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Hillman F, Wang K, Liang CZ, Seng DHL, Zhang S. Breaking The Permeance-Selectivity Tradeoff for Post-Combustion Carbon Capture: A Bio-Inspired Strategy to Form Ultrathin Hollow Fiber Membranes. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2023; 35:e2305463. [PMID: 37672561 DOI: 10.1002/adma.202305463] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/07/2023] [Revised: 08/24/2023] [Indexed: 09/08/2023]
Abstract
Thin film composite (TFC) hollow fiber membranes with ultrathin selective layer are desirable to maximize the gas permeance for practical applications. Herein, a bio-inspired strategy is proposed to fabricate sub-100-nm membranes via a tree-mimicking polymer network with amphipathic components featuring multifunctionalities. The hydrophobic polydimethylsiloxane (PDMS) brushes act as the roots that can strongly cling to the gutter layer, the PDMS crosslinkers function as the xylems to enable fast gas transport, and the hydrophilic ethylene-oxide moieties (brushes and mobile molecules) resemble tree leaves that selectively attract CO2 molecules. As a result, a ≈27 nm-thick selective layer can be attached to the hollow fiber-supported PDMS gutter layer through a simple dip-coating method without any modification. Furthermore, a CO2 permeance of ≈2700 GPU and a CO2 /N2 selectivity of ≈21 that is beyond the permeance-selectivity upper bound for hollow fiber membranes is achieved. This bio-inspired concept can potentially open the possibility of scalable hollow fiber membranes production for commercial applications in post-combustion carbon capture and beyond.
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Affiliation(s)
- Febrian Hillman
- Department of Chemical and Biomolecular Engineering, National University of Singapore, Singapore, 117576, Singapore
| | - Kaiyu Wang
- Department of Chemical and Biomolecular Engineering, National University of Singapore, Singapore, 117576, Singapore
| | - Can Zeng Liang
- Department of Chemical and Biomolecular Engineering, National University of Singapore, Singapore, 117576, Singapore
| | - Debbie Hwee Leng Seng
- Institute of Material Research and Engineering (IMRE), Agency for Science, Technology and Research (A*STAR), Singapore, 138634, Singapore
| | - Sui Zhang
- Department of Chemical and Biomolecular Engineering, National University of Singapore, Singapore, 117576, Singapore
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2
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Yerumbu N, Sahoo RK, Sivalingam M. Multiobjective optimization of membrane in hybrid cryogenic CO 2 separation process for coal-fired power plants. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2023; 30:108783-108801. [PMID: 37759050 DOI: 10.1007/s11356-023-29945-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/02/2023] [Accepted: 09/11/2023] [Indexed: 09/29/2023]
Abstract
Post-combustion carbon dioxide (CO2) capture is considered a potential method to mitigate CO2 emissions from fossil fuels burned in power plants. In recent years, combining two different methods of post-combustion CO2 capture such as membrane and cryogenic distillation has been explored for availing the advantages of each method. This study focuses on the optimization of membranes for developing the membrane-cryogenic distillation process. For this purpose, a process flow sheet is developed, and simulation with model components such as compressor, heat exchanger, turbo expander, and distillation column is carried out using Aspen Plus. A membrane model is developed using in-house MATLAB code, and optimization is done to achieve higher concentration and recovery of CO2 using the MOJAYA algorithm. The membrane model is coupled to Aspen Plus through component object model (COM) technology. In this investigation, a hollow fiber membrane is considered. The optimized specifications of membrane modules are length, number of hollow fibers, feed pressure, and permeate pressure which are 0.3 m, 100,000, 5.76 bar, and 0.1 bar, respectively. This analysis results in the purity and recovery of the process of 99.8 and 90%, respectively, and an energy penalty of around 1.74 MJ/kg of CO2. A comparison of other processes available in the literature reveals that the current study renders maximum purity and recovery with a minimum energy penalty.
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Affiliation(s)
- Nandakishora Yerumbu
- Department of Mechanical Engineering, National Institute of Technology, Rourkela, India.
| | - Ranjit Kumar Sahoo
- Department of Mechanical Engineering, National Institute of Technology, Rourkela, India
- Department of Mechanical Engineering, National Institute of Technology, Meghalaya, India
| | - Murugan Sivalingam
- Department of Mechanical Engineering, National Institute of Technology, Rourkela, India
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Wang L, Li Y, Pu L, Yang M, Lu H, Gu X, Wang X. Copolyimide membranes fabricated by nonsolvent-induced phase separation for helium extraction from natural gas. Sep Purif Technol 2023. [DOI: 10.1016/j.seppur.2023.123455] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/24/2023]
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Tanis I, Brown D, Neyertz S, Vaidya M, Ballaguet JP, Duval S, Bahamdan A. Single-gas and mixed-gas permeation of N 2/CH 4 in thermally-rearranged TR-PBO membranes and their 6FDA-bisAPAF polyimide precursor studied by molecular dynamics simulations. Phys Chem Chem Phys 2022; 24:18667-18683. [PMID: 35894847 DOI: 10.1039/d1cp05511a] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
High-performance polymers with polybenzoxazole (PBO) structures, formed via thermal rearrangement (TR) of aromatic polyimide precursors, have been developed for gas separation applications. The present work compares the transport of N2 and CH4 in a 6FDA-bisAPAF polyimide precursor and in its TR-PBO derivative using molecular dynamics (MD) simulations. The modelling closely mimicked the experimental approach by transforming a 6FDA-bisAPAF atomistic model into its corresponding TR-PBO structure via a specific algorithm. The densities and void spaces of both precursor and TR polymers were found to compare well to experimental data. An iterative technique was used to obtain the single-gas sorption isotherms of N2 and CH4 at 338.5 K in both polymers over a range of feed pressures up to and exceeding 65 bar. CH4 was systematically found to be more soluble than N2. Solubilities in both matrices were quite similar with those in TR-PBO being slightly higher due to its larger fraction of significant volume. Volume dilation analyses confirmed a higher resistance to plasticization for TR-PBO. Extended single-gas N2 and CH4 simulations and 2 : 1 binary CH4/N2 mixed-gas simulations were then conducted in both matrices at 338.5 K and at a pressure of ∼65 bar corresponding to natural gas processing conditions. Mixed-gas sorption was modelled using a modification of the aforementioned iterative method, which fixed the pressure and iterated to convergence the number of molecules of each type of penetrant. The gas diffusion coefficients were estimated using the Trajectory-Extending Kinetic Monte Carlo (TEKMC) procedure. As found experimentally, significantly higher diffusivities and permeabilities were observed in the TR polymer, which led to a slightly lower ideal N2/CH4 permselectivity for TR-PBO (∼2.6) when compared to its 6FDA-bisAPAF precursor (∼3.8). However, both models showed a reduced N2/CH4 separation efficiency under 2 : 1 binary CH4/N2 mixed-gas conditions bordering on the loss of selectivity. For 6FDA-bisAPAF, both permeabilities decreased in the mixed-gas case, but more for N2 than for CH4. For TR-PBO, the permeability of the faster N2 decreased while the permeability of the slower CH4 increased under mixed-gas conditions. This confirms that single-gas simulations are not sufficient for the prediction of the actual mixed-gas permselectivity behaviour in such polymers.
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Affiliation(s)
- Ioannis Tanis
- Univ. Grenoble Alpes, Univ. Savoie Mont Blanc, CNRS, Grenoble INP (Institute of Engineering and Management Univ. Grenoble Alpes), LEPMI, 38000 Grenoble, France.
| | - David Brown
- Univ. Grenoble Alpes, Univ. Savoie Mont Blanc, CNRS, Grenoble INP (Institute of Engineering and Management Univ. Grenoble Alpes), LEPMI, 38000 Grenoble, France.
| | - Sylvie Neyertz
- Univ. Grenoble Alpes, Univ. Savoie Mont Blanc, CNRS, Grenoble INP (Institute of Engineering and Management Univ. Grenoble Alpes), LEPMI, 38000 Grenoble, France.
| | - Milind Vaidya
- Saudi Aramco, Research & Development Center, Po. Box 62, Dhahran 31311, Saudi Arabia
| | - Jean-Pierre Ballaguet
- Saudi Aramco, Research & Development Center, Po. Box 62, Dhahran 31311, Saudi Arabia
| | - Sebastien Duval
- Saudi Aramco, Research & Development Center, Po. Box 62, Dhahran 31311, Saudi Arabia
| | - Ahmad Bahamdan
- Saudi Aramco, Research & Development Center, Po. Box 62, Dhahran 31311, Saudi Arabia
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Lau HS, Lau SK, Soh LS, Hong SU, Gok XY, Yi S, Yong WF. State-of-the-Art Organic- and Inorganic-Based Hollow Fiber Membranes in Liquid and Gas Applications: Looking Back and Beyond. MEMBRANES 2022; 12:539. [PMID: 35629866 PMCID: PMC9144028 DOI: 10.3390/membranes12050539] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/14/2022] [Revised: 05/19/2022] [Accepted: 05/20/2022] [Indexed: 11/16/2022]
Abstract
The aggravation of environmental problems such as water scarcity and air pollution has called upon the need for a sustainable solution globally. Membrane technology, owing to its simplicity, sustainability, and cost-effectiveness, has emerged as one of the favorable technologies for water and air purification. Among all of the membrane configurations, hollow fiber membranes hold promise due to their outstanding packing density and ease of module assembly. Herein, this review systematically outlines the fundamentals of hollow fiber membranes, which comprise the structural analyses and phase inversion mechanism. Furthermore, illustrations of the latest advances in the fabrication of organic, inorganic, and composite hollow fiber membranes are presented. Key findings on the utilization of hollow fiber membranes in microfiltration (MF), nanofiltration (NF), reverse osmosis (RO), forward osmosis (FO), pervaporation, gas and vapor separation, membrane distillation, and membrane contactor are also reported. Moreover, the applications in nuclear waste treatment and biomedical fields such as hemodialysis and drug delivery are emphasized. Subsequently, the emerging R&D areas, precisely on green fabrication and modification techniques as well as sustainable materials for hollow fiber membranes, are highlighted. Last but not least, this review offers invigorating perspectives on the future directions for the design of next-generation hollow fiber membranes for various applications. As such, the comprehensive and critical insights gained in this review are anticipated to provide a new research doorway to stimulate the future development and optimization of hollow fiber membranes.
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Affiliation(s)
- Hui Shen Lau
- School of Energy and Chemical Engineering, Xiamen University Malaysia, Sepang 43900, Selangor, Malaysia; (H.S.L.); (S.K.L.); (L.S.S.); (S.U.H.); (X.Y.G.)
| | - Siew Kei Lau
- School of Energy and Chemical Engineering, Xiamen University Malaysia, Sepang 43900, Selangor, Malaysia; (H.S.L.); (S.K.L.); (L.S.S.); (S.U.H.); (X.Y.G.)
| | - Leong Sing Soh
- School of Energy and Chemical Engineering, Xiamen University Malaysia, Sepang 43900, Selangor, Malaysia; (H.S.L.); (S.K.L.); (L.S.S.); (S.U.H.); (X.Y.G.)
| | - Seang Uyin Hong
- School of Energy and Chemical Engineering, Xiamen University Malaysia, Sepang 43900, Selangor, Malaysia; (H.S.L.); (S.K.L.); (L.S.S.); (S.U.H.); (X.Y.G.)
| | - Xie Yuen Gok
- School of Energy and Chemical Engineering, Xiamen University Malaysia, Sepang 43900, Selangor, Malaysia; (H.S.L.); (S.K.L.); (L.S.S.); (S.U.H.); (X.Y.G.)
| | - Shouliang Yi
- U.S. Department of Energy, National Energy Technology Laboratory, 626 Cochrans Mill Rd, Pittsburgh, PA 15236, USA;
| | - Wai Fen Yong
- School of Energy and Chemical Engineering, Xiamen University Malaysia, Sepang 43900, Selangor, Malaysia; (H.S.L.); (S.K.L.); (L.S.S.); (S.U.H.); (X.Y.G.)
- College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, China
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Jia P, Liu J, Kong J, Hu M, Qi N, Chen Z, Xu S, Li N. Tailoring the micropore structure of 6FDA-based polyimide membrane for gas permselectivity studied by positron annihilation. Sep Purif Technol 2022. [DOI: 10.1016/j.seppur.2021.120044] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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7
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Lu Y, Hu X, Lee WH, Bae JY, Zhao J, Nie W, Wang Z, Yan J, Lee YM. Effects of bulky 2,2′-substituents in dianhydrides on the microstructures and gas transport properties of thermally rearranged polybenzoxazoles. J Memb Sci 2021. [DOI: 10.1016/j.memsci.2021.119777] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Alentiev AY, Ryzhikh VE, Belov NA. Polymer Materials for Membrane Separation of Gas Mixtures Containing CO2. POLYMER SCIENCE SERIES C 2021. [DOI: 10.1134/s1811238221020016] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
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10
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Ye L, Jie X, Wang L, Xu G, Sun Y, Kang G, Cao Y. Preparation and gas separation performance of thermally rearranged poly(benzoxazole-co-amide) (TR-PBOA) hollow fiber membranes deriving from polyamides. Sep Purif Technol 2021. [DOI: 10.1016/j.seppur.2020.117870] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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Hafeez S, Safdar T, Pallari E, Manos G, Aristodemou E, Zhang Z, Al-Salem SM, Constantinou A. CO2 capture using membrane contactors: a systematic literature review. Front Chem Sci Eng 2020. [DOI: 10.1007/s11705-020-1992-z] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
AbstractWith fossil fuel being the major source of energy, CO2 emission levels need to be reduced to a minimal amount namely from anthropogenic sources. Energy consumption is expected to rise by 48% in the next 30 years, and global warming is becoming an alarming issue which needs to be addressed on a thorough technical basis. Nonetheless, exploring CO2 capture using membrane contactor technology has shown great potential to be applied and utilised by industry to deal with post- and pre-combustion of CO2. A systematic review of the literature has been conducted to analyse and assess CO2 removal using membrane contactors for capturing techniques in industrial processes. The review began with a total of 2650 papers, which were obtained from three major databases, and then were excluded down to a final number of 525 papers following a defined set of criteria. The results showed that the use of hollow fibre membranes have demonstrated popularity, as well as the use of amine solvents for CO2 removal. This current systematic review in CO2 removal and capture is an important milestone in the synthesis of up to date research with the potential to serve as a benchmark databank for further research in similar areas of work. This study provides the first systematic enquiry in the evidence to research further sustainable methods to capture and separate CO2.
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13
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Single- and mixed-gas sorption in large-scale molecular models of glassy bulk polymers. Competitive sorption of a binary CH4/N2 and a ternary CH4/N2/CO2 mixture in a polyimide membrane. J Memb Sci 2020. [DOI: 10.1016/j.memsci.2020.118478] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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14
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Lee WH, Bae JY, Yushkin A, Efimov M, Jung JT, Volkov A, Lee YM. Energy and time efficient infrared (IR) irradiation treatment for preparing thermally rearranged (TR) and carbon molecular sieve (CMS) membranes for gas separation. J Memb Sci 2020. [DOI: 10.1016/j.memsci.2020.118477] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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15
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The Separative Performance of Modules with Polymeric Membranes for a Hybrid Adsorptive/Membrane Process of CO 2 Capture from Flue Gas. MEMBRANES 2020; 10:membranes10110309. [PMID: 33126587 PMCID: PMC7692737 DOI: 10.3390/membranes10110309] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/25/2020] [Revised: 10/23/2020] [Accepted: 10/26/2020] [Indexed: 11/18/2022]
Abstract
Commercially available polymeric membrane materials may also show their potential for CO2 capture by the association of the membrane process with other separation techniques in a hybrid system. In the current study, PRISM PA1020/Air Products and UBE UMS-A5 modules with membrane formed of modified polysulfone and polyimide, respectively, were assessed as a second stage in the hybrid vacuum swing adsorption (VSA)–membrane process developed in our laboratory. For this purpose, the module permeances of CO2, N2, and O2 at different temperatures were determined, and the separation of CO2/N2 and CO2/N2/O2 mixtures was investigated in an experimental setup. An appropriate mathematical model was also developed and validated based on experimental data. It was found that both modules can provide CO2-rich gas of the purity of > 95% with virtually the same recovery (40.7−63.6% for maximum carbon dioxide content in permeate) when fed with pre-enriched effluent from the VSA unit. It was also found that this level of purity and recovery was reached at a low feed to permeate the pressure ratio (2−2.5) in both modules. In addition, both modules reveal stable separation performance, and thus, their applicability in a hybrid system depends on investment outlays and will be the subject of optimization investigations, which will be supported by the model presented and validated in this study.
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Lee J, Kim JS, Moon SY, Park CY, Kim JF, Lee YM. Dimensionally-controlled densification in crosslinked thermally rearranged (XTR) hollow fiber membranes for CO2 capture. J Memb Sci 2020. [DOI: 10.1016/j.memsci.2019.117535] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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17
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Nikolaeva D, Luis P. Top-Down Polyelectrolytes for Membrane-Based Post-Combustion CO 2 Capture. Molecules 2020; 25:E323. [PMID: 31941140 PMCID: PMC7024304 DOI: 10.3390/molecules25020323] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2019] [Revised: 01/07/2020] [Accepted: 01/08/2020] [Indexed: 11/16/2022] Open
Abstract
Polymer-based CO2 selective membranes offer an energy efficient method to separate CO2 from flue gas. `Top-down' polyelectrolytes represent a particularly interesting class of polymer materials based on their vast synthetic flexibility, tuneable interaction with gas molecules, ease of processability into thin films, and commercial availability of precursors. Recent developments in their synthesis and processing are reviewed herein. The four main groups of post-synthetically modified polyelectrolytes discern ionised neutral polymers, cation and anion functionalised polymers, and methacrylate-derived polyelectrolytes. These polyelectrolytes differentiate according to the origin and chemical structure of the precursor polymer. Polyelectrolytes are mostly processed into thin-film composite (TFC) membranes using physical and chemical layer deposition techniques such as solvent-casting, Langmuir-Blodgett, Layer-by-Layer, and chemical grafting. While solvent-casting allows manufacturing commercially competitive TFC membranes, other methods should still mature to become cost-efficient for large-scale application. Many post-synthetically modified polyelectrolytes exhibit outstanding selectivity for CO2 and some overcome the Robeson plot for CO2/N2 separation. However, their CO2 permeance remain low with only grafted and solvent-casted films being able to approach the industrially relevant performance parameters. The development of polyelectrolyte-based membranes for CO2 separation should direct further efforts at promoting the CO2 transport rates while maintaining high selectivities with additional emphasis on environmentally sourced precursor polymers.
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Affiliation(s)
- Daria Nikolaeva
- UCLouvain—IMMC, Materials & Process Engineering, Place Sainte Barbe 2, 1348 Louvain-la-Neuve, Belgium;
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Kim JS, Moon SJ, Wang HH, Kim S, Lee YM. Mixed matrix membranes with a thermally rearranged polymer and ZIF-8 for hydrogen separation. J Memb Sci 2019. [DOI: 10.1016/j.memsci.2019.04.029] [Citation(s) in RCA: 49] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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19
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High-performance microporous polymer membranes prepared by interfacial polymerization for gas separation. J Memb Sci 2019. [DOI: 10.1016/j.memsci.2018.12.029] [Citation(s) in RCA: 27] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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Ye L, Wang L, Jie X, Yu C, Kang G, Cao Y. The evolution of free volume and gas transport properties for the thermal rearrangement of poly(hydroxyamide-co-amide)s membranes. J Memb Sci 2019. [DOI: 10.1016/j.memsci.2018.11.029] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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21
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22
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Affiliation(s)
- Sylvie Neyertz
- Univ. Savoie Mont Blanc, Univ. Grenoble Alpes, CNRS, Grenoble INP, LEPMI, 38000 Grenoble, France
| | - David Brown
- Univ. Savoie Mont Blanc, Univ. Grenoble Alpes, CNRS, Grenoble INP, LEPMI, 38000 Grenoble, France
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Lee S, Binns M, Lee JH, Moon JH, Yeo JG, Yeo YK, Lee Y, Kim JK. Membrane separation process for CO2 capture from mixed gases using TR and XTR hollow fiber membranes: Process modeling and experiments. J Memb Sci 2017. [DOI: 10.1016/j.memsci.2017.07.003] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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24
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Yong WF, Ho YX, Chung TS. Nanoparticles Embedded in Amphiphilic Membranes for Carbon Dioxide Separation and Dehumidification. CHEMSUSCHEM 2017; 10:4046-4055. [PMID: 28834318 DOI: 10.1002/cssc.201701405] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/31/2017] [Indexed: 06/07/2023]
Abstract
Polymers containing ethylene oxide (EO) groups have gained significant interest as the EO groups have favorable interactions with polar molecules such as H2 O, quadrupolar molecules such as CO2 , and metal ions. However, the main challenges of poly(ethylene oxide) (PEO) membranes are their weak mechanical properties and high crystallinity nature. The amphiphilic copolymer made from PEO terephthalate and poly(butylene terephthalate) (PEOT/PBT) comprises both hydrophilic and hydrophobic segments. The hydrophilic PEOT segment is thermosensitive, which facilities gas transports whereas the hydrophobic PBT segment is rigid, which provides mechanical robustness. This work demonstrates a new strategy to design amphiphilic mixed matrix membranes (MMMs) by incorporating zeolitic imidazolate framework, ZIF-71, into the PEOT/PBT copolymer. The resultant membrane shows an enhanced CO2 permeability with an ideal CO2 /N2 selectivity surpassing the original PEOT/PBT and Robeson's Upper bound line. The nanoparticles-embedded amphiphilic membranes exhibit characteristics of high transparency and mechanical robustness. Mechanically strong composite hollow fiber membranes consisting of PEOT/PBT/ZIF-71 as the selective layer were also prepared. The resultant hollow fibers possess an excellent CO2 permeance of 131 GPU (gas permeation units), CO2 /N2 selectivity of 52.6, H2 O permeance of 9300 GPU and H2 O/N2 selectivity of 3700, showing great potential for industrial CO2 capture and dehumidification.
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Affiliation(s)
- Wai Fen Yong
- Department of Chemical and Biomolecular Engineering, National University of Singapore, 4 Engineering Drive 4, 117585, Singapore, Singapore
| | - Yan Xun Ho
- Department of Chemical and Biomolecular Engineering, National University of Singapore, 4 Engineering Drive 4, 117585, Singapore, Singapore
| | - Tai-Shung Chung
- Department of Chemical and Biomolecular Engineering, National University of Singapore, 4 Engineering Drive 4, 117585, Singapore, Singapore
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Lee JH, Lee J, Jo HJ, Seong JG, Kim JS, Lee WH, Moon J, Lee D, Oh WJ, Yeo JG, Lee YM. Wet CO 2 /N 2 permeation through a crosslinked thermally rearranged poly(benzoxazole- co -imide) (XTR-PBOI) hollow fiber membrane module for CO 2 capture. J Memb Sci 2017. [DOI: 10.1016/j.memsci.2017.06.032] [Citation(s) in RCA: 36] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Jo ES, An X, Ingole PG, Choi WK, Park YS, Lee HK. CO 2 /CH 4 separation using inside coated thin film composite hollow fiber membranes prepared by interfacial polymerization. Chin J Chem Eng 2017. [DOI: 10.1016/j.cjche.2016.07.010] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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27
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Brunetti A, Cersosimo M, Dong G, Woo KT, Lee J, Kim JS, Lee YM, Drioli E, Barbieri G. In situ restoring of aged thermally rearranged gas separation membranes. J Memb Sci 2016. [DOI: 10.1016/j.memsci.2016.07.030] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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