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You searched for: Journal name Journal of membrane science Remove constraint Journal name: Journal of membrane science Subject term hydrogen Remove constraint Subject term: hydrogen
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1. Acid-resistant thin-film composite nanofiltration membrane prepared from polyamide-polyurea and the behavior of density functional theory study

Author:
Hee Min Park; Mohamed Ismael; Hiromitsu Takaba; Yong Taek Lee
Source:
Journal of membrane science 2022 v.645 pp. 120175
ISSN:
0376-7388
Subject:
Gibbs free energy; acid tolerance; density functional theory; energy; ethylenediamines; hydrogen; hydrolysis; nanofiltration; pH; polyamides; polymerization; trimesoyl chloride; urea
Abstract:
... Acid-resistant nanofiltration membranes consisting of amide and urea groups have enhanced acid stability. A polyamide-polyurea NF membrane was fabricated by the interfacial polymerization reaction of linear ethylenediamine with toluene-diisocyanate and trimesoyl chloride on a polysulfone (PSf) support layer. The optimized EDA₀.₅/TMC₀.₀₅-TDI₀.₀₅ membrane has a MgSO₄ rejection rate of 98% and was ma ...
DOI:
10.1016/j.memsci.2021.120175

2. Enhancement of hydrogen permeation stability at high temperatures for Pd/Nb30Ti35Co35/Pd composite membranes by HfN intermediate layer

Author:
Xiao Liang; Xinzhong Li; Ruirun Chen; Hiromi Nagaumi; Jingjie Guo; Dongmei Liu
Source:
Journal of membrane science 2022 v.643 pp. 120062
ISSN:
0376-7388
Subject:
hydrogen; models; permeability; temperature
Abstract:
... Composite membranes of Pd/Nb₃₀Ti₃₅Co₃₅/Pd exhibit high potential in hydrogen separation and purification applications. There are two factors, interlayer diffusion and aggregation of Pd, causing the flux degradation during long-term hydrogen permeation at high temperatures (>400 °C). HfN intermediate layer is used to restrict the interdiffusion between the Pd layer and the substrate layer. The long ...
DOI:
10.1016/j.memsci.2021.120062

3. Externally self-supported metallic nickel hollow fiber membranes for hydrogen separation

Author:
Mingming Wang; Zhigang Wang; Xiaoyao Tan; Shaomin Liu
Source:
Journal of membrane science 2022 v.653 pp. 120513
ISSN:
0376-7388
Subject:
air; coagulants; hydrogen; microstructure; nickel
Abstract:
... Highly-asymmetric metallic Ni hollow fiber membranes (NHFMs) with a dense inner skin layer and an outer porous substrate were fabricated by a modified phase inversion and sintering technique. A triple-orifice spinneret was used for spinning the hollow fiber precursors with water as the internal coagulant and a solvent-ethanol mixture as the temporary external coagulant. The hollow fiber precursors ...
DOI:
10.1016/j.memsci.2022.120513

4. Hydrophobically modified Pd membrane for the efficient purification of hydrogen in light alcohols steam reforming process

Author:
Chenyang Zhao; Yujia Liu; Hongwei Zhu; Junjie Feng; Huiyun Jiang; Fei An; Yan Jin; Wei Xu; Zhe Yang; Bing Sun
Source:
Journal of membrane science 2022 v.647 pp. 120326
ISSN:
0376-7388
Subject:
asymmetric membranes; carbon; hot water treatment; hydrogen; hydrogen production; hydrophobicity; industrial applications; palladium; permeability; silane; steam; zeolites
Abstract:
... The ability to selectively remove H₂ from the product has made palladium (Pd) membrane reactor a good choice for steam reforming reaction. However, carbonaceous deposited on the surface of Pd membrane during reaction hindered its industrial application. In order to protect Pd membrane from being poisoned by water and light alcohols, a TS-1/Pd composite membrane was prepared by a facile one-step hy ...
DOI:
10.1016/j.memsci.2022.120326

5. Oxidized black phosphorus nanosheets/sulfonated poly (ether ether ketone) composite membrane for vanadium redox flow battery

Author:
Afzal; Wanting Chen; Bo Pang; Xiaoming Yan; Xiaobin Jiang; Fujun Cui; Xuemei Wu; Gaohong He
Source:
Journal of membrane science 2022 v.644 pp. 120084
ISSN:
0376-7388
Subject:
asymmetric membranes; batteries; energy efficiency; hydrogen; nanosheets; oxidation; permeability; phosphorus; polymers; vanadium
Abstract:
... A novel oxidized black phosphorus nanosheet (O-bPn) is proposed to improve ion selectivity of sulfonated poly (ether ether ketone) (SPEEK) membrane for vanadium redox flow battery (VRFB). O-bPn possesses a unique two-dimensional (2D) puckered lattice structure, which could function as an effective blocker for vanadium ion permeability. Moreover, diverse oxygen-containing groups on O-bPn surface in ...
DOI:
10.1016/j.memsci.2021.120084

6. Performance optimization of imidazole containing copolyimide/functionalized ZIF-8 mixed matrix membrane for gas separations

Author:
Xiya Yuan; Huiya Yu; Shan Xu; Guolong Huo; Chris J. Cornelius; Yanfang Fan; Nanwen Li
Source:
Journal of membrane science 2022 v.644 pp. 120071
ISSN:
0376-7388
Subject:
adhesion; glass transition temperature; hydrogen; imidazole; membrane permeability; surface tension; thermal stability
Abstract:
... The combination of functionalized metal organic frameworks with a polymer with structural similarity is a feasible route to enhance binary phase adhesion of hybrid membranes. Herein, we incorporate amine-modified ZIF-8 with a new type of much permeable imidazole-containing copolyimide (6FBD), which contains the bulky 2,4,6-trimethyl-1,3-diaminobenzene groups, to produce compatible MMMs with optimi ...
DOI:
10.1016/j.memsci.2021.120071

7. Stable branched polybenzimidazole high temperature proton exchange membrane: Crosslinking and pentaphosphonic-acid doping lower fuel permeability and enhanced proton transport

Author:
Hui Guo; Zhongfang Li; Hongchang Pei; Peng Sun; Lei Zhang; Ping Li; Xiaoyan Yin
Source:
Journal of membrane science 2022 v.644 pp. 120092
ISSN:
0376-7388
Subject:
bromination; cerium; crosslinking; deformation; dimensional stability; durability; hydrogen; liquids; mechanical properties; methanol; permeability; polymerization; polymers; temperature
Abstract:
... Branched polybenzimidazole (PBI) derivatives with large free volume and deformation rate exhibit unexpected properties in high temperature proton exchange membranes (HTPEMs) applications. However, the weak chain entanglement of branched structure implies poor membrane-forming performance. To effectively improve the comprehensive performance of HTPEMs, a branched tqPBI polymer is prepared by direct ...
DOI:
10.1016/j.memsci.2021.120092

8. Structural two-phase evolution of aminosilica-based silver-coordinated membranes for increased hydrogen separation

Author:
Ufafa Anggarini; Hiroki Nagasawa; Masakoto Kanezashi; Toshinori Tsuru
Source:
Journal of membrane science 2022 v.642 pp. 119962
ISSN:
0376-7388
Subject:
dehydrogenation; evolution; hydrogen; nanosilver; organosilicon compounds; permeability; propane; silver
Abstract:
... Hybrid organosilica membranes of silver-doped bis [3-(trimethoxysilyl) propyl] amine (BTPA) were prepared via sol-gel processing followed by coordination reactions to improve the permeability and separation performance. The evolution of silver in two phases as silver ions and as nanoparticles was observed during modification of the aminosilica networks; the silver ions coordinated with amine moiet ...
DOI:
10.1016/j.memsci.2021.119962

9. Surface engineering design of polyamide membranes for enhanced boron removal in seawater desalination

Author:
Shuhao Wang; Shaosuo Bing; Haoyong Zhang; Yong Zhou; Lin Zhang; Congjie Gao
Source:
Journal of membrane science 2022 v.651 pp. 120425
ISSN:
0376-7388
Subject:
boron; desalination; hydrogen; polyamides; polymerization; porosity; reaction kinetics; reverse osmosis; seawater; skeleton
Abstract:
... Tailoring excellent polyamide (PA) seawater reverse osmosis (SWRO) membranes for boron (B) removal is a key challenge. Herein, we developed a facile surface engineering design strategy to improve the boron removal and desalination performance of SWRO membranes by controlling the reaction kinetics of interfacial polymerization. The functional groups and density of the oligomers covering the surface ...
DOI:
10.1016/j.memsci.2022.120425

10. Ultra-thin h-BN doped high sulfonation sulfonated poly (ether-ether-ketone) of PTFE-reinforced proton exchange membrane

Author:
Ziyi Huang; Bo Lv; Li Zhou; Tao wei; Xiaoping Qin; Zhigang Shao
Source:
Journal of membrane science 2022 v.644 pp. 120099
ISSN:
0376-7388
Subject:
asymmetric membranes; boron nitride; fuel cells; humidification; hydrogen; nanosheets; permeability; polytetrafluoroethylene
Abstract:
... The high proton conductivity of proton exchange membrane under low humidification must be maintained. In this work, an ultra-thin reinforced membrane was prepared by using hexagonal boron nitride nanosheets (h-BN), high sulfonated poly (ether-ether-ketone) (sPEEK, DS = 81.4%), and expanded polytetrafluoroethylene (ePTFE) for low-humidification proton exchange membrane fuel cell (PEMFC). A sPEEK/PT ...
DOI:
10.1016/j.memsci.2021.120099

11. ZIF-67 membranes supported on porous ZnO hollow fibers for hydrogen separation from gas mixtures

Author:
Hanhan Chen; Claudia Li; Lu Liu; Bo Meng; Naitao Yang; Jaka Sunarso; Lihong Liu; Shaomin Liu; Xiaobin Wang
Source:
Journal of membrane science 2022 v.653 pp. 120550
ISSN:
0376-7388
Subject:
carbon dioxide; hydrogen; permeability; thermal stability
Abstract:
... Co-based zeolitic imidazolate framework-67 (ZIF) membranes present impressive potential to be applied for efficient gas separation. However, the synthesis of ZIF-67 membrane is challenging because ZIF-67 crystals tend to nucleate and grow in the reaction solution rather than on the substrate surface. In this work, ZIF-67 membranes were developed on porous ZnO hollow fibers via in situ solvothermal ...
DOI:
10.1016/j.memsci.2022.120550

12. A highly stable reinforced PEM assisted by resveratrol and polydopamine-treated PTFE

Author:
Youxiu Huo; Qingbing Li; Zhiyan Rui; Rui Ding; Jia Liu; Jia Li; Jianguo Liu
Source:
Journal of membrane science 2021 v.635 pp. 119453
ISSN:
0376-7388
Subject:
asymmetric membranes; composite materials; electric potential difference; free radical scavengers; hydrogen; hydrophilicity; longevity; polytetrafluoroethylene; resveratrol; solvents; strength (mechanics); sulfonic acids
Abstract:
... The need to reduce the cost of proton exchange membranes (PEMs) leads to less usage of perfluorinated sulfonic acid (PFSA), which would definitely result in a decline in the membrane lifespan under the attack of free radicals. In this study, polytetrafluoroethylene (PTFE) is used as a reinforced material to make a thinner composite membrane due to the poor mechanical strength of the pristine membr ...
DOI:
10.1016/j.memsci.2021.119453

13. A robust dually charged membrane prepared via catechol-amine chemistry for highly efficient dye/salt separation

Author:
Yang Cao; Huiru Zhang; Shiwei Guo; Jianquan Luo; Yinhua Wan
Source:
Journal of membrane science 2021 v.629 pp. 119287
ISSN:
0376-7388
Subject:
acid tolerance; adsorption; antifouling activities; hydrogen; hydrolysis; hydrophilicity; methyl orange; methylene blue; nanopores; permeability; polyacrylonitrile; polyethyleneimine; porosity; tannins; textile industry; wastewater treatment
Abstract:
... Novel nanoporous membranes with superior permeability and exceptional molecular selectivity are highly desirable for wastewater treatment and reclamation. Herein, a 3D dual-charged multilayer membrane for efficient separation of dyes/salts is fabricated via catechol-amine chemistry surface engineering. Polyethyleneimine (PEI) is firstly coated on the hydrolyzed polyacrylonitrile substrate to const ...
DOI:
10.1016/j.memsci.2021.119287

14. A strategy to design quaternized poly(2,6-dimethyl-1,4-phenylene oxide) anion exchange membranes by atom transfer radical coupling

Author:
Xiaomeng Chu; Shasha Miao; Andi Zhou; Shaojie Liu; Lei Liu; Nanwen Li
Source:
Journal of membrane science 2022 v.649 pp. 120397
ISSN:
0376-7388
Subject:
anion exchange; composite polymers; fuel cells; hydrogen; oxygen; sodium hydroxide; water uptake
Abstract:
... Sterically crowded organic cations are widely incorporated into aromatic polymers as anion exchange membranes (AEMs) materials to improve the chemical stability. However, due to the reduced entanglement between polymers, these AEMs suffer from poor mechanical properties, low conductivity, and insufficient water uptake, impeding their further application in alkaline fuel cells. To address these lim ...
DOI:
10.1016/j.memsci.2022.120397

15. Alkali-free quaternized polybenzimidazole membranes with high phosphoric acid retention ability for high temperature proton exchange membrane fuel cells

Author:
Donglin He; Guoliang Liu; Ailian Wang; Wenxi Ji; Jianing Wu; Haolin Tang; Weiran Lin; Taoyi Zhang; Haining Zhang
Source:
Journal of membrane science 2022 v.650 pp. 120442
ISSN:
0376-7388
Subject:
absorption; air; hydrogen; oxidants; phosphoric acid; solvents; temperature
Abstract:
... Although phosphoric acid doped polybenzimidazole has been proposed as promising high-temperature proton exchange membrane, the poor absorption and immobilization ability of phosphoric acid in the membrane hinders its long-term stability. In this work, high-temperature proton exchange membranes with high phosphoric acid uptake and retention ability are fabricated thorough solvent casting of an alka ...
DOI:
10.1016/j.memsci.2022.120442

16. Amino-functionalized NUS-8 nanosheets as fillers in PIM-1 mixed matrix membranes for CO2 separations

Author:
Yunchuan Pu; Ziqi Yang; Vanessa Wee; Zhongjie Wu; Zhongyi Jiang; Dan Zhao
Source:
Journal of membrane science 2022 v.641 pp. 119912
ISSN:
0376-7388
Subject:
carbon dioxide; carbon sequestration; coordination polymers; hydrogen; nanosheets; permeability
Abstract:
... Membrane-based separation technologies are promising for various applications such as carbon capture and storage (CCS). Herein, we report the preparation and performance of mixed matrix membranes (MMMs) for carbon dioxide (CO₂) separation. The MMMs comprise amino-functionalized metal-organic framework (MOF) nanosheets (NUS-8-NH₂) dispersed in the polymer of intrinsic microporosity 1 (PIM-1). Speci ...
DOI:
10.1016/j.memsci.2021.119912

17. Ammonia separation from N2 and H2 over LTA zeolitic imidazolate framework membranes

Author:
Qiushi Wei; Jolie M. Lucero; James M. Crawford; J. Douglas Way; Colin A. Wolden; Moises A. Carreon
Source:
Journal of membrane science 2021 v.623 pp. 119078
ISSN:
0376-7388
Subject:
adsorption; ammonia; diffusivity; hydrogen; mixtures; nitrogen; separation; thermodynamics
Abstract:
... LTA type zeolitic imidazolate framework membranes denoted as ZIF-21 were synthesized and evaluated for the separation of a commodity chemical, ammonia, from nitrogen and hydrogen. Membranes were grown using secondary seeded growth. Ammonia permeances were as high as 1727 GPU, with NH₃/N₂, and NH₃/H₂ ideal selectivities of 35, and 12 respectively. ZIF-21 membranes were also evaluated for gas mixtur ...
DOI:
10.1016/j.memsci.2021.119078

18. Bcc V–Fe alloys for the hydrogen separation membranes: Hydrogen solubility and global character of alloying effect

Author:
V.N. Alimov; A.O. Busnyuk; S.R. Kuzenov; E.U. Peredistov; A.I. Livshits
Source:
Journal of membrane science 2022 v.644 pp. 120159
ISSN:
0376-7388
Subject:
enthalpy; hydrogen; solubility; temperature
Abstract:
... The membranes of V-alloys are a promising alternative to Pd-alloy membranes for ultrapure hydrogen extraction. The hydrogen solubility in V–xFe alloys (x = 3.5, 4.0, 7.1, 8.8, and 13.1 at. %) was experimentally investigated in the pressure range of 10 Pa to 1.2 × 10⁶ Pa, temperature range of 250°С–450°С, and hydrogen concentration, H/M, range of 0.004–0.65. When used as an alloying element, Fe inh ...
DOI:
10.1016/j.memsci.2021.120159

19. Catalytic arene-norbornene annulation (CANAL) ladder polymer derived carbon membranes with unparalleled hydrogen/carbon dioxide size-sieving capability

Author:
Khalid Hazazi; Yingge Wang; N.M. Srivatsa Bettahalli; Xiaohua Ma; Yan Xia; Ingo Pinnau
Source:
Journal of membrane science 2022 v.654 pp. 120548
ISSN:
0376-7388
Subject:
adsorption; ammonia; carbon; carbon dioxide; carbon footprint; distillation; electricity generation; hydrogen; methane; methanol; permeability; polymers; pyrolysis; steam; temperature; transportation
Abstract:
... Hydrogen is an emerging energy source with a wide range of applications in transportation, electricity generation, and manufacturing of important chemicals such as ammonia and methanol. Hydrogen is commonly coproduced with CO₂ using steam reforming of methane and its purification is typically achieved using energy-intensive processes such as pressure swing adsorption (PSA) and cryogenic distillati ...
DOI:
10.1016/j.memsci.2022.120548

20. Compact ammonia reforming at low temperature using catalytic membrane reactors

Author:
Rok Sitar; Javishk Shah; Zhenyu Zhang; Hope Wikoff; J. Douglas Way; Colin A. Wolden
Source:
Journal of membrane science 2022 v.644 pp. 120147
ISSN:
0376-7388
Subject:
ammonia; catalysts; durability; hydrogen; membrane permeability; temperature; zeolites
Abstract:
... Ammonia is a leading carrier for the storage and transport of renewable hydrogen, but its deployment requires scalable technologies for efficient decomposition and purification. In this work, we report on the efficient delivery of high purity hydrogen from ammonia decomposition using a catalytic membrane reactor (CMR). Improvements to the electroless plating process reduced the Pd membrane thickne ...
DOI:
10.1016/j.memsci.2021.120147

21. Comparison of the effects of edge functionalized graphene oxide membranes on monovalent cation selectivity

Author:
Ruosang Qiu; Jie Xiao; Xiao Dong Chen; Cordelia Selomulya; Xiwang Zhang; Meng Wai Woo
Source:
Journal of membrane science 2021 v.620 pp. 118892
ISSN:
0376-7388
Subject:
cations; energy; filtration; graphene oxide; hydrogen; molecular dynamics
Abstract:
... Layer-by-layer graphene oxide (GO) membrane in principle has great potential in separating Li⁺ from monovalent cations, which is achieved by their functionalized interlayer entrance. The edge effects on different monovalent ions, however, are not fully understood. Therefore, molecular dynamics simulations were utilized in this study to separately elucidate the filtration effects of three typical e ...
DOI:
10.1016/j.memsci.2020.118892

22. Development of highly selective composite polymeric membranes for Li+/Mg2+ separation

Author:
H.M. Saif; R.M. Huertas; S. Pawlowski; J.G. Crespo; S. Velizarov
Source:
Journal of membrane science 2021 v.620 pp. 118891
ISSN:
0376-7388
Subject:
X-ray diffraction; asymmetric membranes; dialysis; hydrogen; lithium; magnesium; manganese monoxide; polystyrenes; seawater; sodium; sulfonates
Abstract:
... To meet the exponentially rising demand for lithium, it becomes vital to develop environmentally friendly processes for its recovery from brines, salt lakes and/or seawater. In this work, novel composite lithium transport selective polymeric membranes were developed to separate lithium and magnesium ions. Hydrogen manganese oxide (HMO) (at weight percentage from 0 to 25%), polystyrene sulfonate so ...
DOI:
10.1016/j.memsci.2020.118891

23. Effect of porous organic polymers in gas separation properties of polycarbonate based mixed matrix membranes

Author:
Laura Rodríguez-Jardón; Mar López-González; Marta Iglesias; Eva M. Maya
Source:
Journal of membrane science 2021 v.619 pp. 118795
ISSN:
0376-7388
Subject:
hydrogen; magnetism; methane; oil and gas industry; permeability; ultrasonics
Abstract:
... Polycarbonate (PC) based mixed matrix membranes (MMMs) loaded with porous organic polymers as fillers exhibit very good performance in gas separation of industrial interest. Resulting MMMs show excellent compatibility between the two phases.The MMMs were prepared in less time than the reported PC-based MMMs, by controlled addition of the filler under ultrasound stirring and magnetic stirring seque ...
DOI:
10.1016/j.memsci.2020.118795

24. Elucidating the inherent fouling tolerance of membrane contactors for ammonia recovery from wastewater

Author:
Abhishek Dutta; Sifat Kalam; Jongho Lee
Source:
Journal of membrane science 2022 v.645 pp. 120197
ISSN:
0376-7388
Subject:
ammonia; anaerobic digestion; hydrogen; hydrophobicity; streams; sulfuric acid; wastewater; water vapor
Abstract:
... Recovery of ammonia from wastewater has garnered interest due to its resource potential as fertilizers, refrigerants, and hydrogen carriers. Membrane contactors (MCs) are an effective process for ammonia recovery from wastewater streams, but the impact of membrane fouling on the process has seldom been explored. Here, we examine the dependency of membrane fouling on MC process conditions and eluci ...
DOI:
10.1016/j.memsci.2021.120197

25. Fabrication of a flexible hydrogen-bonded organic framework based mixed matrix membrane for hydrogen separation

Author:
Wei Li; Yanhong Li; Jürgen Caro; Aisheng Huang
Source:
Journal of membrane science 2022 v.643 pp. 120021
ISSN:
0376-7388
Subject:
asymmetric membranes; hydrogen; hydrogen bonding; permeability; porosity
Abstract:
... Hydrogen-bonded Organic Frameworks (HOFs), consisting of H-bonds and strong π-π interaction, are novel materials with ordered and flexible porous frameworks. With permanent porosity, HOFs are considered as a promising material for large-scale preparation of gas separation membranes owing to their superior stability. Herein, we report a novel HOF-based Mixed-Matrix Membrane (MMM) termed HOF-30@PI b ...
DOI:
10.1016/j.memsci.2021.120021

26. Fast fabrication of freestanding MXene-ZIF-8 dual-layered membranes for H2/CO2 separation

Author:
Xilu Hong; Zong Lu; Yali Zhao; Luxi Lyu; Li Ding; Yanying Wei; Haihui Wang
Source:
Journal of membrane science 2022 v.642 pp. 119982
ISSN:
0376-7388
Subject:
clean energy; electrophoresis; filtration; hydrogen; hydrogen production; nanosheets
Abstract:
... As one of the green, renewable, and clean energy resources, hydrogen is widely developed and utilized throughout the world. Highly efficient membrane separation for hydrogen production is required to give promising gas permeance with enough H₂ selectivity. The membranes are desired to be produced in large-scale, fast and facile methods. Here we report for the first time a kind of freestanding MXen ...
DOI:
10.1016/j.memsci.2021.119982

27. Fast proton-selective transport through covalent organic frameworks in aqueous phase

Author:
Fang Xu; Yixing Wang; Cheng Lian; Zhi Xu
Source:
Journal of membrane science 2022 v.648 pp. 120361
ISSN:
0376-7388
Subject:
Gibbs free energy; Lewis bases; durability; energy; hydrogen; methanol; nanopores; porosity
Abstract:
... Covalent organic frameworks (COFs) are expected to be promising candidates as the building block for proton-exchange membranes (PEMs) due to their ordered well-defined nanopore structures with high density and tunable sizes. However, the mechanism of proton-selective transport through COF membranes is still unraveled. We herein investigate the proton-selective transport behaviors through four type ...
DOI:
10.1016/j.memsci.2022.120361

28. Gas separation performance of copolymers of perfluoro(butenyl vinyl ether) and perfluoro(2,2-dimethyl-1,3-dioxole)

Author:
Moataz Ali El-Okazy; Liang Liu; Christopher P. Junk; Erich Kathmann; Whitney White; Sandra E. Kentish
Source:
Journal of membrane science 2021 v.634 pp. 119401
ISSN:
0376-7388
Subject:
activation energy; carbon dioxide; composite polymers; glass transition temperature; helium; hydrogen; permeability; thermal stability
Abstract:
... Amorphous glassy perfluorinated polymers have high gas permeability, are chemically inert, thermally stable and known for their superior separation performance for several gas pairs. In the current study, the gas separation performance of copolymers of perfluoro(butenyl vinyl ether) (PBVE) and perfluoro(2,2-dimethyl-1,3-dioxole) (PDD) with two different monomer ratios, commercially known as CyclAF ...
DOI:
10.1016/j.memsci.2021.119401

29. High-temperature hydrogen/propane separations in asymmetric carbon molecular sieve hollow fiber membranes

Author:
Lu Liu; Dongxia Liu; Chen Zhang
Source:
Journal of membrane science 2022 v.642 pp. 119978
ISSN:
0376-7388
Subject:
carbon; dehydrogenation; feed composition; hydrogen; hydrogenation; permeability; porous media; propane; pyrolysis; temperature
Abstract:
... Catalytic propane dehydrogenation membrane reactors require membranes with highly attractive high-temperature H₂/C₃H₈ separation performance. In this work, we show that polyimide-derived asymmetric carbon molecular sieve (CMS) hollow fiber membranes with thin (∼5 μm) separation layers can provide outstanding high-temperature (up to 600 °C) H₂/C₃H₈ separation factors 2–100 folds higher than micropo ...
DOI:
10.1016/j.memsci.2021.119978

30. Highly sulfonated carbon nano-onions as an excellent nanofiller for the fabrication of composite proton exchange membranes with enhanced water retention and durability

Author:
Lili Liu; Yao Lu; Yangyang Pu; Na Li; Zhaoxia Hu; Shouwen Chen
Source:
Journal of membrane science 2021 v.640 pp. 119823
ISSN:
0376-7388
Subject:
durability; fuel cells; hydrogen; hydrogen bonding; hydrophilicity; oxidative stability; phenylation; porosity; porous media; surface area; water uptake
Abstract:
... Highly sulfonated carbon nano-onions (SP–CNOs) with large specific surface area are used as a new type of nanofiller in sulfonated poly(arylene ether sulfone) (SPAES) to construct and adjust the proton transfer channels efficiently. SP-CNOs are synthesized from nanometer diamonds via thermal annealing, phenylation and sulfonation, and characterized by XRD, XPS, BET, Raman and HRTEM. The obtained m ...
DOI:
10.1016/j.memsci.2021.119823

31. Hydrogen bonding assisted OH− transport under low humidity for rapid start-up in AEMFCs

Author:
Wanjie Song; Xian Liang; Yang Zhang; Yanran Zhu; Fan Zhang; Yuxia Bai; Ming Li; Huaqing Zhang; Chengpeng Wei; Xiang Liu; Liang Wu; Xiaolin Ge; Tongwen Xu
Source:
Journal of membrane science 2022 v.647 pp. 120303
ISSN:
0376-7388
Subject:
anion exchange; anion-exchange membranes; fuel cells; hydrogen; hydrogen bonding; microstructure; molecular dynamics; relative humidity
Abstract:
... The apparent degradation of alkaline fuel cells performance at reduced relative humidity (RH) drives the interest in further improving anion exchange membranes (AEMs) functionalities and/or developing alternative AEMs. Herein, we report an AEM with urea-based structure that exhibits excellent low humidity performance. Microstructure analysis and molecular dynamics simulation show that hydrogen bon ...
DOI:
10.1016/j.memsci.2022.120303

32. Hydrogen bonding-induced 6FDA-DABA/TB polymer blends for high performance gas separation membranes

Author:
Xiuling Chen; Zhiguang Zhang; Lei Wu; Yanfang Fan; Hongying Tang; Nanwen Li
Source:
Journal of membrane science 2022 v.655 pp. 120575
ISSN:
0376-7388
Subject:
carbon dioxide; energy; heat treatment; hydrogen; polymers
Abstract:
... To promote polyimide gas transport properties, we propose a facile technique through adjustable hydrogen bonding energy through blending polyimide (6FDA-DABA) containing –COOH groups and Tröger's base (TB) polymer without damaging polymer chemical structures. The hydrogen bonding strength between –OH groups in PI and the N atoms in TB (O–H⋯N) is well tailored via controlled thermal treatment which ...
DOI:
10.1016/j.memsci.2022.120575

33. Impact of product gas impurities from dehydrogenation of perhydro-dibenzyltoluene on the performance of a 10 μm PdAg-membrane

Author:
Alexander Wunsch; Ellen Gapp; Thijs Peters; Peter Pfeifer
Source:
Journal of membrane science 2021 v.628 pp. 119094
ISSN:
0376-7388
Subject:
activation energy; adsorption; dehydrogenation; desorption; dissociation; hydrogen; liquids; methane; permeability; streams; temperature
Abstract:
... The purification of the product gas from dehydrogenation of liquid organic hydrogen carriers (LOHC) by using PdAg-membranes is highly promising, since the low level of impurities in the released hydrogen stream allows low pressure operation and favours the coupling with the dehydrogenation step. Motivated by our recent short-term investigations indicating an influence of these impurities on the me ...
DOI:
10.1016/j.memsci.2021.119094

34. Insight from perfectly selective and ultrafast proton transport through anhydrous asymmetrical graphene oxide membranes under Grotthuss mechanism

Author:
Mohammad Zakertabrizi; Ehsan Hosseini; Asghar Habibnejad Korayem; Amir Razmjou; Anthony G. Fane; Vicki Chen
Source:
Journal of membrane science 2021 v.618 pp. 118735
ISSN:
0376-7388
Subject:
electric field; geometry; graphene; graphene oxide; hydrogen; liquids; molecular dynamics; nanosheets
Abstract:
... Protons transport profoundly affects diverse fields from proton-exchange membrane fuel cells to storing liquid hydrogen. Recent advances have extended proton-exclusive transport to the two-dimensional channels that use hydrous mechanisms for fast proton transport, where the main challenge is the limited selectivity. However, the physical and chemical properties of 2D nanosheets like GO have the po ...
DOI:
10.1016/j.memsci.2020.118735

35. Low-temperature proton-exchange membrane fuel cell-grade hydrogen production by membrane reformer equipped with Pd-composite membrane and methanation catalyst on permeation stream

Author:
Han-Young Do; Chang-Hyun Kim; Jae-Yun Han; Han-Sung Kim; Shin-Kun Ryi
Source:
Journal of membrane science 2021 v.634 pp. 119373
ISSN:
0376-7388
Subject:
anodes; catalysts; hydrogen; hydrogen production; methane; methane production; permeability; stainless steel; steam; streams
Abstract:
... To produce hydrogen with a low CO concentration, steam methane reforming (SMR) was conducted in a Pd membrane reactor containing a methanation catalyst on the permeation side. Pd membranes were prepared by electroless plating (ELP) on porous stainless-steel and Inconel supports to achieve methanation. Compared with stainless-steel, Inconel support reduced the CO concentration by methanation. Howev ...
DOI:
10.1016/j.memsci.2021.119373

36. New ionic liquid-based polyoxadiazole electrolytes for hydrogen middle- and high-temperature fuel cells

Author:
Ya. Kobzar; K. Fatyeyeva; Ye. Lobko; Yu. Yakovlev; T. Hrbek; S. Marais
Source:
Journal of membrane science 2021 v.640 pp. 119774
ISSN:
0376-7388
Subject:
electrolytes; fuel cells; hydrogen; hydrophilicity; ionic liquids; modulus of elasticity; oxidative stability; polyvinylpyrrolidone; temperature; thermal stability
Abstract:
... New polyoxadiazole-based supported ionic liquid membranes were designed and elaborated for the first time to be used as a middle- and high-temperature polymer electrolyte membrane for fuel cell application. The proposed membrane molecular design combined hydroxyl-functionalized sulfonated polyoxadiazole, hydrophilic polyvinylpyrrolidone and specific protic ionic liquid, thus allowing elaboration o ...
DOI:
10.1016/j.memsci.2021.119774

37. Omnifarious performance promotion of the TFC NF membrane prepared with hyperbranched polyester intervened interfacial polymerization

Author:
Jiayu Tian; Bin Song; Shanshan Gao; Bart Van der Bruggen; Ruijun Zhang
Source:
Journal of membrane science 2022 v.642 pp. 119984
ISSN:
0376-7388
Subject:
antifouling activities; films (materials); hydrogen; membrane permeability; nanofiltration; piperazine; polyesters; polymerization; trimesoyl chloride
Abstract:
... It is a grand challenge to achieve the omnifarious performance promotion of the thin film composite (TFC) nanofiltration (NF) membranes due to the mutual influence among membrane permeability, selectivity and antifouling ability. Hereon, a rational strategy denoted as hyperbranched polyester (HPE) intervened interfacial polymerization (IP) was proposed to simultaneously improve various membrane pr ...
DOI:
10.1016/j.memsci.2021.119984

38. Plasticizer-assisted interfacial polymerization for fabricating advanced reverse osmosis membranes

Author:
Yitian Qin; Zhihao Zhu; Guodong Kang; Haijun Yu; Yiming Cao
Source:
Journal of membrane science 2021 v.619 pp. 118788
ISSN:
0376-7388
Subject:
brackish water; desalination; diethyl phthalate; hardness; hydrogen; modulus of elasticity; plasticizers; polyamides; polymerization; reverse osmosis; seawater
Abstract:
... High-performance semi-permeable membranes play a vital role in the membrane-based separation technology for seawater and brackish water desalination. Herein, plasticizer-assisted interfacial polymerization (PAIP) was implemented to fabricate aromatic polyamide layers with improved water flux and comparable salt rejection for the first time. Specifically, plasticizer (i.e., diethyl phthalate, DEP) ...
DOI:
10.1016/j.memsci.2020.118788

39. Polycrystalline metal-organic framework (MOF) membranes for molecular separations: Engineering prospects and challenges

Author:
Mohamad Rezi Abdul Hamid; Yutian Qian; Ruicong Wei; Zhen Li; Yichang Pan; Zhiping Lai; Hae-Kwon Jeong
Source:
Journal of membrane science 2021 v.640 pp. 119802
ISSN:
0376-7388
Subject:
carbon; coordination polymers; cost effectiveness; hydrogen; research and development
Abstract:
... Metal-organic frameworks (MOFs), owing to their ordered porous structure, ease of synthesis, and versatility of surface functionalization have attracted significant research interests for membrane-based separations. Zeolitic-imidazolate frameworks (ZIFs), a subclass of MOFs, have drawn the most research attention by virtue of their ease of forming high-quality membranes and potential in hydrocarbo ...
DOI:
10.1016/j.memsci.2021.119802

40. Polyimide/ZIFs mixed matrix membranes with tunable interfacial interaction for efficient gas separation

Author:
Yan Liu; Wei Xie; Shuang Liang; Xingxun Li; Yanfang Fan; Shuangjiang Luo
Source:
Journal of membrane science 2022 v.646 pp. 120240
ISSN:
0376-7388
Subject:
adhesion; carbon dioxide; hydrogen; microstructure; moieties; vibration
Abstract:
... Manipulating favorable interfacial microstructure is crucial to rationally design a high-performance mixed matrix membrane with defect-free interface. We describe herein an efficient pathway to finely tune the interfacial adhesion through balancing the metal organic frameworks and polymer functionality. The varied number of hydrogen bonds are established involving the CHO groups in hybrid ZIF-8-90 ...
DOI:
10.1016/j.memsci.2021.120240

41. Porous poly(vinylidene fluoride) (PVDF) membrane with 2D vermiculite nanosheets modification for non-aqueous redox flow batteries

Author:
Tao Liu; Jiashu Yuan; Yihan Zhen; Cuijuan Zhang; Yongdan Li
Source:
Journal of membrane science 2022 v.651 pp. 120468
ISSN:
0376-7388
Subject:
batteries; electric potential difference; fluorides; hydrogen; nanosheets; skeleton; strength (mechanics); vermiculite
Abstract:
... Lack of high-performance membrane seriously limits the performance of non-aqueous redox flow batteries (NARFBs). Here, a porous poly(vinylidene fluoride) (PVDF) membrane with 2D vermiculite nanosheets modification is proposed and prepared. The vermiculite nanosheets act as barriers to alleviate the crossover of active species. The hydrogen bonding between vermiculite and PVDF skeleton effectively ...
DOI:
10.1016/j.memsci.2022.120468

42. Preparation of defect-free asymmetric gas separation membranes with dihydrolevoglucosenone (CyreneTM) as a greener polar aprotic solvent

Author:
Alexander T. Bridge; Benjamin J. Pedretti; Joan F. Brennecke; Benny D. Freeman
Source:
Journal of membrane science 2022 v.644 pp. 120173
ISSN:
0376-7388
Subject:
hydrogen; separation; solvents; tetrahydrofuran; toxicity
Abstract:
... Nonsolvent-induced phase separation (NIPS) is widely used to prepare asymmetric gas separation membranes. Most industrial NIPS casting solution formulations are limited to a small group of glassy polymers and, importantly, require toxic polar aprotic solvents such as N,N-dimethylacetamide (DMAc), N,N-dimethylformamide (DMF), or N-methyl-2-pyrrolidone (NMP). Growing restrictions on the use of such ...
DOI:
10.1016/j.memsci.2021.120173

43. Recovery of ammonia from simulated membrane contactor effluent using bipolar membrane electrodialysis

Author:
David Saabas; Jongho Lee
Source:
Journal of membrane science 2022 v.644 pp. 120081
ISSN:
0376-7388
Subject:
acidity; ammonia; electrodialysis; energy; fertilizers; hydrogen; industrial wastewater; pH; streams
Abstract:
... Abundant in municipal, agricultural, and industrial wastewaters, ammonia is a versatile chemical, which can be used as fertilizer or as a hydrogen carrier for the hydrogen economy. Membrane contactors (MCs) are an effective membrane process for selectively recovering ammonia from a wastewater stream, but the system’s continuous acid consumption and the residual acidity in the produced stream remai ...
DOI:
10.1016/j.memsci.2021.120081

44. Reverse cation segregation and crack self-healing of Ba0.3Sr0.7Fe0.9Mo0.1O3-δ perovskite four-channel hollow fiber membrane

Author:
Jinkun Tan; Shoufei Wang; Zheng Fan; Zhicheng Zhang; Kaiping Jiang; Tianlei Wang; Zhengkun Liu; Guangru Zhang; Wanqin Jin
Source:
Journal of membrane science 2021 v.639 pp. 119753
ISSN:
0376-7388
Subject:
activation energy; catalytic activity; cations; durability; electrical conductivity; hydrogen; methane; oxidation; oxygen; permeability; strength (mechanics); temperature
Abstract:
... The cation segregation in a perovskite-type membrane deleteriously affects the membrane performance and durability. Recovery of segregation is a great challenge because of the complexity of segregation products and severe limitations from the stability of perovskite oxide. This work presents a novel approach for reversing the surface cation segregation by hydrogen-induced annealing which further s ...
DOI:
10.1016/j.memsci.2021.119753

45. Sealing Tröger base/ZIF-8 mixed matrix membranes defects for improved gas separation performance

Author:
Xueli Wang; Lei Wu; Nanwen Li; Yanfang Fan
Source:
Journal of membrane science 2021 v.636 pp. 119582
ISSN:
0376-7388
Subject:
carbon dioxide; hydrogen; hydrogen bonding; polymers
Abstract:
... Manufacturing defect-free mixed matrix membranes (MMMs) especially with high nanoparticle concentrations exceeding 40 wt% is still an ongoing challenge. Desired performance improvements are often unfulfilled in MMMs with high filler loading because nanoparticles with increasing contents are prone to aggregating, forming non-selective cavities, and deteriorating membrane's mechanical properties. To ...
DOI:
10.1016/j.memsci.2021.119582

46. Self-supported membranes fabricated by a polymer‒hydrogen bonded network with a rigidified MOF framework

Author:
Zibo Yang; Dudu Li; De Ao; Chao Ma; Ning Li; Yuxiu Sun; Zhihua Qiao; Chongli Zhong; Michael D. Guiver
Source:
Journal of membrane science 2022 v.650 pp. 120427
ISSN:
0376-7388
Subject:
carbon dioxide; hydrogen; porosity
Abstract:
... Mixed matrix membranes (MMMs) combine the advantages of porous fillers and polymer membranes, endowing them with potential applications in gas separation. Due to their high porosity and defined pore sizes, metal‒organic frameworks (MOFs) have been extensively investigated as MMM fillers. However, the frameworks of many MOFs are flexible, which may limit selectivity. Here, hydrogen bonding between ...
DOI:
10.1016/j.memsci.2022.120427

47. Simulated preparation and hydration property of a new-generation zwitterionic modified PVDF membrane

Author:
Huilin Zhu; Zheng Chen; Lanlan Qin; Lizhi Zhang; Jian Zhou
Source:
Journal of membrane science 2022 v.652 pp. 120498
ISSN:
0376-7388
Subject:
carbon; hydrogen; hydrophilicity; hydrophobicity; migratory behavior; molecular dynamics; separation; thermoplastics; trimethylamine; water treatment; water vapor; zwitterions
Abstract:
... Improving the surface hydrophilicity of the membrane can effectively deal with the membrane fouling problem in the water treatment process. In this work, the molecular dynamics (MD) simulation method was adopted to simulate the vapor induced phase separation (VIPS) process in the preparation of trimethylamine oxide-derived zwitterionic polymer-grafted polyvinylidene fluoride (PVDF-g-PTMAO) membran ...
DOI:
10.1016/j.memsci.2022.120498

48. Substantial enhancement of hydrogen permeability of Mo2C/V composite membranes by ion beam sputtering

Author:
Xiangxin Yin; Xinzhong Li; Xiao Liang; Ruirun Chen; Hiromi Nagaumi; Bangsheng Li; Jingjie Guo; Dongmei Liu
Source:
Journal of membrane science 2022 v.647 pp. 120312
ISSN:
0376-7388
Subject:
catalytic activity; cost effectiveness; hydrogen; permeability; temperature; vanadium
Abstract:
... Ion beam sputtering (IBS) was used to deposit Mo₂C catalytic layers on vanadium (V) foils and to prepare Mo₂C/V composite membranes for hydrogen separation and purification. It is found that the sputtering temperature during IBS largely affects the structure and catalytic activity of the as-deposited Mo₂C films. A high sputtering temperature facilitates the growth of cubic Mo₂C along the catalytic ...
DOI:
10.1016/j.memsci.2022.120312

49. Sulfonated poly(phenylene-co-arylene ether sulfone) multiblock membranes for application in high-performance fuel cells

Author:
Farid Wijaya; Seunghee Woo; Hyejin Lee; Adam F. Nugraha; Dongwon Shin; Byungchan Bae
Source:
Journal of membrane science 2022 v.645 pp. 120203
ISSN:
0376-7388
Subject:
air; colon; cross-coupling reactions; electrolytes; hydrogen; hydrophilicity; hydrophobicity; ion exchange capacity; nickel; oxidative stability; polymers; relative humidity; separation
Abstract:
... Sulfonated multiblock poly(phenylene-co-arylene ether sulfone) (SmPPES) membranes for application in polymer electrolyte membrane fuel cells are prepared via Colon's Nickel catalyzed cross-coupling reaction. Their chemical stabilities and proton transport abilities are examined as functions of ion-exchange capacity (IEC) and hydrophilic (sulfonated phenylene) and hydrophobic (arylene ether sulfone ...
DOI:
10.1016/j.memsci.2021.120203

50. Super selective ammonia separation through multiple-site interaction with ionic liquid-based hybrid membranes

Author:
Bingbing Yang; Lu Bai; Tingting Li; Liyuan Deng; Lei Liu; Shaojuan Zeng; Jiuli Han; Xiangping Zhang
Source:
Journal of membrane science 2021 v.628 pp. 119264
ISSN:
0376-7388
Subject:
ammonia; composite polymers; environmental protection; hydrogen; ionic liquids; nitrogen; permeability
Abstract:
... Efficient separation and recovery of ammonia (NH₃) is essential for environmental protection and resource utilization. In this work, hybrid membranes for NH₃ separation through multiple-site interaction were developed by combining the unique features of ionic liquids (ILs) and a midblock-sulfonated block copolymer. The functionalized ILs ([2-Mim][NTf₂] and [Im][NTf₂]) with ammonia interaction site ...
DOI:
10.1016/j.memsci.2021.119264