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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. 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

3. Anisotropic polymer membranes retaining nanolayered hydrogen sulfate anions for enhanced anhydrous proton conduction

Author:
Jie Luo; Qing Yang; Shuai Tan; Caihong Wang; Yong Wu
Source:
Journal of membrane science 2022 v.662 pp. 120975
ISSN:
0376-7388
Subject:
anisotropy; fuel cells; hydrogen; ionic liquids; polymerization; polymers; sulfates; thermal stability
Abstract:
... Ionic liquids bearing acidic anions are intrinsically proton-conductive but mechanically weak for device application. Maintaining ionic conductivities after solidifying ionic liquids by polymerization remains a challenge due to the restriction of ion mobility. In this work, nanolayered ionic membranes bearing aligned acidic hydrogen sulfate anions are prepared from ionic liquid crystals for enhanc ...
DOI:
10.1016/j.memsci.2022.120975

4. Atomic layer deposited aluminium oxide membranes for selective hydrogen separation through molecular sieving

Author:
Xiaomei Liu; Dingyong He
Source:
Journal of membrane science 2022 v.662 pp. 121011
ISSN:
0376-7388
Subject:
aluminum oxide; ambient temperature; hydrogen
Abstract:
... Ultra-thin membranes have significant potential for the gas separation. However, the fabrication of ultra-thin membrane with high selectivity and permeance remains a challenge. Herein, we develop a high-performance hydrogen separation membrane using atomic layer deposition (ALD) method to deposit ultra-thin Al₂O₃ layer (ALD-Al₂O₃) on a porous anodic aluminum oxide (AAO) support. The pore openings ...
DOI:
10.1016/j.memsci.2022.121011

5. Continuous graphene oxide nanolayer arranged on hydrophilic modified polytetrafluoroethylene substrate to construct high performance proton exchange membranes

Author:
Wenping Li; Chen Chen; Xiaohui Liu; Xuefei Li; Xiaohong Jiang; Xiaoli Liu; Jiazhi Yang; Jianguo Liu
Source:
Journal of membrane science 2022 v.661 pp. 120838
ISSN:
0376-7388
Subject:
asymmetric membranes; filtration; fuel cells; graphene oxide; hydrogen; hydrophilicity; methanol; permeability; polytetrafluoroethylene
Abstract:
... Graphene oxide (GO) nanolayer, combining extraordinary mechanical properties, separation performance and chemical stability, holds great promise for widespread applications. The current preparation of GO nanolayer is complex and requires expensive and technical equipment, which limits the further development. In this work, we deposit GO nanolayer on TiO₂ modified Polytetrafluoroethylene (PTFE) fil ...
DOI:
10.1016/j.memsci.2022.120838

6. Coupling water splitting and partial oxidation of methane (POM) in Ag modified La0.8Ca0.2Fe0.94O3-δ hollow fiber membrane reactors for co-production of H2 and syngas

Author:
Shude Zhang; Tao Li; Bin Wang; Zhengwei Zhou; Xiuxia Meng; Naitao Yang; Xuefeng Zhu; Shaomin Liu
Source:
Journal of membrane science 2022 v.659 pp. 120772
ISSN:
0376-7388
Subject:
catalysts; hydrogen; methane; oxidation; oxygen; reaction kinetics; synthesis gas; temperature
Abstract:
... The catalytic membrane reactor, a kind of process intensification technology, can enhance chemical engineering efficiencies by combining multi-steps of reaction and separation into one unit. However, the prerequisite to realize such a promising technology is the good match between reaction efficiency, transport rate and membrane stability to withstand the real reacting conditions particularly for ...
DOI:
10.1016/j.memsci.2022.120772

7. 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

8. 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

9. FO membrane fabricated by layer-by-layer interfacial polymerisation and grafted sulfonamide group for improving chlorine resistance and water permeability

Author:
Xinning Zhang; Paula Jungwon Choi; Noman Khalid Khanzada; Jiawei Sun; Pak Wai Wong; Jiaxin Guo; Li Ling; Di Wu; Am Jang; Alicia Kyoungjin An
Source:
Journal of membrane science 2022 pp. 121042
ISSN:
0376-7388
Subject:
chlorine; crosslinking; hydrogen; hydrophilicity; osmosis; pH; permeability; polyamides; polymerization; trimesoyl chloride; wastewater treatment
Abstract:
... This study presents a layer-by-layer interfacial polymerization approach to enhance the chlorine resistance and water permeability of thin-film composite (TFC) polyamide (PA) forward osmosis membranes. The PA film was prepared by self-polymerization using 3,5-Dihydroxybenzoic acid (DHBA) and trimesoyl chloride (TMC) with addition of 4-amino-benzene sulfonamide (4-ABSA), which is a sulfonamide mono ...
DOI:
10.1016/j.memsci.2022.121042

10. 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

11. 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

12. Fundamental modeling and experimental validation of hydrogen and oxygen transport through mixed ionic and electronic conducting membranes

Author:
Jayashree Kalyanaraman; Selene H. Morejudo; Christian Kjølseth; Dustin Beeaff; Camilla Vigen; J.R. Johnson; Benjamin A. McCool
Source:
Journal of membrane science 2022 v.660 pp. 120797
ISSN:
0376-7388
Subject:
energy; heat; hydrogen; models; oxygen
Abstract:
... Hydrogen transporting mixed ionic and electronic membranes offer tremendous opportunities for process intensification and energy savings in various applications such as reaction chemistries and heat/energy generation. Over the past several decades there has been significant advancement in the membrane materials science to produce improved molecular transport, but commercial adoption is still limit ...
DOI:
10.1016/j.memsci.2022.120797

13. 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

14. 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

15. 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

16. 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

17. Multilayered graphene oxide membranes for bioethanol purification: Microscopic insight from molecular simulation

Author:
Mao Wang; Jianwen Jiang
Source:
Journal of membrane science 2022 v.660 pp. 120888
ISSN:
0376-7388
Subject:
bioethanol; ethanol; graphene oxide; hydrogen; molecular dynamics; oxidation; permeability
Abstract:
... Graphene oxide (GO) membranes have received considerable interest for separation. The channels in GO membranes are in an atomic scale and thus it is challenging to unravel underlying separation mechanism via experiment. In this study, we model multilayered GO membranes with various channel widths (W) and oxidation degrees (O/C), subsequently simulate their performance for bioethanol (an ethanol/wa ...
DOI:
10.1016/j.memsci.2022.120888

18. Nanohybrid graphene oxide membranes functionalized using 3-mercaptopropyl trimethoxysilane for proton exchange membrane fuel cells

Author:
Md Shahjahan Kabir Chowdury; Young Jin Cho; Sung Bum Park; Yong-il Park
Source:
Journal of membrane science 2022 pp. 121035
ISSN:
0376-7388
Subject:
ambient temperature; dimensional stability; electric potential difference; electrolytes; fuels; graphene oxide; hydrogen; hydrogen fuel cells; ion exchange capacity; nanohybrids; nanosheets; oxidation; permeability; polymers; sulfonic acids; thermal stability; water uptake
Abstract:
... The high proton conductivity of graphene oxide (GO) under humidified conditions has attracted exceptional attention in many applications including fuel cells. However, the proton conductivity of GO membrane (GOM) is much lower than that of high-performance polymer electrolyte such as Nafion®, and in contact with hydrogen gas in fuel cells, the loss of surface functional groups due to reduction by ...
DOI:
10.1016/j.memsci.2022.121035

19. New graphitic carbon nitride-based composite membranes: Fast water transport through the synergistic effect of tannic acid and tris(hydroxymethyl) aminomethane

Author:
Xiaochen Zhao; Xudong Wang; Yonghao Dong; Hongmin Zhang; Wei Zhao; Jin Wang; Lei Wang
Source:
Journal of membrane science 2022 v.658 pp. 120736
ISSN:
0376-7388
Subject:
asymmetric membranes; carbon nitride; graphene; hydrogen; mass transfer; nanosheets; solvents; synergism; tannins
Abstract:
... Graphitic carbon nitride nanosheets can be assembled into two-dimensional layered separation membranes due to their unique structure; however, the narrow interlayer channels (0.32 nm) cause strong transmembrane mass transfer resistance. In this study, we expanded the interlayer spacing by intercalating tris(hydroxymethyl) aminomethane (Tris) molecules as supports while introducing high-affinity an ...
DOI:
10.1016/j.memsci.2022.120736

20. 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 no. 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

21. 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

22. 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

23. 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

24. 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

25. 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

26. 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

27. 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

28. 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

29. Ultrahigh proton conductive nanofibrous composite membrane with an interpenetrating framework and enhanced acid-base interfacial layers for vanadium redox flow battery

Author:
Penghua Qian; Haixia Wang; Jiaxuan Sheng; Yong Zhou; Haifeng Shi
Source:
Journal of membrane science 2022 v.647 pp. 120327
ISSN:
0376-7388
Subject:
asymmetric membranes; batteries; durability; electric potential difference; hydrogen; nanofibers; surface area; vanadium
Abstract:
... Sulfonated poly(ether ether ketone)-based membranes containing amphoteric functionalized nanofibrous network (SP@f) with the three-dimensional interlaced structure were developed, and the acid-base interaction between SP@f and SPEEK constructs highly conductive proton channel and compatible interfaces. The large specific surface area and aspect ratio of nanofibers afford an orientated ion transmis ...
DOI:
10.1016/j.memsci.2022.120327

30. 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

31. 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

32. 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

33. 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

34. Boosting the proton conduction using protonated imidazole for advanced ion conducting membrane

Author:
Seung-Young Choi; Sungmin Cho; Dongkyu Kim; Jaeyong Kim; Gwangho Song; Rahul Singh; Choongik Kim
Source:
Journal of membrane science 2021 v.620 pp. 118904
ISSN:
0376-7388
Subject:
electrochemistry; fuel cells; humidity; hydrogen; imidazole; nitrogen; small-angle X-ray scattering
Abstract:
... Fine-tuning the nanochannels of ion conducting membrane is the key to achieving high performance electrochemical devices. Here, we describe an effective way to enhance the membrane performance using heterocyclic imidazole compound as an additive for Nafion. The hygroscopic nature of the imidazole offered sufficient amount of water molecules to the nanochannel of Nafion, affording wider and continu ...
DOI:
10.1016/j.memsci.2020.118904

35. 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

36. Chemical stability of proton exchange membranes synergistically promoted by organic antioxidant and inorganic radical scavengers

Author:
Kangwei Xu; Supeng Pei; Wei Zhang; Zhiyue Han; Guipeng Liu; Xiaojun Xu; Jialu Ma; Yingge Zhang; Feng Liu; Yongming Zhang; Li Wang; Yecheng Zou; Han Ding; Panpan Guan
Source:
Journal of membrane science 2022 v.655 pp. 120594
ISSN:
0376-7388
Subject:
X-ray photoelectron spectroscopy; alizarin; asymmetric membranes; cerium; chelation; electric potential difference; electrochemistry; fluorides; hydrogen; oxidative stability; sulfonic acids
Abstract:
... The synergistic effects between organic antioxidants with metal ion chelation ability and inorganic radical scavengers were investigated. The different perfluorosulfonic acid (PFSA) composite membranes were prepared by single doping and codoping of alizarin (AZR) and cerium ions. AZR and cerium ion codoping not only significantly enhanced the oxidative stability of the membrane but also lessened b ...
DOI:
10.1016/j.memsci.2022.120594

37. 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

38. 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

39. 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

40. Effect of annealing process on the hydrogen permeation through Pd–Ru membrane

Author:
Zhaohui Yin; Zhanbing Yang; Miao Du; Jing Mi; Lei Hao; Yujin Tong; Yingjie Feng; Shuai Li
Source:
Journal of membrane science 2022 v.654 pp. 120572
ISSN:
0376-7388
Subject:
annealing; hydrogen; journals; membrane permeability; temperature; testing
Abstract:
... In this paper, we report the effect of the annealing process on the hydrogen permeation in/through Pd–Ru membranes. Pd–Ru membranes were deposited via sequential electroless plating method and annealed at different atmospheres and temperatures. The membranes were characterized by XRD, AES, SEM and hydrogen permeation test. The result shows that Ru is amorphous for the as-deposited Pd–Ru membrane. ...
DOI:
10.1016/j.memsci.2022.120572

41. Effect of composition of few-layered transition metal dichalcogenide nanosheets on separation mechanism of hydrogen selective membranes

Author:
Degu Lere Keshebo; Chun-Po Hu; Chien-Chieh Hu; Wei-Song Hung; Chih-Feng Wang; Hsieh-Chih Tsai; Kueir-Rarn Lee; Juin-Yih Lai
Source:
Journal of membrane science 2021 v.634 pp. 119419
ISSN:
0376-7388
Subject:
X-ray diffraction; carbon dioxide; electrons; hydrogen; industrial applications; microstructure; nanosheets; spectroscopy; surfactants; tannins
Abstract:
... The chemical composition of two-dimensional transition metal dichalcogenides (TMDs) affects the stacking of the nanosheets and changes the gas separation behavior of the stacked layer; however, this phenomenon has not been discussed in detail so far. In this work, a simple, environmental-friendly aqueous exfoliation of TMDs is applied using tannic acid (TA) for membrane synthesis. To efficiently d ...
DOI:
10.1016/j.memsci.2021.119419

42. 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

43. Effects of catalysts on water decomposition and hydrogen oxidation reactions in oxygen transport membrane reactors

Author:
Lili Cai; Zhongwei Cao; Xuefeng Zhu; Weishen Yang
Source:
Journal of membrane science 2021 v.634 pp. 119394
ISSN:
0376-7388
Subject:
catalysts; hydrogen; oxidation; oxygen
Abstract:
... Oxygen transport membrane reactors (OTMRs) are used for hydrogen separation through coupling water decomposition reaction (WDR) with hydrogen oxidation reaction (HOR). The activities of catalysts towards WDR and HOR play key roles in the hydrogen separation performance. It is of great practical significance to find suitable catalysts possessing high catalytic activities for WDR and HOR, respective ...
DOI:
10.1016/j.memsci.2021.119394

44. 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

45. 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

46. Fabrication of highly permeable PVDF loose nanofiltration composite membranes for the effective separation of dye/salt mixtures

Author:
Dongdong Kang; Huiju Shao; Guijing Chen; Xiaoliang Dong; Shuhao Qin
Source:
Journal of membrane science 2021 v.621 pp. 118951
ISSN:
0376-7388
Subject:
anhydrides; carbon nanotubes; carboxylation; composite polymers; dyes; hydrogen; nanofiltration; polyethyleneimine; polymerization; salinity; textile mill effluents; thermoplastics; wastewater treatment
Abstract:
... The separation of dyes and salts is very challenging in regards to treating high salinity textile wastewater. To effectively dispose dye/salt mixtures, it has become urgent to develop highly permeable and antifouling nanofiltration membranes. Herein, a novel loose nanofiltration membrane was fabricated by combining blending with interfacial polymerisation. Polyvinylidene fluoride (PVDF)/styrene-ma ...
DOI:
10.1016/j.memsci.2020.118951

47. Facile tailoring molecular sieving effect of PIM-1 by in-situ O3 treatment for high performance hydrogen separation

Author:
Wenhui Ji; Huibin Geng; Zishang Chen; Hao Dong; Hideto Matsuyama; Haitao Wang; Hong Wang; Jianxin Li; Wenxiong Shi; Xiaohua Ma
Source:
Journal of membrane science 2022 v.662 pp. 120971
ISSN:
0376-7388
Subject:
carbon; hydrogen; oxidation; ozone; permeability; polymers; simulation models
Abstract:
... Highly efficient hydrogen separation membrane is critical in the future hydrogen powered zero carbon society. However, challenges left in searching for hydrogen separation membranes with high permeability, selectivity and easy accessibility. Here, this target was partially achieved by a series of membranes made from in-situ ozone oxidized intrinsic mciroporous polymer membranes (O₃-PIMs) within mi ...
DOI:
10.1016/j.memsci.2022.120971

48. 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

49. High performance poly(carbazolyl aryl piperidinium) anion exchange membranes for alkaline fuel cells

Author:
Wei Yuan; Lingping Zeng; Shangkun Jiang; Caili Yuan; Qian He; Jianchuan Wang; Qiang Liao; Zidong Wei
Source:
Journal of membrane science 2022 v.657 pp. 120676
ISSN:
0376-7388
Subject:
anion exchange; anion-exchange membranes; commercialization; fuel cells; hydrogen; permeability; polymers; strength (mechanics)
Abstract:
... Anion exchange membrane fuel cells (AEMFCs) is a potential substitute to the prevailing proton exchange membrane fuel cells (PEMFCs), since non-precious metal catalysts can be applied in the AEMFCs, leading to much lower cost of it. However, anion exchange membranes (AEMs), as a crucial component of the AEMFCs, has always been a challenge in the commercialization of AEMFCs, such as poor life-time ...
DOI:
10.1016/j.memsci.2022.120676

50. 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