied. The adsorption capacity (C) of surface with various functional groups for CH4 is as follows: C(SiO2-COOH) > C(SiO2-SH) > C(SiO2-OH) > C(SiO2-CH3) > C(SiO2-NH2) > C(SiO2-H) and for CO2 is as follows: C(SiO2-COOH) > C(SiO2-SH) > C(SiO2-NH2) > C(SiO2-OH) > C(SiO2-CH3) > C(SiO2-H). Increasing temperature is not advantageous for gas adsorption on all FMS surfaces. The CO2/CH4 selectivity (S) for FMS surfaces decrease in the following order of S(SiO2-COOH) > S(SiO2-NH2) > S(SiO2-OH) > S(SiO2-SH) > S(SiO2-CH3) > S(SiO2-H). As the pressure increase, the CO2/CH4 selectivity decrease early and then flatten out to a constant value. The isosteric heat of adsorption (Qst) for gas adsorbed on each FMS surface are also calculated, the value of isosteric heat for CO2 is much higher than that for CH4 due to the stronger interaction between CO2 molecules and functional groups of FMS surface. The result of the smallest self-diffusion coefficients of gas in SiO2-COOH slit pores is consistent with the adsorption capacity in the slit pore with corresponding functional group. The electronegative atoms in the functional group act as basic adsorption sites for gas adsorbate molecules, which generates a larger electrostatic contribution on the selectivity of CO2 over CH4.
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Affiliation(s)
- Hongguang Sui
- College of Science, China University of Petroleum (East China), Qingdao 266580, PR China.
| | - Fengyun Zhang
- College of Science, China University of Petroleum (East China), Qingdao 266580, PR China
| | - Lei Zhang
- School of Petroleum Engineering, China University of Petroleum (East China), Qingdao 266580, PR China
| | - Diansheng Wang
- College of Science, China University of Petroleum (East China), Qingdao 266580, PR China
| | - Yudou Wang
- College of Science, China University of Petroleum (East China), Qingdao 266580, PR China
| | - Yongfei Yang
- School of Petroleum Engineering, China University of Petroleum (East China), Qingdao 266580, PR China
| | - Jun Yao
- School of Petroleum Engineering, China University of Petroleum (East China), Qingdao 266580, PR China
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3
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Wang Z, Liu Z, Wang B, Pei J. The characteristic of competitive adsorption of HCHO and C 6H 6 on activated carbon by molecular simulation. JOURNAL OF THE AIR & WASTE MANAGEMENT ASSOCIATION (1995) 2023; 73:797-812. [PMID: 37610379 DOI: 10.1080/10962247.2023.2249204] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/07/2023] [Revised: 08/02/2023] [Accepted: 08/08/2023] [Indexed: 08/24/2023]
Abstract
To explore the characteristic of competitive adsorption of formaldehyde (HCHO) and benzene(C6H6) on activated carbon, the slit models of activated carbon with different pore sizes of 1 nm, 2 nm and 4 nm were constructed by using the Visualizer module of Materials Studio molecular simulation software. The adsorption of single-component C6H6 and HCHO at three different temperatures of 288.15K,293.15K and 323.15K were conducted by the method of grand canonical Monte Carlo. Experiments were carried out to verify the accuracy of simulation results. For the single-compound adsorption, the adsorption amount of C6H6 varied little at different temperature conditions, while the pore size had a significant effect on the adsorption amount of C6H6, and the adsorption capability increased as the pore size goes up. The adsorption capacity of HCHO decreased as the temperature goes up, and the adsorption capacity of both 1 nm and 4 nm pore size activated carbon was less than that of 2 nm pore size. As for the competitive adsorption, HCHO has a better adsorption effect by activated carbon when the pore is in small size like 1 nm, while the competitive adsorption ability of C6H6 is much better than HCHO as the pore size goes up to 2 nm or 4 nm.Implications: (1) Understanding the equilibrium process of activated carbon adsorption at the molecular level based on the co-existence of multi-component VOCs. (2) The effects of concentration, temperature and humidity factors on the coupling of the dynamic equilibrium of competing adsorption of benzene and formaldehyde were analyzed. (3) The accuracy of the molecular simulations was verified using an experimental approach.
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Affiliation(s)
- Zhiqiang Wang
- Tianjin Key Laboratory of Refrigeration, School of Mechanical Engineering, Tianjin University of Commerce, Tianjin, China
| | - Zhaoyang Liu
- Tianjin Key Laboratory of Refrigeration, School of Mechanical Engineering, Tianjin University of Commerce, Tianjin, China
| | - Bo Wang
- Tianjin Key Laboratory of Refrigeration, School of Mechanical Engineering, Tianjin University of Commerce, Tianjin, China
| | - Jingjing Pei
- School of Environment, Tianjin University, Tianjin, China
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4
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Lun Z, Zhou X, Li D, Tang X, Fu X, Zhang Y, Zhang D. Influences of long-duration NO exposure on CO 2 adsorption on coals: insights into oxy-coal burning flue gas storage in coal reservoirs. ENVIRONMENTAL TECHNOLOGY 2023:1-16. [PMID: 37594271 DOI: 10.1080/09593330.2023.2248556] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/15/2023] [Accepted: 08/05/2023] [Indexed: 08/19/2023]
Abstract
Introducing oxy-coal burning flue gas into coal reservoirs has the advantages of mitigating emissions of CO2, NOx, and SO2, and producing in-situ coalbed methane (CBM). Given the characteristics of the geologic time scale for fluid sequestration, the long-duration NO exposure was conducted for various ranks of coal matrices to access the potential impacts of NO exposure on CO2 storage. Afterwards, the changes in critical physico-chemical properties and adsorbability of various ranks of coal matrices to CO2 because of long-duration NO exposure were revealed. Finally, the implications to implement oxy-coal burning flue gas sequestration in unmineable coal reservoirs with CBM production were indicated. The results demonstrate that the long-duration interaction with NO reduces the number of micro- and meso-pores of various ranks of coals, especially those with diametres below 4.00 nm. Moreover, the long-duration NO exposure reduces the oxygen-containing functional groups while significantly increasing the amine/amide-N for all the coals. The aforementioned alterations in the surface chemistry property imply that the coal matrix is capable of chemically adsorbing NO, thereby achieving its stable storage in target coal reservoirs. Given the electron donor-acceptor interactions between amine/amide-N and CO2, the NO exposure can elevate the CO2 storage capability of various ranks of coals under typical reservoir temperature and pressure. In summary, introducing oxy-coal burning flue gas into coal reservoirs is capable of stably storing critical gaseous pollutants and simultaneously enhancing the CO2 storage potential of coal reservoirs, thereby updating the existing oxy-coal burning technology and CO2 sequestration in unmineable coal reservoirs with the enhanced CBM recovery technology.
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Affiliation(s)
- Zengmin Lun
- State Key Laboratory of Shale Oil and Gas Enrichment Mechanisms and Effective Development, Beijing, People's Republic of China
- Key Laboratory of Shale Oil and Gas Exploration & Production, SINOPEC, Beijing, People's Republic of China
| | - Xia Zhou
- State Key Laboratory of Shale Oil and Gas Enrichment Mechanisms and Effective Development, Beijing, People's Republic of China
- Key Laboratory of Shale Oil and Gas Exploration & Production, SINOPEC, Beijing, People's Republic of China
| | - Dongyang Li
- Faculty of Chemical Engineering, Kunming University of Science and Technology, Kunming, People's Republic of China
| | - Xing Tang
- Faculty of Chemical Engineering, Kunming University of Science and Technology, Kunming, People's Republic of China
| | - Xuexiang Fu
- Faculty of Chemical Engineering, Kunming University of Science and Technology, Kunming, People's Republic of China
| | - Yanji Zhang
- Faculty of Chemical Engineering, Kunming University of Science and Technology, Kunming, People's Republic of China
| | - Dengfeng Zhang
- Faculty of Chemical Engineering, Kunming University of Science and Technology, Kunming, People's Republic of China
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5
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Zhang Y, Li D, Xin G, Ren S. A Review of Molecular Models for Gas Adsorption in Shale Nanopores and Experimental Characterization of Shale Properties. ACS OMEGA 2023; 8:13519-13538. [PMID: 37091427 PMCID: PMC10116638 DOI: 10.1021/acsomega.3c01036] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/15/2023] [Accepted: 03/27/2023] [Indexed: 05/03/2023]
Abstract
Shale gas, as a promising alternative energy source, has received considerable attention because of its broad resource base and wide distribution. The establishment of shale models that can accurately describe the composition and structure of shale is essential to perform molecular simulations of gas adsorption in shale reservoirs. This Review provides an overview of shale models, which include organic matter models, inorganic mineral models, and composite shale models. Molecular simulations of gas adsorption performed on these models are also reviewed to provide a more comprehensive understanding of the behaviors and mechanisms of gas adsorption on shales. To accurately understand the gas adsorption behaviors in shale reservoirs, it is necessary to be aware of the pore structure characteristics of shale reservoirs. Thus, we also present experimental studies on shale microstructure analysis, including direct imaging methods and indirect measurements. The advantages, disadvantages, and applications of these methods are also well summarized. This Review is useful for understanding molecular models of gas adsorption in shales and provides guidance for selecting experimental characterization of shale structure and composition.
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Affiliation(s)
- Yufan Zhang
- School
of Energy and Power Engineering, Shandong
University, Jinan 250061, China
| | - Dexiang Li
- School
of Energy and Power Engineering, Shandong
University, Jinan 250061, China
- Phone:
+ 8613730981950.
| | - Gongming Xin
- School
of Energy and Power Engineering, Shandong
University, Jinan 250061, China
| | - Shaoran Ren
- School
of Petroleum Engineering, China University
of Petroleum (East China), Qingdao 266580, China
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6
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Functionalized 3D Covalent Organic Frameworks for High‐Performance CO
2
Capture and Separation over N
2. ADVANCED THEORY AND SIMULATIONS 2022. [DOI: 10.1002/adts.202200588] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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7
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Peredo-Mancilla D, Matei Ghimbeu C, Réty B, Ho BN, Pino D, Vaulot C, Hort C, Bessieres D. Surface-Modified Activated Carbon with a Superior CH 4/CO 2 Adsorption Selectivity for the Biogas Upgrading Process. Ind Eng Chem Res 2022. [DOI: 10.1021/acs.iecr.2c01264] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Deneb Peredo-Mancilla
- Department of Fisheries, Universidad Autónoma de Baja California Sur, La Paz 23080, Mexico
- CNRS/Total/Univ Pau & Pays Adour/E2S UPPA, Laboratoire des Fluides Complexes et Leurs Reservoirs-IPRA, UMRS5150, 64000 Pau, France
| | - Camelia Matei Ghimbeu
- Institut de Science des Matériaux de Mulhouse (IS2M) UMR 7361, Université de Haute-Alsace, CNRS, F-68100 Mulhouse, France
- Université de Strasbourg, F-67081 Strasbourg, France
| | - Bénédicte Réty
- Institut de Science des Matériaux de Mulhouse (IS2M) UMR 7361, Université de Haute-Alsace, CNRS, F-68100 Mulhouse, France
- Université de Strasbourg, F-67081 Strasbourg, France
| | - Bich-Ngoc Ho
- CNRS/Total/Univ Pau & Pays Adour/E2S UPPA, Laboratoire des Fluides Complexes et Leurs Reservoirs-IPRA, UMRS5150, 64000 Pau, France
- Université Pau & Pays Adour/E2S UPPA, Laboratoire de Thermique, Energetique et Procedes-IPRA, EA1932, 64000 Pau, France
| | - David Pino
- CNRS/Total/Univ Pau & Pays Adour/E2S UPPA, Laboratoire des Fluides Complexes et Leurs Reservoirs-IPRA, UMRS5150, 64000 Pau, France
| | - Cyril Vaulot
- Institut de Science des Matériaux de Mulhouse (IS2M) UMR 7361, Université de Haute-Alsace, CNRS, F-68100 Mulhouse, France
- Université de Strasbourg, F-67081 Strasbourg, France
| | - Cécile Hort
- Université Pau & Pays Adour/E2S UPPA, Laboratoire de Thermique, Energetique et Procedes-IPRA, EA1932, 64000 Pau, France
| | - David Bessieres
- CNRS/Total/Univ Pau & Pays Adour/E2S UPPA, Laboratoire des Fluides Complexes et Leurs Reservoirs-IPRA, UMRS5150, 64000 Pau, France
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8
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Nitrogen Atom-Doped Layered Graphene for High-Performance CO2/N2 Adsorption and Separation. ENERGIES 2022. [DOI: 10.3390/en15103713] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
The development of high-performance CO2 capture and separation adsorbents is critical to alleviate the deteriorating environmental issues. Herein, N atom-doped layered graphene (N-MGN) was introduced to form triazine and pyridine as potential CO2 capture and separation adsorbents via regulation of interlayer spacings. Structural analyses showed that accessible surface area of the N-MGN is 2521.72 m2 g−1, the porosity increased from 9.43% to 84.86%. At ultra-low pressure, N-MGN_6.8 have exhibited a high CO2 adsorption capacity of 10.59 mmol/g at 298 K and 0.4 bar. At high pressure, the absolute adsorption capacities of CO2 in N-MGN_17.0 (40.16 mmol g−1) at 7.0 MPa and 298 K are much larger than that of N-doping slit pore. At 298 K and 1.0 bar, the highest selectivity of CO2 over N2 reached up to ~133 in N-MGN_6.8. The research shows that N doping can effectively improve the adsorption and separation capacity of CO2 and N2 in layered graphene, and the interlayer spacing has an important influence on the adsorption capacity of CO2/N2. The adsorption heat and relative concentration curves further confirmed that the layered graphene with an interlayer spacing of 6.8 Å has the best adsorption and separation ability of CO2 and N2 under low pressure. Under high pressure, the layered graphene with the interlayer spacing of 17.0 Å has the best adsorption and separation ability of CO2 and N2.
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9
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Kanaparthi S, Singh SG. Simultaneous Detection of CO and NH 3 Gases at Room Temperature with an Array of ZnS Chemiresistive Sensors and the Superposition Principle. Anal Chem 2022; 94:4602-4609. [PMID: 35258944 DOI: 10.1021/acs.analchem.1c04319] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Simultaneous detection of multiple toxic gases in the air using room temperature gas sensors is significant in low-power environmental monitoring applications. However, the low-temperature resistive gas sensors are sensitive to more than one gas, and thus, an array of gas sensors and high energy-consuming machine learning algorithms are required to predict the concentrations of the individual gases in mixed target gas. Here, we report a computationally less intensive method to predict the composition of the target gases using linear gas sensors. A sensor array consisting of two ZnS resistive gas sensors biased at different voltages in conjunction with the superposition principle is used to predict the concentration of individual gases in the binary mixture of NH3 and CO present in the air. Further, the effect of humidity on response is mitigated by formulating the sensitivity of the sensors as a function of relative humidity. The proposed algorithm predicted the concentration of the individual gases in mixed gas with a maximum absolute error of ∼15% irrespective of humidity levels, which is practically allowed in most gas sensing applications. As the superposition principle is a low-power consuming technique, the proposed approach can be used in applications where trace levels of gases in mixed targets need to be detected with energy-efficient methods.
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Affiliation(s)
- Srinivasulu Kanaparthi
- Department of Electrical Engineering, Indian Institute of Technology Hyderabad, Kandi, 502285, India
| | - Shiv Govind Singh
- Department of Electrical Engineering, Indian Institute of Technology Hyderabad, Kandi, 502285, India
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10
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Pu Y, Yang Z, Wee V, Wu Z, Jiang Z, Zhao D. Amino-functionalized NUS-8 nanosheets as fillers in PIM-1 mixed matrix membranes for CO2 separations. J Memb Sci 2022. [DOI: 10.1016/j.memsci.2021.119912] [Citation(s) in RCA: 14] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
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11
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Deng X, Zhang Q, Zhang Z, Li Q, Liu X. Adsorption and diffusion behavior of CO2/H2 mixture in calcite slit pores: A molecular simulation study. J Mol Liq 2022. [DOI: 10.1016/j.molliq.2021.118306] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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12
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Zhao R, Liu G, Wei G, Gao J, Lu H. Analysis of SO 2 Physisorption by Edge-Functionalized Nanoporous Carbons Using Grand Canonical Monte Carlo Methods and Density Functional Theory: Implications for SO 2 Removal. ACS OMEGA 2021; 6:33735-33746. [PMID: 34926922 PMCID: PMC8674996 DOI: 10.1021/acsomega.1c05000] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/09/2021] [Accepted: 11/16/2021] [Indexed: 06/14/2023]
Abstract
Nanoporous carbons (NPCs) are ideal materials for the dry process of flue gas desulfurization (FGD) due to their rich pore structure and high specific surface area. To study the effect of edge-functionalized NPCs on the physisorption mechanism of sulfur dioxide, different functional groups were embedded at the edge of NPCs, and the physisorption behavior was simulated using the grand canonical Monte Carlo method (GCMC) combined with density functional theory (DFT). The results indicated that the insertion of acidic oxygenous groups or basic nitrogenous groups into NPCs could enhance the physisorption of SO2. The influence of edge functionalization on the pore structure of NPCs is also analyzed. To further explore the interaction in the adsorption process, the van der Waals (vdW) interaction and electrostatic interaction between the SO2 molecule and the basic structural unit (BSU) were investigated. Simulated results showed that edge functionalization had limited influence on vdW interaction and did not significantly change the distribution characteristics of vdW interaction. According to the study on electrostatic interaction, edge functionalization was found to promote inhomogeneity of the surface charge of the adsorbent, enhance the polarity of the adsorbent, and thus enhance the physisorption capacity of SO2. More importantly, we provide an idea for studying the difference in adsorption capacity caused by different functional groups connected to carbon adsorbents.
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Affiliation(s)
- Ruyi Zhao
- School
of Energy Science and Engineering, Harbin
Institute of Technology, Harbin 150001, China
| | - Guodong Liu
- School
of Energy Science and Engineering, Harbin
Institute of Technology, Harbin 150001, China
| | - Guohua Wei
- School
of Energy Science and Engineering, Harbin
Institute of Technology, Harbin 150001, China
- State
Key Laboratory of Efficient and Clean Coal-Fired Utility Boiler (Harbin
Boiler Company Limited), Harbin 150046, China
- Harbin
Boiler Company Limited, Harbin 150046, China
| | - Jihui Gao
- School
of Energy Science and Engineering, Harbin
Institute of Technology, Harbin 150001, China
| | - Huilin Lu
- School
of Energy Science and Engineering, Harbin
Institute of Technology, Harbin 150001, China
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13
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Li J, Wang Y, Chen Z, Rahman SS. Insights into the Molecular Competitive Adsorption Mechanism of CH 4/CO 2 in a Kerogen Matrix in the Presence of Moisture, Salinity, and Ethane. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2021; 37:12732-12745. [PMID: 34668376 DOI: 10.1021/acs.langmuir.1c02274] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Carbon dioxide (CO2) injection in shale and coal seam gas reservoirs has become one of the most popular ways to promote methane (CH4) production. However, geological factors affecting the CO2 enhanced gas recovery (CO2-EGR) projects have not been studied in great depth, including underground moisture, subsurface water salinity, and other gases accompanying CH4. Thus, a hybrid methodology of molecular dynamics (MD) and grand canonical Monte Carlo (GCMC) simulation is employed to reveal the gas adsorption and displacement mechanisms at a fundamental molecular level. This study generates a type II-D kerogen matrix as the adsorbent. The simulation environment includes 0-5 wt % moisture content, 0-6 mol/L NaCl saline, and 0-5 wt % C2H6 for up to 30 MPa at 308, 338, and 368 K. The impressions of moisture, C2H6, and salinity on gas adsorption and competitive adsorption characteristics are analyzed and discussed. On the basis of the simulation results, the preloaded H2O molecules negatively influence CH4 adsorption, leading to a 44.9% reduction at 5 wt % moisture content. Additionally, 6 mol/L NaCl within 5 wt % moisture content exhibits a further 9.8% reduction on the basis of the moisture effect. C2H6 presents a more noticeable negative impact, of which 5 wt % results in a 73.2% reduction in CH4 adsorption. Moreover, the competitive process indicator, preferential selectivity SCO2/CH4, is analyzed and discussed in the presence of the mentioned factors. Moisture positively influences SCO2/CH4, salinity promotes SCO2/CH4, and C2H6 develops SCO2/CH4. These factors would encourage the displacement processes of CH4 by CO2 injection. This study provides essential information for better gas resource estimation and gas recovery improvement in unconventional systems.
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Affiliation(s)
- Jiawei Li
- School of Minerals and Energy Resources Engineering, University of New South Wales, Sydney 2052, Australia
| | - Yuzhu Wang
- Division of Physical Sciences and Engineering (PSE), King Abdullah University of Science and Technology (KAUST), Thuwal 23955-6900, Saudi Arabia
| | - Zhixi Chen
- School of Minerals and Energy Resources Engineering, University of New South Wales, Sydney 2052, Australia
| | - Sheikh S Rahman
- School of Minerals and Energy Resources Engineering, University of New South Wales, Sydney 2052, Australia
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14
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Biomass-based hierarchical porous carbon with ultrahigh surface area for super-efficient adsorption and separation of acetone and methanol. Sep Purif Technol 2021. [DOI: 10.1016/j.seppur.2021.118690] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
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15
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Interactions of dynamic supercritical CO2 fluid with different rank moisture-equilibrated coals: Implications for CO2 sequestration in coal seams. Chin J Chem Eng 2021. [DOI: 10.1016/j.cjche.2020.10.020] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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16
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Ma X, Su C, Liu B, Wu Q, Zhou K, Zeng Z, Li L. Heteroatom-doped porous carbons exhibit superior CO2 capture and CO2/N2 selectivity: Understanding the contribution of functional groups and pore structure. Sep Purif Technol 2021. [DOI: 10.1016/j.seppur.2020.118065] [Citation(s) in RCA: 29] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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17
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Guo F, Wang S, Feng Q, Yao X, Xue Q, Li X. Adsorption and absorption of supercritical methane within shale kerogen slit. J Mol Liq 2020. [DOI: 10.1016/j.molliq.2020.114364] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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18
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Sui H, Zhang F, Wang Z, Wang D, Wang Y. Effect of Kerogen Maturity, Water Content for Carbon Dioxide, Methane, and Their Mixture Adsorption and Diffusion in Kerogen: A Computational Investigation. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2020; 36:9756-9769. [PMID: 32787125 DOI: 10.1021/acs.langmuir.0c01191] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
The adsorption behavior of CO2, CH4, and CO2/CH4 mixtures in four different mature kerogens in the absence/presence of water was studied using grand canonical Monte Carlo and classical molecular dynamics methods. The results exhibit that the adsorption isotherms of single-component CO2 or CH4 in kerogen present similar trends and show type I Langmuir adsorption behavior according to the IUPAC classification; the total adsorbed amount of both gases follows the order of type II-A < type II-B < type II-C < type II-D kerogen under the same conditions. The changing behavior of isosteric heat decreases first and then increases, which can explain the heterogeneous characteristic of the kerogen pore surface. The Coulombic and van der Waals interactions between CO2 and kerogens play an important role on adsorption, while for CH4 adsorption, the electrostatic effect is very small, even negligible. The N-, S-, and O-containing groups in kerogen have more remarkable influence on adsorption of CO2 than CH4 because of their strong adsorption energy, therefore notably improving the selectivity of CO2 over CH4 and following the order of type II-A > type II-B > type II-C > type II-D, which is beneficial to carbon capture and storage. Both pressure and temperature have an obvious impact on gas molecule diffusion, and low pressure and high temperature correspond to a large diffusion coefficient. In addition, preabsorbed water has a negative effect on the adsorption of CO2/CH4, and for the same amount of water molecules, the effect follows the order of type II-A > type II-B > type II-C > type II-D kerogens. The binding energy of water-kerogen is stronger than that of pure CH4 or CO2-kerogen. The selectivity of CO2 over CH4 on kerogen increases with an increasing water content.
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Affiliation(s)
- Hongguang Sui
- College of Science, China University of Petroleum, Qingdao, Shandong 266580, China
| | - Fengyun Zhang
- College of Science, China University of Petroleum, Qingdao, Shandong 266580, China
| | - Ziqiang Wang
- Research Institute of Experiment and Detection of PetroChina Xinjiang Oilfield Company, Karamay 834000, China
| | - Diansheng Wang
- College of Science, China University of Petroleum, Qingdao, Shandong 266580, China
| | - Yudou Wang
- College of Science, China University of Petroleum, Qingdao, Shandong 266580, China
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Liu Y, Hou J. Selective adsorption of CO2/CH4 mixture on clay-rich shale using molecular simulations. J CO2 UTIL 2020. [DOI: 10.1016/j.jcou.2020.02.013] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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20
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Badmos SB, Islam N, Shah U, Striolo A, Cole DR. Competitive adsorption and reduced mobility: N-octane, CO2 and H2S in alumina and graphite pores. Mol Phys 2020. [DOI: 10.1080/00268976.2020.1781944] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
Affiliation(s)
- Sakiru B. Badmos
- Department of Chemical Engineering, University College London, London, UK
| | - Naimul Islam
- Department of Chemical Engineering, University College London, London, UK
| | - Urvi Shah
- Department of Chemical Engineering, University College London, London, UK
| | - Alberto Striolo
- Department of Chemical Engineering, University College London, London, UK
| | - David R. Cole
- School of Earth Sciences, The Ohio State University, Columbus, OH, USA
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21
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A Review on the Influence of CO2/Shale Interaction on Shale Properties: Implications of CCS in Shales. ENERGIES 2020. [DOI: 10.3390/en13123200] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Carbon capture and storage (CCS) is a developed technology to minimize CO2 emissions and reduce global climate change. Currently, shale gas formations are considered as a suitable target for CO2 sequestration projects predominantly due to their wide availability. Compared to conventional geological formations including saline aquifers and coal seams, depleted shale formations provide larger storage potential due to the high adsorption capacity of CO2 compared to methane in the shale formation. However, the injected CO2 causes possible geochemical interactions with the shale formation during storage applications and CO2 enhanced shale gas recovery (ESGR) processes. The CO2/shale interaction is a key factor for the efficiency of CO2 storage in shale formations, as it can significantly alter the shale properties. The formation of carbonic acid from CO2 dissolution is the main cause for the alterations in the physical, chemical and mechanical properties of the shale, which in return affects the storage capacity, pore properties, and fluid transport. Therefore, in this paper, the effect of CO2 exposure on shale properties is comprehensively reviewed, to gain an in-depth understanding of the impact of CO2/shale interaction on shale properties. This paper reviews the current knowledge of the CO2/shale interactions and describes the results achieved to date. The pore structure is one of the most affected properties by CO2/shale interactions; several scholars indicated that the differences in mineral composition for shales would result in wide variations in pore structure system. A noticeable reduction in specific surface area of shales was observed after CO2 treatment, which in the long-term could decrease CO2 adsorption capacity, affecting the CO2 storage efficiency. Other factors including shale sedimentary, pressure and temperature can also alter the pore system and decrease the shale “caprock” seal efficiency. Similarly, the alteration in shales’ surface chemistry and functional species after CO2 treatment may increase the adsorption capacity of CO2, impacting the overall storage potential in shales. Furthermore, the injection of CO2 into shales may also influence the wetting behavior. Surface wettability is mainly affected by the presented minerals in shale, and less affected by brine salinity, temperature, organic content, and thermal maturity. Mainly, shales have strong water-wetting behavior in the presence of hydrocarbons, however, the alteration in shale’s wettability towards CO2-wet will significantly minimize CO2 storage capacities, and affect the sealing efficiency of caprock. The CO2/shale interactions were also found to cause noticeable degradation in shales’ mechanical properties. CO2 injection can weaken shale, decrease its brittleness and increases its plasticity and toughness. Various reductions in tri-axial compressive strength, tensile strength, and the elastic modulus of shales were observed after CO2 injection, due to the dissolution effect and adsorption strain within the pores. Based on this review, we conclude that CO2/shale interaction is a significant factor for the efficiency of CCS. However, due to the heterogeneity of shales, further studies are needed to include various shale formations and identify how different shales’ mineralogy could affect the CO2 storage capacity in the long-term.
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Effects of Supercritical CO2 Treatment Temperatures on Mineral Composition, Pore Structure and Functional Groups of Shale: Implications for CO2 Sequestration. SUSTAINABILITY 2020. [DOI: 10.3390/su12093927] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
Research on the physicochemical reactions between supercritical carbon dioxide (Sc-CO2) and shale at different temperature is essential for geological CO2 sequestration. In this paper, shale from the Longmaxi formation in Sichuan basin of China was collected to study the changes in mineral composition, pore structure, and organic functional groups treated with Sc-CO2 at fixed pressure 8 MPa and temperatures 40 °C to 80 °C. Samples were analyzed with x-ray diffraction, CO2/N2 gas adsorption, and Fourier transform infrared spectroscopy. The results show that the dissolution of clay minerals by Sc-CO2 first declined, but then increased when the temperature increased; dissolution reached a minimum at 60 °C. The specific surface area, total pore volume, predominant pore type (mesopores), and fractal dimension of the shale pore structure first increases and then decreases with increasing temperature. The destruction of hydroxyl structures by Sc-CO2 is related to the destruction of OH–N and ring hydroxyls. As the temperature increases, the hydroxyl destruction first increases and then decreases. The aromatic hydrocarbons are mainly dominated by 3H and 2H, and their abundances increase significantly as temperature increases, whereas the 4H shows a decreasing trend; the 1H abundance does not change appreciably. The relative abundances of aromatic and aliphatic hydrocarbons decrease linearly as the temperature increases. These research results provide theoretical support for the geological storage of Sc-CO2 in shale at different temperatures.
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23
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Renita AA, Sivasubramanian V. Application of computational chemistry for adsorption studies on metal–organic frameworks used for carbon capture. PHYSICAL SCIENCES REVIEWS 2020. [DOI: 10.1515/psr-2018-0179] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Abstract
Computational chemistry is invaluable in calculating macroscopic and microscopic details of systems application in chemical industries which are involved in carbon capture through precombustion, post-combustion and oxy combustion technologies. This review discusses the role of computational chemistry for adsorption studies of metal–organic frameworks (MOFs) which can be utilized for carbon capture. Principles of quantum mechanics–molecular mechanics are used to devise the electrostatic charges and isotherm parameters on the MOFs. MOFs for carbon capture which can be compatible and which can withstand the severity in chemical industries can be effectively studied using grand canonical Monte Carlo simulation by selecting appropriate force fields. Since flue gases contain a host of other gases in addition to oxides of carbon, capture by MOFs has to be carefully modelled and the software useful for this study are mentioned in this review. The simulated adsorption isotherms should be compared with experimental adsorption isotherms to validate the study. The adsorption model for carbon dioxide adsorption on MOFs is generally reported to be type I reversible isotherm and the kinetics is in good agreement with pseudo-second-order kinetics.
Graphical Abstract:
Graphical Abstract
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24
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Chen Z, Qiu H, Hong Z, Wang G. Molecular dynamics simulation of a lignite structure simplified model absorbing water. MOLECULAR SIMULATION 2019. [DOI: 10.1080/08927022.2019.1674851] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Affiliation(s)
- Zherui Chen
- School of Chemical Engineering and Technology, China University of Mining and Technology, Xuzhou, People’s Republic of China
| | - Hongxin Qiu
- School of Chemical Engineering and Technology, China University of Mining and Technology, Xuzhou, People’s Republic of China
| | - Zhixin Hong
- School of Chemical Engineering and Technology, China University of Mining and Technology, Xuzhou, People’s Republic of China
| | - Guanghui Wang
- School of Chemical Engineering and Technology, China University of Mining and Technology, Xuzhou, People’s Republic of China
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25
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Guo Y, Zeng Z, Li L, Su C, Chen R, Wang C, Zhou K, Xu X, Li H. Competitive Adsorption of Methanol-Acetone on Surface Functionalization (-COOH, -OH, -NH 2, and -SO 3H): Grand Canonical Monte Carlo and Density Functional Theory Simulations. ACS APPLIED MATERIALS & INTERFACES 2019; 11:34241-34250. [PMID: 31462036 DOI: 10.1021/acsami.9b10804] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
The capture and separation properties of surface-functionalized activated carbons (AC-Rs, R= -COOH, -OH, -NH2, and -SO3H) for the methanol-acetone mixture were investigated for the first time by grand canonical Monte Carlo simulation (GCMC) and density functional theory (DFT). The effects of surface functional groups and structural characteristics of AC-Rs on the adsorption and separation behaviors of methanol and acetone were clarified. The surface functional group with strong electron-donating or electron-accepting capacity (i.e., -NH2, -OH, and -SO3H) was a crucial factor for the methanol-acetone capture and separation performance at the lower pressure range, and the accessible surface area was found to be another determinative factor. AC-NH2 with the relatively large accessible surface area (4497 m2/g) exhibited an efficient capture performance for the single component (15.7 mol/kg for methanol and 6.7 mol/kg for acetone) and the highest methanol/acetone selectivity (∼23) at 0.02 kPa. At high pressures, the surface functionalization and available pore volume of AC-Rs played pivotal roles in the adsorptive separation process. This study provided mechanistic insights on how the surface functional groups affected the capture and separation properties of ACs, which would further provide a rational alternative strategy in the preparation and synthesis of ACs for the effective gas mixture separation.
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Affiliation(s)
- Yang Guo
- School of Energy Science and Engineering , Central South University , Changsha 410083 , Hunan , China
| | - Zheng Zeng
- School of Energy Science and Engineering , Central South University , Changsha 410083 , Hunan , China
| | - Liqing Li
- School of Energy Science and Engineering , Central South University , Changsha 410083 , Hunan , China
| | - Changqing Su
- School of Energy Science and Engineering , Central South University , Changsha 410083 , Hunan , China
| | - Ruofei Chen
- School of Energy Science and Engineering , Central South University , Changsha 410083 , Hunan , China
| | - Chunhao Wang
- School of Energy Science and Engineering , Central South University , Changsha 410083 , Hunan , China
| | - Ke Zhou
- School of Energy Science and Engineering , Central South University , Changsha 410083 , Hunan , China
| | - Xiang Xu
- School of Energy Science and Engineering , Central South University , Changsha 410083 , Hunan , China
| | - Hailong Li
- School of Energy Science and Engineering , Central South University , Changsha 410083 , Hunan , China
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26
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Berghe G, Kline S, Burket S, Bivens L, Johnson D, Singh R. Effect of CO2 and H2O on the behavior of shale gas confined inside calcite [104] slit-like nanopore: a molecular dynamics simulation study. J Mol Model 2019; 25:293. [DOI: 10.1007/s00894-019-4180-7] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2019] [Accepted: 08/20/2019] [Indexed: 11/24/2022]
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27
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Diao R, Zhang H, Zhao D, Li S. CH4 and CO2 adsorption-induced deformation of carbon slit pores with implications for CO2 sequestration and enhanced CH4 recovery. J CO2 UTIL 2019. [DOI: 10.1016/j.jcou.2019.03.018] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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28
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Vieillard J, Bouazizi N, Bargougui R, Fotsing PN, Thoumire O, Ladam G, Brun N, Hochepied JF, Woumfo ED, Mofaddel N, Derf FL, Azzouz A. Metal-inorganic-organic core–shell material as efficient matrices for CO2 adsorption: Synthesis, properties and kinetic studies. J Taiwan Inst Chem Eng 2019. [DOI: 10.1016/j.jtice.2018.08.020] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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29
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Abstract
A series of zeolite X/activated carbon (AC) composites were prepared from the same starting materials at various activation time. The corresponding modified samples were obtained by being treated with diluted NH4Cl solution. The relationship between porosity development, surface properties, and CH4/N2 adsorption performance was investigated. The increase of micropore volume is beneficial to the improvement of CH4 and N2 adsorption capacity, but more sensitive for CH4. In addition, the polar functional groups of zeolite X/AC composites may enhance CH4 adsorption capacity. More importantly, both developing micropore structure and surface modification contributed to enhance the adsorption selectivity αCH4/N2. As the optimum sample of these studies, HZAC(24) showed CH4 adsorption capacity of 17.3 cm3/g and the highest adsorption selectivity αCH4/N2 of 3.4. The CH4 and N2 adsorption isotherms of all samples can be well fitted by the Langmuir–Freundlich model. HZAC(24) showed an excellent cyclability of adsorption/desorption of CH4 with a neglectable capacity loss after subsequent cycles. Moreover, HZAC(24) displayed relatively rapid adsorption kinetics. These properties of zeolite X/AC composites are essential for the adsorptive separation of CH4 from N2 in the pressure swing adsorption (PSA) process.
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30
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Brasili J, Fox K, Badamo D, Berghe G, Khanal R, Singh R. Molecular dynamics simulation of shale gas confined inside slit-like calcite [104] nanopore. MOLECULAR SIMULATION 2018. [DOI: 10.1080/08927022.2018.1536295] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
Affiliation(s)
- Julie Brasili
- Department of Chemical Engineering, University of Pittsburgh at Johnstown, Johnstown, PA, USA
| | - Korrin Fox
- Department of Chemical Engineering, University of Pittsburgh at Johnstown, Johnstown, PA, USA
| | - David Badamo
- Department of Chemical Engineering, University of Pittsburgh at Johnstown, Johnstown, PA, USA
| | - Gabriel Berghe
- Department of Chemical Engineering, University of Pittsburgh at Johnstown, Johnstown, PA, USA
| | - Rajendra Khanal
- Department of Physics, University of Pittsburgh at Johnstown, Johnstown, PA, USA
| | - Ramesh Singh
- Department of Chemical Engineering, University of Pittsburgh at Johnstown, Johnstown, PA, USA
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31
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Li-modified nanoporous carbons for high-performance adsorption and separation of CO2 over N2: A combined DFT and GCMC computational study. J CO2 UTIL 2018. [DOI: 10.1016/j.jcou.2018.06.017] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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32
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Fu Q, Tanaka H, Miyahara MT, Qin Y, Shen Y, Zhang D. CHF3–CHClF2 Binary Competitive Adsorption Equilibria in Graphitic Slit Pores: Monte Carlo Simulations and Breakthrough Curve Experiments. Ind Eng Chem Res 2018. [DOI: 10.1021/acs.iecr.8b00141] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- Qiang Fu
- Collaborative Innovation Center of Chemical Science and Engineering, School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, China
| | - Hideki Tanaka
- Department of Chemical Engineering, Kyoto University, Katsura, Nishikyo, Kyoto 606-8501, Japan
| | - Minoru T. Miyahara
- Department of Chemical Engineering, Kyoto University, Katsura, Nishikyo, Kyoto 606-8501, Japan
| | - Yingjie Qin
- Collaborative Innovation Center of Chemical Science and Engineering, School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, China
| | - Yuanhui Shen
- Collaborative Innovation Center of Chemical Science and Engineering, School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, China
| | - Donghui Zhang
- Collaborative Innovation Center of Chemical Science and Engineering, School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, China
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33
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Sun H, Zhao H, Qi N, Li Y. Effects of Surface Composition on the Microbehaviors of CH 4 and CO 2 in Slit-Nanopores: A Simulation Exploration. ACS OMEGA 2017; 2:7600-7608. [PMID: 31457320 PMCID: PMC6645407 DOI: 10.1021/acsomega.7b01185] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/15/2017] [Accepted: 10/25/2017] [Indexed: 06/02/2023]
Abstract
Molecular dynamics simulation studies were employed to investigate the microscopic behaviors of CH4 and CO2 molecules in slit-nanopores (SNPs) with various surfaces and different compositions. Three kinds of SNPs were constructed by a pair-wise combination of graphene, silica, and the calcite surface. The grand canonical Monte Carlo and molecular dynamics simulation methods were used to investigate the adsorption and self-diffusion of the gases in the nanopores. It is found that in all three cases, the CH4 molecules prefer to adsorb onto the graphene surface, whereas the CO2 molecules prefer to adsorb onto the calcite surface. The adsorption intensity of gases adsorbed onto various surfaces, the adsorption distances, along with the details of adsorption orientations of CH4 and CO2 molecules on various surfaces are calculated. The surface characteristics, such as surface roughness and charge distribution, are analyzed to help understand the microscopic adsorption behaviors of the gases on the specific surface. It was found that competitive adsorptions of CO2 over CH4 broadly occurred, especially in the SNPs containing calcite, because of the strong adsorption interactions between the CO2 molecules and the calcite surface. This work provides the microbehaviors of CH4 and CO2 in SNPs with various surfaces in different compositions to provide useful guidance for better understanding about the microstate of gases in complex nanoporous shale formation and to give out useful guidance for enhancing shale gas recovery by injecting CO2.
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Affiliation(s)
| | | | | | - Ying Li
- E-mail: . Phone: (86) 0531-88362078 (Y.L.)
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34
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Wang S, Lu L, Wu D, Lu X. Biomethane storage in activated carbons: a grand canonical Monte Carlo simulation study. MOLECULAR SIMULATION 2017. [DOI: 10.1080/08927022.2017.1355551] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Affiliation(s)
- Shanshan Wang
- State Key Laboratory of Materials-Oriented Chemical Engineering, College of Chemical Engineering, Nanjing Tech University, Nanjing, P.R. China
| | - Linghong Lu
- State Key Laboratory of Materials-Oriented Chemical Engineering, College of Chemical Engineering, Nanjing Tech University, Nanjing, P.R. China
| | - Di Wu
- State Key Laboratory of Materials-Oriented Chemical Engineering, College of Chemical Engineering, Nanjing Tech University, Nanjing, P.R. China
| | - Xiaohua Lu
- State Key Laboratory of Materials-Oriented Chemical Engineering, College of Chemical Engineering, Nanjing Tech University, Nanjing, P.R. China
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35
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Sun H, Zhao H, Qi N, Qi X, Zhang K, Li Y. Molecular insight into the micro-behaviors of CH4 and CO2 in montmorillonite slit-nanopores. MOLECULAR SIMULATION 2017. [DOI: 10.1080/08927022.2017.1328553] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Affiliation(s)
- Haoyang Sun
- Key Laboratory of Colloid and Interface Chemistry of State Education Ministry, Shandong University, Jinan, P.R. China
| | - Hui Zhao
- Key Laboratory of Colloid and Interface Chemistry of State Education Ministry, Shandong University, Jinan, P.R. China
| | - Na Qi
- Key Laboratory of Colloid and Interface Chemistry of State Education Ministry, Shandong University, Jinan, P.R. China
| | - Xiaoqing Qi
- Key Laboratory of Colloid and Interface Chemistry of State Education Ministry, Shandong University, Jinan, P.R. China
| | - Kai Zhang
- Key Laboratory of Colloid and Interface Chemistry of State Education Ministry, Shandong University, Jinan, P.R. China
| | - Ying Li
- Key Laboratory of Colloid and Interface Chemistry of State Education Ministry, Shandong University, Jinan, P.R. China
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36
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Edge-Functionalized Graphene Nanoribbon Frameworks for the Capture and Separation of Greenhouse Gases. Macromolecules 2017. [DOI: 10.1021/acs.macromol.6b02483] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
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37
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Lee JH, Lee HJ, Choi JW. Unveiling anomalous CO2-to-N2 selectivity of graphene oxide. Phys Chem Chem Phys 2017; 19:22743-22748. [DOI: 10.1039/c7cp04318j] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Graphene oxide (GO) exhibits anomalous increase in CO2-to-N2 selectivity with temperature rise utilizing CO2-philic functional groups and large macropores.
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Affiliation(s)
- Ji Hoon Lee
- Graduate School of Energy, Environment, Water, and Sustainability (EEWS) and KAIST Institute NanoCentury
- Korea Advanced Institute of Science and Technology (KAIST)
- Daejeon 34141
- Republic of Korea
| | - Hyeon Jeong Lee
- Graduate School of Energy, Environment, Water, and Sustainability (EEWS) and KAIST Institute NanoCentury
- Korea Advanced Institute of Science and Technology (KAIST)
- Daejeon 34141
- Republic of Korea
| | - Jang Wook Choi
- Graduate School of Energy, Environment, Water, and Sustainability (EEWS) and KAIST Institute NanoCentury
- Korea Advanced Institute of Science and Technology (KAIST)
- Daejeon 34141
- Republic of Korea
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38
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Methane storage in nanoporous material at supercritical temperature over a wide range of pressures. Sci Rep 2016; 6:33461. [PMID: 27628747 PMCID: PMC5024135 DOI: 10.1038/srep33461] [Citation(s) in RCA: 61] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2016] [Accepted: 08/26/2016] [Indexed: 01/09/2023] Open
Abstract
The methane storage behavior in nanoporous material is significantly different from that of a bulk phase, and has a fundamental role in methane extraction from shale and its storage for vehicular applications. Here we show that the behavior and mechanisms of the methane storage are mainly dominated by the ratio of the interaction between methane molecules and nanopores walls to the methane intermolecular interaction, and a geometric constraint. By linking the macroscopic properties of the methane storage to the microscopic properties of a system of methane molecules-nanopores walls, we develop an equation of state for methane at supercritical temperature over a wide range of pressures. Molecular dynamic simulation data demonstrates that this equation is able to relate very well the methane storage behavior with each of the key physical parameters, including a pore size and shape and wall chemistry and roughness. Moreover, this equation only requires one fitted parameter, and is simple, reliable and powerful in application.
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39
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Zhou S, Lu X, Wu Z, Jin D, Guo C, Wang M, Wei S. Diffusion and separation of CH4/N2 in pillared graphene nanomaterials: A molecular dynamics investigation. Chem Phys Lett 2016. [DOI: 10.1016/j.cplett.2016.08.044] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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40
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Wang S, Lu L, Lu X, Cao W, Zhu Y. Adsorption of binary CO 2/CH 4mixtures using carbon nanotubes: Effects of confinement and surface functionalization. SEP SCI TECHNOL 2016. [DOI: 10.1080/01496395.2016.1150296] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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41
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Sun H, Zhao H, Qi N, Qi X, Zhang K, Sun W, Li Y. Mechanistic insight into the displacement of CH4 by CO2 in calcite slit nanopores: the effect of competitive adsorption. RSC Adv 2016. [DOI: 10.1039/c6ra23456a] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023] Open
Abstract
Displacement of residual CH4 by CO2 in calcite slit nanopores owing to the competitive adsorption of CO2 over CH4.
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Affiliation(s)
- Haoyang Sun
- Key Laboratory of Colloid and Interface Chemistry of State Education Ministry
- Shandong University
- Jinan
- P. R. China
| | - Hui Zhao
- Key Laboratory of Colloid and Interface Chemistry of State Education Ministry
- Shandong University
- Jinan
- P. R. China
| | - Na Qi
- Key Laboratory of Colloid and Interface Chemistry of State Education Ministry
- Shandong University
- Jinan
- P. R. China
| | - Xiaoqing Qi
- Key Laboratory of Colloid and Interface Chemistry of State Education Ministry
- Shandong University
- Jinan
- P. R. China
| | - Kai Zhang
- Key Laboratory of Colloid and Interface Chemistry of State Education Ministry
- Shandong University
- Jinan
- P. R. China
| | - Wenchao Sun
- School of Petroleum Engineering
- China University of Petroleum (East China)
- Qingdao
- P. R. China
| | - Ying Li
- Key Laboratory of Colloid and Interface Chemistry of State Education Ministry
- Shandong University
- Jinan
- P. R. China
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