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DC Field | Value | Language |
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dc.citation.endPage | 230 | - |
dc.citation.number | 3 | - |
dc.citation.startPage | 219 | - |
dc.citation.title | JOURNAL OF MEMBRANE SCIENCE | - |
dc.citation.volume | 104 | - |
dc.contributor.author | Cho, Yoon-Kyoung | - |
dc.contributor.author | HAN, KW | - |
dc.contributor.author | LEE, KH | - |
dc.date.accessioned | 2023-12-22T12:41:32Z | - |
dc.date.available | 2023-12-22T12:41:32Z | - |
dc.date.created | 2014-09-05 | - |
dc.date.issued | 1995-08 | - |
dc.description.abstract | The composite membranes of gamma-Al2O3 were fabricated by sol-gel coating with boehmite (AlOOH) sol, The thickness of the membranes were in the range of 2-5 mu m depending on the number of coatings and the concentration of the sol. The permeabilities of He, N-2, and CO2 were measured at temperatures of 298-673 K and pressures of 101.3-405.2 KPa. The permeability through gamma-Al2O3 membrane was constant with the pressure difference and decreased with the square root of temperature. The main mechanism of gas transport through gamma-Al2O3 membrane was thus proved as Knudsen diffusion. CaO was impregnated on the gamma-Al2O3 membrane to improve separation factor by introducing interactions between CO2 gas molecules and the pore wall, but high separation factor was not obtained. Silica modified gamma-Al2O3 membrane was also prepared to increase the separation factor. The separation factor of CO2 to N-2 was increased to 1.4 at 298 K though it decreased with increasing temperature. The separation experiment of a CO2/N-2 mixture was also performed. The separation factor was 1.72 at 298 K and 1.5 at 673 K, which were much higher than that of the Knudsen diffusion mechanism, 0.8. | - |
dc.identifier.bibliographicCitation | JOURNAL OF MEMBRANE SCIENCE, v.104, no.3, pp.219 - 230 | - |
dc.identifier.doi | 10.1016/0376-7388(95)00033-9 | - |
dc.identifier.issn | 0376-7388 | - |
dc.identifier.scopusid | 2-s2.0-0029078628 | - |
dc.identifier.uri | https://scholarworks.unist.ac.kr/handle/201301/5927 | - |
dc.identifier.url | http://www.scopus.com/inward/record.url?partnerID=HzOxMe3b&scp=0029078628 | - |
dc.identifier.wosid | A1995RU45100003 | - |
dc.language | 영어 | - |
dc.publisher | ELSEVIER SCIENCE BV | - |
dc.title | Separation of CO2 by modified -Al203 membranes at high temperature | - |
dc.type | Article | - |
dc.description.journalRegisteredClass | scopus | - |
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