DC Field | Value | Language |
---|---|---|
dc.contributor.author | Lee, Dong-Wook | ko |
dc.contributor.author | Park, Sang-Jun | ko |
dc.contributor.author | Yu, Chang-Yeol | ko |
dc.contributor.author | Ihm, Son Ki | ko |
dc.contributor.author | Lee, Kew-Ho | ko |
dc.date.accessioned | 2008-03-24T09:17:04Z | - |
dc.date.available | 2008-03-24T09:17:04Z | - |
dc.date.created | 2012-02-06 | - |
dc.date.created | 2012-02-06 | - |
dc.date.issued | 2007-09 | - |
dc.identifier.citation | JOURNAL OF MEMBRANE SCIENCE, v.302, no.1-2, pp.265 - 270 | - |
dc.identifier.issn | 0376-7388 | - |
dc.identifier.uri | http://hdl.handle.net/10203/3492 | - |
dc.description.abstract | A stainless steel-supported Knudsen membrane (SKM) with remarkably high permeability was successfully synthesized using only 100 nm-sized colloidal silica sol by means of a dipping-rolling-freezing-fast drying (DRFF) and soaking-rolling-freezing-fast drying (SRFF) method. Hydrogen and nitrogen permeances of the SKM were (6.7-8.2) x 10(-6) and (1.8-2.3) x 10(-6) Mol m(-2) S- I Pa-1 with a H-2/N-2 permselectivity of 3.5-3.7, which approaches to a theoretical H-2/N-2 selectivity for the Knudsen diffusion mechanism (3.74). In comparison with a typical mesoporous gamma-alumina membrane supported on a porous stainless steel or a-alumina substrate, the SKM had 20 and 5.5 times permeance with almost same H-2/N-2 permselectivity, respectively. Generally, mesoporous materials such as gamma-alumina and the M41S family with several nm-sized pores are employed to obtain the Knudsen-dominated permeation characteristics. In this case, a decrease in the gas permeance is inevitable due to deposition of a mesoporous skin layer. However, in the case of the SKM, the Knudsen-dominated permselectivity was extraordinarily obtained through modification of porous stainless steel substrates with the colloidal silica particles having relatively large particle size, because a well-densified layer of the 100 nm-sized colloidal silica could be obtained without formation of defects via the freezing procedure. In addition, the large porosity of the 100 nm-sized colloidal silica layer gave rise to the remarkably high gas permeance. (c) 2007 Elsevier B.V. All rights reserved. | - |
dc.language | English | - |
dc.language.iso | en_US | en |
dc.publisher | Elsevier Science Bv | - |
dc.subject | MESOPOROUS SILICA MEMBRANES | - |
dc.subject | PERMEATION | - |
dc.subject | BEHAVIOR | - |
dc.title | Novel synthesis of a porous stainless steel-supported Knudsen membrane with remarkably high permeability | - |
dc.type | Article | - |
dc.identifier.wosid | 000249749400029 | - |
dc.identifier.scopusid | 2-s2.0-34548009602 | - |
dc.type.rims | ART | - |
dc.citation.volume | 302 | - |
dc.citation.issue | 1-2 | - |
dc.citation.beginningpage | 265 | - |
dc.citation.endingpage | 270 | - |
dc.citation.publicationname | JOURNAL OF MEMBRANE SCIENCE | - |
dc.identifier.doi | 10.1016/j.memsci.2007.06.054 | - |
dc.embargo.liftdate | 9999-12-31 | - |
dc.embargo.terms | 9999-12-31 | - |
dc.contributor.localauthor | Ihm, Son Ki | - |
dc.contributor.nonIdAuthor | Lee, Dong-Wook | - |
dc.contributor.nonIdAuthor | Park, Sang-Jun | - |
dc.contributor.nonIdAuthor | Yu, Chang-Yeol | - |
dc.contributor.nonIdAuthor | Lee, Kew-Ho | - |
dc.type.journalArticle | Article | - |
dc.subject.keywordAuthor | porous stainless steel | - |
dc.subject.keywordAuthor | colloidal silica | - |
dc.subject.keywordAuthor | knudsen membrane | - |
dc.subject.keywordPlus | MESOPOROUS SILICA MEMBRANES | - |
dc.subject.keywordPlus | PERMEATION | - |
dc.subject.keywordPlus | BEHAVIOR | - |
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