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DC Field | Value | Language |
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dc.citation.endPage | 185 | - |
dc.citation.number | 1-2 | - |
dc.citation.startPage | 179 | - |
dc.citation.title | JOURNAL OF MEMBRANE SCIENCE | - |
dc.citation.volume | 378 | - |
dc.contributor.author | Lim, Hankwon | - |
dc.contributor.author | Oyama, S. Ted | - |
dc.date.accessioned | 2023-12-22T06:06:33Z | - |
dc.date.available | 2023-12-22T06:06:33Z | - |
dc.date.created | 2018-07-31 | - |
dc.date.issued | 2011-08 | - |
dc.description.abstract | Thin and defect-free Pd-Cu composite membranes with high hydrogen permeances and selectivities were prepared by electroless plating of palladium and copper on porous alumina supports with pore sizes of 5 and 100 nm coated with intermediate layers. The intermediate layers on the 100 nm supports were prepared by the deposition of boehmite sols of different particle sizes, and provided a graded, uniform substrate for the formation of defect-free, ultra-thin palladium composite layers. The dependence of hydrogen flux on pressure difference was studied to understand the dominant mechanism of hydrogen transport through a Pd-Cu composite membrane plated on an alumina support with a pore size of 5 nm. The order in hydrogen pressure was 0.98, and indicated that bulk diffusion through the Pd-Cu layer was fast and the overall process was limited by external mass-transfer or a surface process. Scanning electron microscopy (SEM) images of the Pd-Cu composite membrane showed a uniform substrate created after depositing one intermediate layer on top of the alumina support and a dense Pd-Cu composite layer with no visible defects. Cross-sectional views of the membrane showed that the Pd-Cu composite layer had a top layer thickness of 160 nm (0.16 mu m), which is much thinner than previously reported. | - |
dc.identifier.bibliographicCitation | JOURNAL OF MEMBRANE SCIENCE, v.378, no.1-2, pp.179 - 185 | - |
dc.identifier.doi | 10.1016/j.memsci.2011.04.054 | - |
dc.identifier.issn | 0376-7388 | - |
dc.identifier.scopusid | 2-s2.0-79959995566 | - |
dc.identifier.uri | https://scholarworks.unist.ac.kr/handle/201301/24460 | - |
dc.identifier.url | https://www.sciencedirect.com/science/article/pii/S037673881100319X?via%3Dihub | - |
dc.identifier.wosid | 000293035100020 | - |
dc.language | 영어 | - |
dc.publisher | ELSEVIER SCIENCE BV | - |
dc.title | Hydrogen selective thin palladium-copper composite membranes on alumina supports | - |
dc.type | Article | - |
dc.description.journalRegisteredClass | scie | - |
dc.description.journalRegisteredClass | scopus | - |
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