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Mulk WU, Hassan Shah MU, Shah SN, Zhang QJ, Khan AL, Sheikh M, Younas M, Rezakazemi M. Enhancing CO 2 separation from N 2 mixtures using hydrophobic porous supports immobilized with tributyl-tetradecyl-phosphonium chloride [P 44414][Cl]. ENVIRONMENTAL RESEARCH 2023; 237:116879. [PMID: 37579965 DOI: 10.1016/j.envres.2023.116879] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/14/2023] [Revised: 07/29/2023] [Accepted: 08/11/2023] [Indexed: 08/16/2023]
Abstract
The main obstacles in adopting solvent-based CO2 capture technology from power plant flue gases at the industrial scale are the energy requirements for solvent regeneration and their toxicity. These challenges can be overcome using new green and more stable ionic liquids (ILs) as solvents for post-combustion CO2 capture. In the current study, tributyl-tetradecyl-phosphonium chloride [P44414][Cl] as an IL, was immobilized on hydrophobic porous supports of polypropylene (PP), polyvinylidene fluoride (PVDF), and polytetrafluoroethylene (PTFE) at 298 ± 3 K and pressures up to 2 bar. The surface morphology indicated homogenous immobilization of the IL on the membrane support. Supported ionic liquid membranes (SILMs) were tested for CO2 permeability and CO2/N2 selectivity. None of the SILMs exhibited IL leaching up to 2 bar. The PTFE-based SILM performed better than other supports with minimum loss in water contact angle (WCA) and achieved good antiwetting with a maximum CO2 permeability and selectivity over N2 of 2300 ± 139 Barrer and 31.60 ± 2.4, respectively. This work achieves CO2 permeability about two-fold more than other works having CO2/N2 selectivity range of 25-35 in similar SILMs. The diffusivity of CO2 and N2 in [P44414][Cl] was measured as 3.64 ± 0.18 and 2.01 ± 0.09 [10-8 cm2 s-1] and CO2 and N2 solubility values were 9.79 ± 0.47 and 0.19 ± 0.001 [10-2 cm3(STP) cm-3 cmHg-1], respectively. The high values of Young's modulus and tensile strength of the PTFE support-based SILM (234 ± 12 MPa and 6.07 ± 0.31 MPa, respectively) indicated the long-term application of SILM in flue gas separation. The results indicated phosphonium chloride-based ILs could be better solvent candidates for CO2 removal from large volumes of flue gases than amine-based ILs.
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Affiliation(s)
- Waqad Ul Mulk
- Department of Mechanical Engineering, Faculty of Mechanical and Aeronautical Engineering, University of Engineering and Technology, Taxila, 47080, Rawalpindi, Pakistan; Department of Mechanical Engineering, Universiti Teknologi Petronas, 32610 Bandar Seri Iskandar, Perak Darul Ridzuan, Malaysia
| | - Mansoor Ul Hassan Shah
- Department of Chemical Engineering, Faculty of Mechanical, Chemical, and Industrial Engineering, University of Engineering and Technology, Peshawar, 25120, Pakistan
| | - Syed Nasir Shah
- Research & Development Centre, Dubai Electricity and Water Authority (DEWA), P.O. Box 564, Dubai, United Arab Emirates
| | - Qi-Jun Zhang
- CAS Key Laboratory of Urban Pollutant Conversion, Institute of Urban Environment, Chinese Academy of Sciences, 1799 Jimei Road, Xiamen, 361021, China
| | - Asim Laeeq Khan
- Department of Chemical Engineering, COMSATS University Islamabad, Lahore Campus, Pakistan
| | - Mahdi Sheikh
- Chemical Engineering Department, Escola D'Enginyeria de Barcelona Est (EEBE), Universitat Politécnica de Catalunya (UPC)-BarcelonaTECH, C/ Eduard Maristany 10-14, Campus Diagonal-Besós, 08930 Barcelona, Spain
| | - Mohammad Younas
- Department of Chemical Engineering, Faculty of Mechanical, Chemical, and Industrial Engineering, University of Engineering and Technology, Peshawar, 25120, Pakistan; CAS Key Laboratory of Urban Pollutant Conversion, Institute of Urban Environment, Chinese Academy of Sciences, 1799 Jimei Road, Xiamen, 361021, China.
| | - Mashallah Rezakazemi
- Faculty of Chemical and Materials Engineering, Shahrood University of Technology, Shahrood, Iran.
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Mulk WU, Ali SA, Shah SN, Shah MUH, Zhang QJ, Younas M, Fatehizadeh A, Sheikh M, Rezakazemi M. Breaking boundaries in CO2 capture: Ionic liquid-based membrane separation for post-combustion applications. J CO2 UTIL 2023; 75:102555. [DOI: 10.1016/j.jcou.2023.102555] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/21/2023]
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3
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Li W, Musa DAR, Ahmad N, Adil M, Altimari US, Ibrahim AK, Alshehri AM, Riyahi Y, Jaber AS, Kadhim SI, Rushchitc AA, Aljuaid MO. Comprehensive review on the efficiency of ionic liquid materials for membrane separation and environmental applications. CHEMOSPHERE 2023; 332:138826. [PMID: 37150454 DOI: 10.1016/j.chemosphere.2023.138826] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/01/2023] [Revised: 04/19/2023] [Accepted: 04/29/2023] [Indexed: 05/09/2023]
Abstract
In the current twenty years, industrial applications of ionic liquids (ILs) have been of paramount attention due to their indisputable positive characteristics like negligible volatility and chemical/thermal stability. These brilliant advantages open new horizons towards environmentally friendly application of ILs in several industrial activities like membrane-based CO2 separation, electrolyte, bioprocessing, targeted drug delivery and solar panels. The principal intention of this article is to prepare a comprehensive review on the potential efficiency of IL-based absorbents to separate CO2 acidic contaminant from industrial gaseous streams compared to alkanolamine absorbents as the benchmark. For this purpose, a techno-economic evaluation is presented to compare the cost-effectiveness of ILs compared to alkanolamine absorbents. Finally, major environmental impacts of the ILs applications in industries are discussed and future perspectives towards solving the operational challenges are presented in detail.
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Affiliation(s)
- Weidong Li
- Hangzhou Normal University Qianjiang College, Zhejiang, Hangzhou, 310018, China; School of Engineering, Hangzhou Normal University, Zhejiang, Hangzhou, 310018, China.
| | - Duaa Abdul Rida Musa
- Chemical Engineering and Petroleum Industries Department, Al-Mustaqbal University College, 51001, Hilla, Babil, Iraq
| | - Nafis Ahmad
- Department of Physics, College of Science, King Khalid University, P.O. Box: 960, Abha, 61421, Kingdom of Saudi Arabia.
| | - Mohaned Adil
- College of Pharmacy, Al-Farahidi University, Iraq
| | - Usama S Altimari
- Department of Medical Laboratories Technology, AL-Nisour University College, Baghdad, Iraq
| | | | - A M Alshehri
- Department of Physics, College of Science, King Khalid University, P.O. Box: 960, Abha, 61421, Kingdom of Saudi Arabia
| | | | - Asala Salam Jaber
- Department of Medical Laboratories Technology, Mazaya University College, Iraq
| | - Sokaina Issa Kadhim
- Building and Construction Technical Engineering Department, College of Technical Engineering, The Islamic University, Najaf, Iraq
| | | | - Mutlaq Owaidh Aljuaid
- Material Management Department, Prince Mansour Military Hospital, Al Faisaliyah, Taif, Saudi Arabia
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Yee CY, Lim LG, Lock SSM, Jusoh N, Yiin CL, Chin BLF, Chan YH, Loy ACM, Mubashir M. A systematic review of the molecular simulation of hybrid membranes for performance enhancements and contaminant removals. CHEMOSPHERE 2022; 307:135844. [PMID: 35952794 DOI: 10.1016/j.chemosphere.2022.135844] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/23/2022] [Revised: 06/24/2022] [Accepted: 07/22/2022] [Indexed: 06/15/2023]
Abstract
Number of research on molecular simulation and design has emerged recently but there is currently a lack of review to present these studies in an organized manner to highlight the advances and feasibility. This paper aims to review the development, structural, physical properties and separation performance of hybrid membranes using molecular simulation approach. The hybrid membranes under review include ionic liquid membrane, mixed matrix membrane, and functionalized hybrid membrane for understanding of the transport mechanism of molecules through the different structures. The understanding of molecular interactions, and alteration of pore sizes and transport channels at atomistic level post incorporation of different components in hybrid membranes posing impact to the selective transport of desired molecules are also covered. Incorporation of molecular simulation of hybrid membrane in related fields such as carbon dioxide (CO2) removal, wastewater treatment, and desalination are also reviewed. Despite the limitations of current molecular simulation methodologies, i.e., not being able to simulate the membrane operation at the actual macroscale in processing plants, it is still able to demonstrate promising results in capturing molecule behaviours of penetrants and membranes at full atomic details with acceptable separation performance accuracy. From the review, it was found that the best performing ionic liquid membrane, mixed matrix membrane and functionalized hybrid membrane can enhance the performance of pristine membrane by 4 folds, 2.9 folds and 3.3 folds, respectively. The future prospects of molecular simulation in hybrid membranes are also presented. This review could provide understanding to the current advancement of molecular simulation approach in hybrid membranes separation. This could also provide a guideline to apply molecular simulation in the related sectors.
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Affiliation(s)
- Cia Yin Yee
- CO(2) Research Center (CO2RES), Department of Chemical Engineering, Universiti Teknologi PETRONAS, 32610, Seri Iskandar, Perak, Malaysia
| | - Lam Ghai Lim
- School of Engineering, Monash University Malaysia, 47500, Bandar Sunway, Selangor, Malaysia
| | - Serene Sow Mun Lock
- CO(2) Research Center (CO2RES), Department of Chemical Engineering, Universiti Teknologi PETRONAS, 32610, Seri Iskandar, Perak, Malaysia.
| | - Norwahyu Jusoh
- CO(2) Research Center (CO2RES), Department of Chemical Engineering, Universiti Teknologi PETRONAS, 32610, Seri Iskandar, Perak, Malaysia
| | - Chung Loong Yiin
- Department of Chemical Engineering and Energy Sustainability, Faculty of Engineering, Universiti Malaysia Sarawak (UNIMAS), Kota Samarahan, 94300, Malaysia; Institute of Sustainable and Renewable Energy (ISuRE), Universiti Malaysia Sarawak (UNIMAS), 94300, Kota Samarahan, Sarawak, Malaysia
| | - Bridgid Lai Fui Chin
- Department of Chemical and Energy Engineering, Faculty of Engineering and Science, Curtin University Malaysia, CDT 250, 98009, Miri Sarawak, Malaysia; Energy and Environment Research Cluster, Faculty of Engineering and Science, Curtin University Malaysia, CDT 250, 98009, Miri Sarawak, Malaysia
| | - Yi Herng Chan
- PETRONAS Research Sdn. Bhd. (PRSB), Lot 3288 & 3289, Off Jalan Ayer Itam, Kawasan Institusi Bangi, 43000, Kajang, Selangor, Malaysia
| | - Adrian Chun Minh Loy
- Department of Chemical Engineering, Monash University, Clayton, VIC, 3800, Australia
| | - Muhammad Mubashir
- Physical Science and Engineering Division, Advanced Membranes and Porous Materials Center, King Abdullah University of Science and Technology, Thuwal, Saudi Arabia
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Nasir Shah S, Shah MUH, Mutalib MI, Lethesh KC, Leveque JM, Ullah N, Suleman H. Ultrasonic-Assisted Extraction of Toxic Acidic Components from Acidic Oil Using 1,8-Diazobicyclo[5.4.0]undec-7-ene-Based Ionic Liquids. ACS OMEGA 2022; 7:27479-27489. [PMID: 35967072 PMCID: PMC9366975 DOI: 10.1021/acsomega.2c02514] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/22/2022] [Accepted: 07/08/2022] [Indexed: 06/15/2023]
Abstract
Ionic liquids (ILs) show remarkable performance in enhancing the naphthenic acid extraction efficiency and decreasing the extraction time. However, the ultrasonic-assisted IL-based extraction of naphthenic acid is merely addressed previously. Therefore, this study investigated the impact of essential ultrasonic parameters, including amplitude and time, on naphthenic acid extraction using different ILs, and the system was optimized for maximum extraction. The IL 1,8-diazobicyclo[5.4.0]-undec-7-ene (DBU) with thiocyanate anions revealed the highest efficiency in extracting naphthenic acid from a model oil (dodecane) at optimized conditions, and the experimental liquid-liquid equilibrium data were obtained at atmospheric pressure for the mixture of dodecane, [DBU], thiocyanate, and naphthenic acid. In addition, the influence of the chain length of the cation (hexyl, octyl, or decyl) on the extraction efficiency was also evaluated by determining the distribution coefficients, and the conductor-like screening model for real solvents (COSMO-RS) study was carried out at infinite dilution. It was found that [DBU-Dec] [SCN] gives the best extraction efficiency and has a distribution coefficient of 9.2707 and a performance index of 49.48. Based on these values, ILs can be ordered as follows: [DBU-Dec] [SCN] > [DBU-Oct][SCN] > [DBU-Hex][SCN] in the decreasing order of performance index 49.48, 41.58, and 28.13. Moreover, non-random two liquid and Margules thermodynamic models were employed to investigate the interaction parameters between the components. Both models showed excellent agreement with the experimental results and could successfully be used for ultrasonic-assisted IL extraction of naphthenic acid.
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Affiliation(s)
- Syed Nasir Shah
- Centre
of Research in Ionic Liquids, Universiti
Teknologi PETRONAS, Bandar Seri
Iskandar, Perak 32610, Malaysia
- Department
of Energy Engineering, Faculty of Mechanical and Aeronautical Engineering, University of Engineering and Technology Taxila, Rawalpindi 47080, Pakistan
| | - Mansoor Ul Hassan Shah
- Department
of Chemical Engineering, University of Engineering
and Technology, Peshawar 25120, Pakistan
| | | | | | - Jean-Marc Leveque
- LRP UMR 5520, Université de Savoie Mont-Blanc, Chambéry 73000, France
| | - Nehar Ullah
- Department
of Chemical Engineering, University of Engineering
and Technology, Peshawar 25120, Pakistan
| | - Humbul Suleman
- School
of Computing, Engineering and Digital Technologies, Teesside University, Middlesbrough TS1 3BX, U.K.
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6
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Lis H, Paszkiewicz M, Godlewska K, Maculewicz J, Kowalska D, Stepnowski P, Caban M. Ionic liquid-based functionalized materials for analytical chemistry. J Chromatogr A 2022; 1681:463460. [DOI: 10.1016/j.chroma.2022.463460] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2022] [Revised: 08/26/2022] [Accepted: 08/29/2022] [Indexed: 11/25/2022]
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7
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Wang Z, Yan F, Bai L, Zhang X, Liu X, Zhang X. Insight into CO2/CH4 separation performance in ionic liquids/polymer membrane from molecular dynamics simulation. J Mol Liq 2022. [DOI: 10.1016/j.molliq.2022.119119] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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8
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Jiang H, Bai L, Yang B, Zeng S, Dong H, Zhang X. The effect of protic ionic liquids incorporation on CO2 separation performance of Pebax-based membranes. Chin J Chem Eng 2022. [DOI: 10.1016/j.cjche.2022.02.006] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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9
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Ortiz-Albo P, Ferreira TJ, Martins CF, Alves V, Esteves IAAC, Cunha-Silva L, Kumakiri I, Crespo J, Neves LA. Impact of Ionic Liquid Structure and Loading on Gas Sorption and Permeation for ZIF-8-Based Composites and Mixed Matrix Membranes. MEMBRANES 2021; 12:13. [PMID: 35054541 PMCID: PMC8780584 DOI: 10.3390/membranes12010013] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/15/2021] [Revised: 12/16/2021] [Accepted: 12/20/2021] [Indexed: 11/16/2022]
Abstract
Carbon dioxide (CO2) capture has become of great importance for industrial processes due to the adverse environmental effects of gas emissions. Mixed matrix membranes (MMMs) have been studied as an alternative to traditional technologies, especially due to their potential to overcome the practical limitations of conventional polymeric and inorganic membranes. In this work, the effect of using different ionic liquids (ILs) with the stable metal-organic framework (MOF) ZIF-8 was evaluated. Several IL@ZIF-8 composites and IL@ZIF-8 MMMs were prepared to improve the selective CO2 sorption and permeation over other gases such as methane (CH4) and nitrogen (N2). Different ILs and two distinct loadings were prepared to study not only the effect of IL concentration, but also the impact of the IL structure and affinity towards a specific gas mixture separation. Single gas sorption studies showed an improvement in CO2/CH4 and CO2/N2 selectivities, compared with the ones for the pristine ZIF-8, increasing with IL loading. In addition, the prepared IL@ZIF-8 MMMs showed improved CO2 selective behavior and mechanical strength with respect to ZIF-8 MMMs, with a strong dependence on the intrinsic IL CO2 selectivity. Therefore, the selection of high affinity ILs can lead to the improvement of CO2 selective separation for IL@ZIF-8 MMMs.
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Affiliation(s)
- Paloma Ortiz-Albo
- LAQV/REQUIMTE, Department of Chemistry, NOVA School of Science and Technology, FCT NOVA, Universidade NOVA de Lisboa, 2829-516 Caparica, Portugal; (P.O.-A.); (T.J.F.); (I.A.A.C.E.); (J.C.)
| | - Tiago J. Ferreira
- LAQV/REQUIMTE, Department of Chemistry, NOVA School of Science and Technology, FCT NOVA, Universidade NOVA de Lisboa, 2829-516 Caparica, Portugal; (P.O.-A.); (T.J.F.); (I.A.A.C.E.); (J.C.)
| | - Carla F. Martins
- Low Carbon & Resource Efficiency, R&Di, Instituto de Soldadura e Qualidade, Av. Prof. Cavaco Silva 33, 2740-120 Oeiras, Portugal;
| | - Vitor Alves
- LEAF—Linking Landscape, Environment, Agriculture and Food—Research Center, Associated Laboratory TERRA, Instituto Superior de Agronomia, Universidade de Lisboa, Tapada da Ajuda, 1349-017 Lisboa, Portugal;
| | - Isabel A. A. C. Esteves
- LAQV/REQUIMTE, Department of Chemistry, NOVA School of Science and Technology, FCT NOVA, Universidade NOVA de Lisboa, 2829-516 Caparica, Portugal; (P.O.-A.); (T.J.F.); (I.A.A.C.E.); (J.C.)
| | - Luís Cunha-Silva
- LAQV/REQUIMTE, Department of Chemistry and Biochemistry, Faculty of Sciences, University of Porto, 4169-007 Porto, Portugal;
| | - Izumi Kumakiri
- Graduate School of Sciences and Technology for Innovation, Yamaguchi University, Ube 7558611, Japan;
| | - João Crespo
- LAQV/REQUIMTE, Department of Chemistry, NOVA School of Science and Technology, FCT NOVA, Universidade NOVA de Lisboa, 2829-516 Caparica, Portugal; (P.O.-A.); (T.J.F.); (I.A.A.C.E.); (J.C.)
| | - Luísa A. Neves
- LAQV/REQUIMTE, Department of Chemistry, NOVA School of Science and Technology, FCT NOVA, Universidade NOVA de Lisboa, 2829-516 Caparica, Portugal; (P.O.-A.); (T.J.F.); (I.A.A.C.E.); (J.C.)
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Efficient micropore sizes for carbon dioxide physisorption of pine cone-based carbonaceous materials at different temperatures. J CO2 UTIL 2021. [DOI: 10.1016/j.jcou.2021.101770] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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11
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Sood A, Thakur A, Ahuja SM. Recent advancements in ionic liquid based carbon capture technologies. CHEM ENG COMMUN 2021. [DOI: 10.1080/00986445.2021.1990886] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Affiliation(s)
- Akash Sood
- Research Laboratory-III, Department of Chemical Engineering, Sant Longowal Institute of Engineering and Technology, Longowal, Punjab, India
| | - Avinash Thakur
- Research Laboratory-III, Department of Chemical Engineering, Sant Longowal Institute of Engineering and Technology, Longowal, Punjab, India
| | - Sandeep Mohan Ahuja
- Research Laboratory-III, Department of Chemical Engineering, Sant Longowal Institute of Engineering and Technology, Longowal, Punjab, India
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Alent’ev AY, Volkov AV, Vorotyntsev IV, Maksimov AL, Yaroslavtsev AB. Membrane Technologies for Decarbonization. MEMBRANES AND MEMBRANE TECHNOLOGIES 2021. [DOI: 10.1134/s2517751621050024] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
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13
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Huo F, Ding J, Tong J, He H. Ionic liquid-air interface probed by sum frequency generation spectroscopy and molecular dynamics simulation: influence of alkyl chain length and anion volume. MOLECULAR SIMULATION 2021. [DOI: 10.1080/08927022.2021.1979539] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Affiliation(s)
- Feng Huo
- Beijing Key Laboratory of Ionic Liquids Clean Process, Institute of Process Engineering, Chinese Academy of Sciences, Beijing, People’s Republic of China
| | - Jian Ding
- Beijing Key Laboratory of Ionic Liquids Clean Process, Institute of Process Engineering, Chinese Academy of Sciences, Beijing, People’s Republic of China
- College of Chemical Engineering, China University of Petroleum, Beijing, People’s Republic of China
| | - Jiahuan Tong
- Beijing Key Laboratory of Ionic Liquids Clean Process, Institute of Process Engineering, Chinese Academy of Sciences, Beijing, People’s Republic of China
| | - Hongyan He
- Beijing Key Laboratory of Ionic Liquids Clean Process, Institute of Process Engineering, Chinese Academy of Sciences, Beijing, People’s Republic of China
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CO2 separation by mixed matrix membranes incorporated with carbon nanotubes: a review of morphological, mechanical, thermal and transport properties. BRAZILIAN JOURNAL OF CHEMICAL ENGINEERING 2021. [DOI: 10.1007/s43153-021-00165-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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15
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Sarkar R, Kundu TK. Density functional theory-based analyses on selective gas separation by β-PVDF-supported ionic liquid membranes. J Mol Graph Model 2021; 108:108004. [PMID: 34438240 DOI: 10.1016/j.jmgm.2021.108004] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2021] [Revised: 08/06/2021] [Accepted: 08/08/2021] [Indexed: 12/14/2022]
Abstract
Finding proper candidates for polymer-supported ionic liquid (IL)-based gas separating membranes is a challenge. The current article elucidates the quantum chemical perspective of the selective gas adsorption efficiency, from a mixture of CO2, CO, CH4, and H2, of α- and β-polyvinylidene fluoride (PVDF)-supported imidazolium- and pyridinium-based six ionic liquid membranes. Although IL-based membrane efficiency mainly depends on the gas solubility of ILs, IL/support binding and gas adsorption on the support material are also studied to describe the overall gas adsorption properties of the PVDF/IL complexes. β-PVDF exhibits better binding with the ILs, and better gas affinity, thus, qualified as a more suitable membrane component as compared to α-PVDF. Dispersion-corrected density functional calculations are performed to provide a detailed insight into the energetic interactions, nonbonding intermolecular interactions based on symmetry adapted perturbation theory (SAPT), natural bond orbitals (NBO), Bader's quantum theory of atoms in molecules (QTAIM), reduced density gradient (RDG), frontier orbital interactions, density of states (DOS), and thermochemical analyses of the gas-adsorbed systems. Gas molecules interact with the membrane components through weak hydrogen bonds and exhibit low interaction energies, indicating physisorption of the gases. Gas adsorption energies are more negative than the mutual interaction energies of the gas molecules, ensuring effective gas adsorption by the membrane components. All the β-PVDF/IL systems have shown the highest and lowest affinity for CO2 and H2, respectively, leading to effective separation of CO2 and H2 from the other gases.
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Affiliation(s)
- Ranjini Sarkar
- Department of Metallurgical and Materials Engineering, Indian Institute of Technology Kharagpur, Kharagpur, West Bengal, 721302, India.
| | - Tarun Kumar Kundu
- Department of Metallurgical and Materials Engineering, Indian Institute of Technology Kharagpur, Kharagpur, West Bengal, 721302, India.
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