1
|
Qi SC, Zhao YJ, Lu XJ, Liu YL, Sun Z, Liu XQ, Sun LB. Excitation generated preferential binding sites for ethane on porous carbon-copper porphyrin sorbents: ethane/ethylene adsorptive separation improved by light. Chem Sci 2024; 15:7285-7292. [PMID: 38756801 PMCID: PMC11095506 DOI: 10.1039/d4sc00898g] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2024] [Accepted: 04/12/2024] [Indexed: 05/18/2024] Open
Abstract
Energy-efficient separation of C2H6/C2H4 is a great challenge, for which adsorptive separation is very promising. C2H6-selective adsorption has big implications, while the design of C2H6-sorbents with ideal adsorption capability, particularly with the C2H6/C2H4-selectivity exceeded 2.0, is still challenging. Instead of the current strategies such as chemical modification or pore space modulation, we propose a new methodology for the design of C2H6-sorbents. With a Cu-TCPP [TCPP = 5,10,15,20-tetrakis(4-carboxyphenyl)porphyrin] framework dispersed onto a microporous carbon and a hierarchical-pore carbon, two composite sorbents are fabricated. The composite sorbents exhibit enhanced C2H6-selective adsorption capabilities with visible light, particularly the composite sorbent based on the hierarchical-pore carbon, whose C2H6 and C2H4 adsorption capacities (0 °C, 1 bar) are targetedly increased by 27% and only 1.8% with visible light, and therefore, an C2H6-selectivity (C2H6/C2H4 = 10/90, v/v) of 4.8 can be realized. With visible light, the adsorption force of the C2H6 molecule can be asymmetrically enhanced by the excitation enriched electron density over the adsorption sites formed via the close interaction between the Cu-TCPP and the carbon layer, whereas that of the C2H4 molecule is symmetrically altered and the forces cancelled each other out. This strategy may open up a new route for energy-efficient adsorptive separation of C2H6/C2H4 with light.
Collapse
Affiliation(s)
- Shi-Chao Qi
- State Key Laboratory of Materials-Oriented Chemical Engineering, Jiangsu National Synergetic Innovation Center for Advanced Materials (SICAM), College of Chemical Engineering, Nanjing Tech University 211816 Nanjing China
| | - Yun-Jie Zhao
- State Key Laboratory of Materials-Oriented Chemical Engineering, Jiangsu National Synergetic Innovation Center for Advanced Materials (SICAM), College of Chemical Engineering, Nanjing Tech University 211816 Nanjing China
| | - Xiao-Jie Lu
- State Key Laboratory of Materials-Oriented Chemical Engineering, Jiangsu National Synergetic Innovation Center for Advanced Materials (SICAM), College of Chemical Engineering, Nanjing Tech University 211816 Nanjing China
| | - Yong-Lan Liu
- State Key Laboratory of Materials-Oriented Chemical Engineering, Jiangsu National Synergetic Innovation Center for Advanced Materials (SICAM), College of Chemical Engineering, Nanjing Tech University 211816 Nanjing China
| | - Zhen Sun
- State Key Laboratory of Materials-Oriented Chemical Engineering, Jiangsu National Synergetic Innovation Center for Advanced Materials (SICAM), College of Chemical Engineering, Nanjing Tech University 211816 Nanjing China
| | - Xiao-Qin Liu
- State Key Laboratory of Materials-Oriented Chemical Engineering, Jiangsu National Synergetic Innovation Center for Advanced Materials (SICAM), College of Chemical Engineering, Nanjing Tech University 211816 Nanjing China
| | - Lin-Bing Sun
- State Key Laboratory of Materials-Oriented Chemical Engineering, Jiangsu National Synergetic Innovation Center for Advanced Materials (SICAM), College of Chemical Engineering, Nanjing Tech University 211816 Nanjing China
| |
Collapse
|
2
|
Batista M, Carvalho R, Pinto ML, Pires J. Novel Carbonaceous Adsorbents Prepared from Glycerin Waste and Dopamine for Gas Separation. Molecules 2023; 28:molecules28104071. [PMID: 37241812 DOI: 10.3390/molecules28104071] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2023] [Revised: 05/10/2023] [Accepted: 05/10/2023] [Indexed: 05/28/2023] Open
Abstract
Glycerin, a low-valued waste from biodiesel production, and dopamine were used as precursors for adsorbent materials. The study is centered on the preparation and application of microporous activated carbon as adsorbent materials in the separation of ethane/ethylene and of gases that are natural gas or landfill gas components (ethane/methane and carbon dioxide/methane). The activated carbons were produced by the following sequence reactions: facile carbonization of a glycerin/dopamine mixture and chemical activation. Dopamine allowed the introduction of nitrogenated groups that improved the selectivity of the separations. The activating agent was KOH, but its mass ratio was kept lower than one to improve the sustainability of the final materials. The solids were characterized by N2 adsorption/desorption isotherms, SEM, FTIR spectroscopy, elemental analysis, and point of zero charges (pHPZC). The order for adsorption of the different adsorbates (in mmolg-1) on the most well performing material-Gdop0.75-is methane (2.5) < carbon dioxide (5.0) < ethylene (8.6) < ethane (8.9).
Collapse
Affiliation(s)
- Mary Batista
- CQE, Centro de Química Estrutural, Institute of Molecular Sciences, Departamento de Química e Bioquímica, Faculdade de Ciências, Universidade de Lisboa, Campo Grande, 1749-016 Lisboa, Portugal
| | - Renato Carvalho
- IBEROL, Sociedade Ibérica de Biocombustíveis e Oleaginosas, S.A., 2600-531 Alhandra, Portugal
| | - Moisés L Pinto
- CERENA, Departamento de Engenharia Química, Instituto Superior Técnico, Universidade de Lisboa, 1049-001 Lisboa, Portugal
| | - João Pires
- CQE, Centro de Química Estrutural, Institute of Molecular Sciences, Departamento de Química e Bioquímica, Faculdade de Ciências, Universidade de Lisboa, Campo Grande, 1749-016 Lisboa, Portugal
| |
Collapse
|
3
|
Fu XP, Shen JW, Chen L, Zhong DX, Wang YL, Liu QY. Dicopper(II) paddle-wheel metal-organic frameworks for high propyne storage under ambient conditions. Chem Commun (Camb) 2023; 59:2263-2266. [PMID: 36728999 DOI: 10.1039/d2cc06684j] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Abstract
Fluorinated dicopper(II) metal-organic framework JXNU-16F with 1,3,5-tri(3,5-bifluoro-4-carboxyphenyl)benzene ligands and nonfluorinated JXNU-16 exhibit high propyne uptakes of 443 and 496 cm3 g-1 under ambient conditions, respectively. Their remarkable propyne uptakes result from suitable pore spaces and strong propyne⋯propyne interactions amongst the adsorbed propyne molecules, as revealed by computational simulations.
Collapse
Affiliation(s)
- Xing-Ping Fu
- College of Chemistry and Chemical Engineering, Key Lab of Fluorine and Silicon for Energy Materials and Chemistry of Ministry of Education, Jiangxi Normal University, Nanchang 330022, Jiangxi, P. R. China. .,Department of Ecological and Resources Engineering, Fujian Key Laboratory of Eco-industrial Green Technology, Wuyi University, Wuyishan 354300, Fujian, P. R. China
| | - Ji-Wei Shen
- College of Chemistry and Chemical Engineering, Key Lab of Fluorine and Silicon for Energy Materials and Chemistry of Ministry of Education, Jiangxi Normal University, Nanchang 330022, Jiangxi, P. R. China.
| | - Ling Chen
- College of Chemistry and Chemical Engineering, Key Lab of Fluorine and Silicon for Energy Materials and Chemistry of Ministry of Education, Jiangxi Normal University, Nanchang 330022, Jiangxi, P. R. China.
| | - De-Xin Zhong
- College of Chemistry and Chemical Engineering, Key Lab of Fluorine and Silicon for Energy Materials and Chemistry of Ministry of Education, Jiangxi Normal University, Nanchang 330022, Jiangxi, P. R. China.
| | - Yu-Ling Wang
- College of Chemistry and Chemical Engineering, Key Lab of Fluorine and Silicon for Energy Materials and Chemistry of Ministry of Education, Jiangxi Normal University, Nanchang 330022, Jiangxi, P. R. China.
| | - Qing-Yan Liu
- College of Chemistry and Chemical Engineering, Key Lab of Fluorine and Silicon for Energy Materials and Chemistry of Ministry of Education, Jiangxi Normal University, Nanchang 330022, Jiangxi, P. R. China.
| |
Collapse
|
4
|
Fang H, Zheng B, Zhang ZH, Jin PB, Li HX, Zheng YZ, Xue DX. Desolvation-Degree-Induced Structural Dynamics in a Rigid Cerium-Organic Framework Exhibiting Tandem Purification of Ethylene from Acetylene and Ethane. ACS APPLIED MATERIALS & INTERFACES 2022; 14:44460-44469. [PMID: 36125797 DOI: 10.1021/acsami.2c13500] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Due to the industrial requirements for high production and high quality of ethylene, efficient purification of ethylene from acetylene and ethane is of prime importance but challenging. Dynamic metal-organic frameworks (MOFs) have demonstrated intriguing structural dynamics and diverse applications recently. Among them, although a few flexible ones have exhibited interesting ethylene purification capability, rigid ones were yet barely investigated for such purpose. In this regard, a cerium(III)-based MOF was solvothermally synthesized, which is rigid and assembled from rod molecular building blocks associated with coordinative N,N-dimethylformamide (DMF) molecules. After liberating different degrees of DMF ligands via heating under vacuum or acetone exchange, both partially desolvated compounds of Ce-MOF-1 and Ce-MOF-2 were concertedly isolated in a fashion of single-crystal to single-crystal transformation. Although both newly generated materials crystallize in the same space group, they exhibit dissimilar unit cell parameters and slightly distinct ultramicropore sizes and pore microenvironments, thanks to the discrepancy in the desolvation degree. Consequently, Ce-MOF-1 and Ce-MOF-2 individually demonstrate C2H2- and C2H6-selective adsorption behavior, resulting in the potential tandem separation of C2H4 from C2H2 and C2H6 mixtures. The above results were successfully supported by not only single gas adsorption isotherms but also grand canonical Monte Carlo (GCMC) calculation studies and dynamic breakthrough experiments. The present work may pave the way for rigid MOFs aiming at advancing applications via solid-state structural dynamics.
Collapse
Affiliation(s)
- Han Fang
- Key Laboratory of Applied Surface and Colloid Chemistry, Ministry of Education, Xi'an Key Laboratory of Organometallic Material Chemistry, School of Chemistry & Chemical Engineering, Shaanxi Normal University, Xi'an 710062, China
| | - Bin Zheng
- School of Materials Science and Engineering, Xi'an University of Science and Technology, Xi'an 710054, China
| | - Zong-Hui Zhang
- Key Laboratory of Applied Surface and Colloid Chemistry, Ministry of Education, Xi'an Key Laboratory of Organometallic Material Chemistry, School of Chemistry & Chemical Engineering, Shaanxi Normal University, Xi'an 710062, China
| | - Peng-Bo Jin
- Frontier Institute of Science and Technology, State Key Laboratory for Mechanical Behavior of Materials, MOE Key Laboratory for Nonequilibrium Synthesis and Modulation of Condensed Matter, Xi'an Key Laboratory of Sustainable Energy and Materials Chemistry, School of Chemistry and School of Physics, Xi'an Jiaotong University, 99 Yanxiang Road, Xi'an 710054, Shaanxi, China
| | - Hong-Xin Li
- Key Laboratory of Applied Surface and Colloid Chemistry, Ministry of Education, Xi'an Key Laboratory of Organometallic Material Chemistry, School of Chemistry & Chemical Engineering, Shaanxi Normal University, Xi'an 710062, China
| | - Yan-Zhen Zheng
- Frontier Institute of Science and Technology, State Key Laboratory for Mechanical Behavior of Materials, MOE Key Laboratory for Nonequilibrium Synthesis and Modulation of Condensed Matter, Xi'an Key Laboratory of Sustainable Energy and Materials Chemistry, School of Chemistry and School of Physics, Xi'an Jiaotong University, 99 Yanxiang Road, Xi'an 710054, Shaanxi, China
| | - Dong-Xu Xue
- Key Laboratory of Applied Surface and Colloid Chemistry, Ministry of Education, Xi'an Key Laboratory of Organometallic Material Chemistry, School of Chemistry & Chemical Engineering, Shaanxi Normal University, Xi'an 710062, China
| |
Collapse
|
5
|
Anwar F, Khaleel M, Wang K, Karanikolos GN. Selectivity Tuning of Adsorbents for Ethane/Ethylene Separation: A Review. Ind Eng Chem Res 2022. [DOI: 10.1021/acs.iecr.2c02438] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Fahmi Anwar
- Department of Chemical Engineering, Khalifa University, P.O. Box 127788, 127788 Abu Dhabi, UAE
- Center for Catalysis and Separations (CeCaS), Khalifa University, P.O. Box 127788, 127788 Abu Dhabi, UAE
| | - Maryam Khaleel
- Department of Chemical Engineering, Khalifa University, P.O. Box 127788, 127788 Abu Dhabi, UAE
- Center for Catalysis and Separations (CeCaS), Khalifa University, P.O. Box 127788, 127788 Abu Dhabi, UAE
- Research and Innovation Center for CO2 and H2 (RICH), Khalifa University, P.O. Box 127788, 127788 Abu Dhabi, UAE
| | - Kean Wang
- Department of Chemical Engineering, Khalifa University, P.O. Box 127788, 127788 Abu Dhabi, UAE
- Center for Catalysis and Separations (CeCaS), Khalifa University, P.O. Box 127788, 127788 Abu Dhabi, UAE
| | - Georgios N. Karanikolos
- Department of Chemical Engineering, Khalifa University, P.O. Box 127788, 127788 Abu Dhabi, UAE
- Center for Catalysis and Separations (CeCaS), Khalifa University, P.O. Box 127788, 127788 Abu Dhabi, UAE
- Research and Innovation Center for CO2 and H2 (RICH), Khalifa University, P.O. Box 127788, 127788 Abu Dhabi, UAE
- Center for Membranes and Advanced Water Technology (CMAT), Khalifa University, P.O. Box 127788, 127788 Abu Dhabi, UAE
- Department of Chemical Engineering, University of Patras, 26500 Patras, Greece
| |
Collapse
|
6
|
Guo L, Savage M, Carter JH, Han X, da Silva I, Manuel P, Rudić S, Tang CC, Yang S, Schröder M. Direct Visualization of Supramolecular Binding and Separation of Light Hydrocarbons in MFM-300(In). CHEMISTRY OF MATERIALS : A PUBLICATION OF THE AMERICAN CHEMICAL SOCIETY 2022; 34:5698-5705. [PMID: 35782207 PMCID: PMC9245183 DOI: 10.1021/acs.chemmater.2c01097] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/11/2022] [Revised: 05/11/2022] [Indexed: 05/29/2023]
Abstract
The purification of light olefins is one of the most important chemical separations globally and consumes large amounts of energy. Porous materials have the capability to improve the efficiency of this process by acting as solid, regenerable adsorbents. However, to develop translational systems, the underlying mechanisms of adsorption in porous materials must be fully understood. Herein, we report the adsorption and dynamic separation of C2 and C3 hydrocarbons in the metal-organic framework MFM-300(In), which exhibits excellent performance in the separation of mixtures of ethane/ethylene and propyne/propylene. Unusually selective adsorption of ethane over ethylene at low pressure is observed, resulting in selective retention of ethane from a mixture of ethylene/ethane, thus demonstrating its potential for a one-step purification of ethylene (purity > 99.9%). In situ neutron powder diffraction and inelastic neutron scattering reveal the preferred adsorption domains and host-guest binding dynamics of adsorption of C2 and C3 hydrocarbons in MFM-300(In).
Collapse
Affiliation(s)
- Lixia Guo
- Department
of Chemistry, University of Manchester, Manchester M13 9PL, U.K.
| | - Mathew Savage
- Department
of Chemistry, University of Manchester, Manchester M13 9PL, U.K.
| | - Joe H. Carter
- Department
of Chemistry, University of Manchester, Manchester M13 9PL, U.K.
- Diamond
Light Source, Harwell Science and Innovation
Campus, Didcot OX11 0DE, U.K.
| | - Xue Han
- Department
of Chemistry, University of Manchester, Manchester M13 9PL, U.K.
| | - Ivan da Silva
- ISIS
Facility, STFC Rutherford Appleton Laboratory, Chilton OX11 0QX, Oxfordshire, U.K.
| | - Pascal Manuel
- ISIS
Facility, STFC Rutherford Appleton Laboratory, Chilton OX11 0QX, Oxfordshire, U.K.
| | - Svemir Rudić
- ISIS
Facility, STFC Rutherford Appleton Laboratory, Chilton OX11 0QX, Oxfordshire, U.K.
| | - Chiu C. Tang
- Diamond
Light Source, Harwell Science and Innovation
Campus, Didcot OX11 0DE, U.K.
| | - Sihai Yang
- Department
of Chemistry, University of Manchester, Manchester M13 9PL, U.K.
| | - Martin Schröder
- Department
of Chemistry, University of Manchester, Manchester M13 9PL, U.K.
| |
Collapse
|
7
|
Li J, Zhang B, Shu Y. Simulation of gas-solid adsorption process considering particle-size distribution. Chin J Chem Eng 2022. [DOI: 10.1016/j.cjche.2022.02.021] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
|
8
|
Xiao Y, Chu Y, Li S, Xu J, Deng F. Preferential adsorption sites for propane/propylene separation on ZIF-8 as revealed by solid-state NMR spectroscopy. Phys Chem Chem Phys 2022; 24:6535-6543. [PMID: 35258049 DOI: 10.1039/d1cp05931a] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Solid-state NMR spectroscopy in conjunction with theoretical calculation was employed to investigate the adsorbent-adsorbate host-guest interactions during propane/propylene separation on ZIF-8. 1H NMR chemical shifts of free gaseous and adsorbed propane/propylene are unambiguously assigned with the assistance of two-dimensional (2D) 1H-1H correlation spectroscopy (COSY) MAS NMR spectra. Meanwhile, the adsorption selectivity for propane/propylene mixtures on ZIF-8 at a pressure in range of 1.9-9.6 bar is quantitatively determined using 1H MAS NMR experiments, which agreed well with the ideal adsorbed solution theory (IAST) predictions. The preferential adsorption of propane compared with propylene on ZIF-8 is directly visualized from the 2D 1H-1H spin diffusion homo-nuclear correlation (HOMCOR) MAS NMR spectroscopy. Moreover, the preferential adsorption sites for propane and propylene are deduced from the 1H-1H spin diffusion buildup curves, which is further confirmed by DFT theoretical calculations. This work provides insights to understand the structure-property relationship during the propane/propylene separation on ZIF-8 as adsorbent.
Collapse
Affiliation(s)
- Yuqing Xiao
- State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics, National Center for Magnetic Resonance in Wuhan, Wuhan Institute of Physics and Mathematics, Innovation Academy for Precision Measurement Science and Technology, Chinese Academy of Sciences, Wuhan 430071, P. R. China. .,University of Chinese Academy of Sciences, Beijing 100049, P. R. China
| | - Yueying Chu
- State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics, National Center for Magnetic Resonance in Wuhan, Wuhan Institute of Physics and Mathematics, Innovation Academy for Precision Measurement Science and Technology, Chinese Academy of Sciences, Wuhan 430071, P. R. China.
| | - Shenhui Li
- State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics, National Center for Magnetic Resonance in Wuhan, Wuhan Institute of Physics and Mathematics, Innovation Academy for Precision Measurement Science and Technology, Chinese Academy of Sciences, Wuhan 430071, P. R. China.
| | - Jun Xu
- State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics, National Center for Magnetic Resonance in Wuhan, Wuhan Institute of Physics and Mathematics, Innovation Academy for Precision Measurement Science and Technology, Chinese Academy of Sciences, Wuhan 430071, P. R. China.
| | - Feng Deng
- State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics, National Center for Magnetic Resonance in Wuhan, Wuhan Institute of Physics and Mathematics, Innovation Academy for Precision Measurement Science and Technology, Chinese Academy of Sciences, Wuhan 430071, P. R. China. .,University of Chinese Academy of Sciences, Beijing 100049, P. R. China
| |
Collapse
|
9
|
He C, Krishna R, Chen Y, Yang J, Li J, Li L. Ultrafine tuning of the pore size in zeolite A for efficient propyne removal from propylene. Chin J Chem Eng 2021. [DOI: 10.1016/j.cjche.2020.11.037] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
|
10
|
Nag S, Ananthakrishna G, Maiti PK, Subramanian Y. High purity separation of n-pentane from neopentane using a nano-crystal of zeolite Y. J Chem Phys 2021; 155:014702. [PMID: 34241398 DOI: 10.1063/5.0053081] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022] Open
Abstract
A method for the separation of a mixture of n-pentane and neopentane using a nano-crystallite of zeolite Y is reported. This method judiciously combines two well-known, counter-intuitive phenomena, the levitation and the blowtorch effects. The result is that the two components are separated by being driven to the opposite ends of the zeolite column. The calculations are based on the non-equilibrium Monte Carlo method with moves from a region at one temperature to a region at another temperature. The necessary acceptance probability for such moves has been derived here on the basis of stationary solution of an inhomogeneous Fokker-Planck equation. Simulations have been carried out with a realistic and experimentally relevant Gaussian hot zone and also a square hot zone, both of which lead to very good separation. Simulations without the hot zones do not show any separation. The results are reported at a loading of 1 molecule per cage. The temperature of the hot zone is just ∼30 K higher than the ambient temperature. The separation factors of the order of 1017 are achieved using single crystals of zeolite, which are less than 1 μm long. The conditions for including the hot zone may be experimentally realizable in the future considering the rapid advances in nanoscale thermometry. The separation process is likely to be energetically more efficient by several orders of magnitude as compared to the existing methods of separation, making the method very green.
Collapse
Affiliation(s)
- Shubhadeep Nag
- Solid State and Structural Chemistry Unit, Indian Institute of Science, Bangalore 560 012, India
| | - G Ananthakrishna
- Materials Research Center, Indian Institute of Science, Bangalore 560 012, India
| | - Prabal K Maiti
- Department of Physics, Indian Institute of Science, Bangalore 560 012, India
| | - Yashonath Subramanian
- Solid State and Structural Chemistry Unit, Indian Institute of Science, Bangalore 560 012, India
| |
Collapse
|
11
|
Solanki VA, Borah B. In-silico identification of adsorbent for separation of ethane/ethylene mixture. J Mol Model 2020; 26:353. [PMID: 33242178 DOI: 10.1007/s00894-020-04612-0] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2020] [Accepted: 11/16/2020] [Indexed: 11/25/2022]
Abstract
We present here a high-throughput computational screening of 4,821 real metal-organic framework (MOF) structures that do not contain any open metal sites to isolate the best performing candidate for separation of ethane/ethylene mixture at ambient conditions. The MOF structures were assessed on the basis of several adsorption-based separation performance metrics. Some of these metrics were found to correlate strongly among themselves. We have presented various structures-property correlations which unfold useful insights. MOF ATAGEJ is found to be the top performing MOF with highest adsorbent performance score 12.38 mol/kg and regenerability 93.88%. Several other MOFs OTOLIU (MIL-167), UMUMOG (UBMOF-8), and TOVGES (PCN-230) containing tetravalent metal cations such as Zr4+ and Ti4+ are found to be potential structures that are thermally, mechanically, and chemically stable and performs better than zeolites. Adsorption selectivity shows exponential correlation with difference of heat of adsorption of ethane and ethene at 0.1 bar and 298 K. We have also presented how various performance metrics correlate among themselves. These correlations unfold useful insights. Graphical abstract.
Collapse
Affiliation(s)
- Viral A Solanki
- P. D. Patel Institute of Applied Sciences, Charotar University of Science & Technology, Changa, Anand, Gujarat, 388421, India
| | - Bhaskarjyoti Borah
- P. D. Patel Institute of Applied Sciences, Charotar University of Science & Technology, Changa, Anand, Gujarat, 388421, India.
| |
Collapse
|