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- Author:
- Taniguchi, Ikuo; Urai, Hiromi; Kai, Teruhiko; Duan, Shuhong; Kazama, Shingo
- Source:
- Journal of membrane science 2013 v.444 pp. 96-100
- ISSN:
- 0376-7388
- Subject:
- X-radiation; amines; artificial membranes; bicarbonates; carbon; carbon dioxide; crosslinking; differential scanning calorimetry; dissociation; heat production; hydrogen; modulus of elasticity; nuclear magnetic resonance spectroscopy; polyethylene glycol; solubility; stable isotopes
- Abstract:
- ... A polymeric membrane composed of poly(amidoamine) (PAMAM) dendrimer immobilized in a poly(ethylene glycol) (PEG) network expresses excellent CO₂ separation properties over smaller H₂. The preferential CO₂ permeation can be explained by specific interaction between CO₂ and primary amine of the dendrimer, which enhances CO₂ solubility into the polymeric membrane. CO₂ forms carbamate with the amines ...
- DOI:
- 10.1016/j.memsci.2013.05.017
- http://dx.doi.org/10.1016/j.memsci.2013.05.017
- Author:
- Athanasekou, C.; Pedrosa, M.; Tsoufis, T.; Pastrana-Martínez, L.M.; Romanos, G.; Favvas, E.; Katsaros, F.; Mitropoulos, A.; Psycharis, V.; Silva, A.M.T.
- Source:
- Journal of membrane science 2017 v.522 pp. 303-315
- ISSN:
- 0376-7388
- Subject:
- X-radiation; X-ray diffraction; alcohols; aluminum oxide; artificial membranes; ceramics; filters; filtration; graphene oxide; helium; hydrogen; permeability; pervaporation; porosity; porous media; sieving; water vapor
- Abstract:
- ... A large series of self-standing and supported graphene oxide (GO) membranes were prepared via a facile synthetic approach involving the filtration of GO suspensions through polymeric and ceramic macroporous filters. Our overall aim was to develop a membrane that would be almost impermeable to helium and hydrogen, exhibiting in parallel very high water vapor and moderate alcohol vapor permeability, ...
- DOI:
- 10.1016/j.memsci.2016.09.031
- https://dx.doi.org/10.1016/j.memsci.2016.09.031
- Author:
- Plackett, David; Siu, Ana; Li, Qingfeng; Pan, Chao; Jensen, Jens Oluf; Nielsen, Søren Fæster; Permyakova, Anastasia A.; Bjerrum, Niels J.
- Source:
- Journal of membrane science 2011 v.383 no.1-2 pp. 78-87
- ISSN:
- 0376-7388
- Subject:
- X-radiation; ambient temperature; artificial membranes; cations; clay; dimensional stability; electric power; fuel cells; hydrogen; hydrogen bonding; infrared spectroscopy; ion exchange; permeability; phosphoric acid; polymers; relative humidity; salts; tensile strength
- Abstract:
- ... Good dispersion of modified laponite clay was achieved in polybenzimidazole (PBI) solutions which, when cast and allowed to dry, resulted in homogeneous and transparent composite membranes containing up to 20wt% clay in the polymer. The clay was organically modified using a series of ammonium and pyridinium salts with varying polarity and hydrogen-bonding capacity. Clay modification by ion-exchang ...
- DOI:
- 10.1016/j.memsci.2011.08.038
- http://dx.doi.org/10.1016/j.memsci.2011.08.038
- Author:
- García-García, F.R.; Tsang, S.C.; Li, K.
- Source:
- Journal of membrane science 2014 v.455 pp. 92-102
- ISSN:
- 0376-7388
- Subject:
- X-radiation; X-ray diffraction; aluminum oxide; artificial membranes; catalysts; catalytic activity; copper; coprecipitation; energy-dispersive X-ray analysis; hydrogen; hydrogen production; light microscopy; methanol; permeability; scanning electron microscopy; silver; spectroscopy; steam; zinc
- Abstract:
- ... In this study, asymmetric Al2O3 hollow fibres have been used as a support for either a Cu/Zn/GaOX based catalyst or a Pd/Ag membrane in the development of a catalytic hollow fibre micro-reactor (CHFMR) and hollow fibre membrane reactor (HFMR), respectively. The Cu/Zn/GaOX based catalyst was successfully deposited inside the finger-like region of the Al2O3 hollow fibres by the co-precipitation tech ...
- DOI:
- 10.1016/j.memsci.2013.12.070
- http://dx.doi.org/10.1016/j.memsci.2013.12.070
- Author:
- Gharibi, Hussein; Saadatinasab, Mohammadamir; Zolfaghari, Alireza
- Source:
- Journal of membrane science 2013 v.447 pp. 355-361
- ISSN:
- 0376-7388
- Subject:
- X-radiation; X-ray diffraction; X-ray photoelectron spectroscopy; artificial membranes; elemental composition; energy-dispersive X-ray analysis; hydrogen; hydrogen sulfide; palladium; permeability; poisoning; scanning electron microscopy; stainless steel; sulfur; temperature
- Abstract:
- ... Palladium membrane is the best choice for hydrogen ultra-purification; however, it suffers from difficulties such as hydrogen embrittlement and poisoning with sulfur compounds. In order to overcome these problems, a dense PdAg alloy composite membrane was synthesized using the sequential electroless plating of Pd and Ag onto a porous stainless steel. Then a thin layer of sulfur tolerant PdCu fcc p ...
- DOI:
- 10.1016/j.memsci.2013.07.037
- http://dx.doi.org/10.1016/j.memsci.2013.07.037
- Author:
- Rahman, Md. Mushfequr; Filiz, Volkan; Shishatskiy, Sergey; Abetz, Clarissa; Neumann, Silvio; Bolmer, Sabrina; Khan, Muntazim Munir; Abetz, Volker
- Source:
- Journal of membrane science 2013 v.437 pp. 286-297
- ISSN:
- 0376-7388
- Subject:
- X-radiation; artificial membranes; atomic force microscopy; carbon dioxide; differential scanning calorimetry; energy; energy-dispersive X-ray analysis; hydrogen; methane; nanocomposites; nitrogen; oxygen; permeability; phase transition; polyethylene glycol; scanning electron microscopy; spectroscopy; temperature; topography
- Abstract:
- ... Nanocomposite membranes were prepared by incorporation of commercial poly(ethylene glycol) functionalized polyoctahedral oligomeric silsesquioxanes (PEG-POSS) in two grades of poly(ether-block-amide) namely PEBAX® MH 1657 and PEBAX® 2533. Single gas permeabilities of N₂, O₂, CH₄, H₂, and CO₂ were measured using the time-lag method. CO₂ permeability increased two fold after incorporation of 30wt% P ...
- DOI:
- 10.1016/j.memsci.2013.03.001
- http://dx.doi.org/10.1016/j.memsci.2013.03.001
- Author:
- Delhorbe, Virginie; Reijerkerk, Sander R.; Cailleteau, Céline; Bathfield, Maël; Chikh, Linda; Gouanve, Fabrice; Ogier, Lionel; Espuche, Eliane; Ameduri, Bruno; Vidal, Serge; Gebel, Gérard; Morin, Arnaud; Fichet, Odile
- Source:
- Journal of membrane science 2013 v.429 pp. 168-180
- ISSN:
- 0376-7388
- Subject:
- X-radiation; artificial membranes; crosslinking; electrolytes; fuel cells; functional properties; hydrogen; oxygen; permeability; polymers; propane; sorption; water vapor
- Abstract:
- ... Original membranes based on an interpenetrating polymer network (IPN) architecture combining a poly(2-acrylamido-2-methyl-1-propane sulfonic acid) (AMPS) network and a fluorinated network were synthesized. The AMPS weight compositions were varied from 50 to 70wt%. The first network was achieved by radical copolymerization of AMPS with a fluorinated telechelic diacrylate while the second one was ob ...
- DOI:
- 10.1016/j.memsci.2012.11.032
- http://dx.doi.org/10.1016/j.memsci.2012.11.032