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DC Field | Value | Language |
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dc.citation.endPage | 1026 | - |
dc.citation.number | 6 | - |
dc.citation.startPage | 1020 | - |
dc.citation.title | ACS CATALYSIS | - |
dc.citation.volume | 2 | - |
dc.contributor.author | She, Xiaoyan | - |
dc.contributor.author | Kwak, Jahun | - |
dc.contributor.author | Sun, Junming | - |
dc.contributor.author | Hu, Jianzhi | - |
dc.contributor.author | Hu, Mary Y. | - |
dc.contributor.author | Wang, Chongmin | - |
dc.contributor.author | Peden, Charles H. F. | - |
dc.contributor.author | Wang, Yong | - |
dc.date.accessioned | 2023-12-22T05:07:47Z | - |
dc.date.available | 2023-12-22T05:07:47Z | - |
dc.date.created | 2015-07-20 | - |
dc.date.issued | 2012-06 | - |
dc.description.abstract | SBA-15 silica supported rhenium catalysts were synthesized using solution-based atomic layer deposition method, and their activity and stability were studied in the acid-catalyzed 2-butanol dehydration. We find that ReOx/SBA-15 exhibited an extremely high initial activity but a fast deactivation for 2-butanol dehydration at 90-105 degrees C. Fast deactivation was likely due to the sintering, sublimation, and reduction of rhenia as confirmed by TEM, elemental analysis, and in situ UV-vis (DRS) measurements. To overcome these issues, ReOx/AlOx/SBA-15 catalysts with significantly improved stability were prepared by first modifying the surface identity of SBA-15 with alumina followed by dispersion of rhenia using atomic layer deposition. The AlOx phase stabilizes the dispersion of small and uniform rhenia clusters (<2 nm) as as confirmed by TEM, STEM, and UV-vis (DRS) characterizations. Additional Al-27 MAS NMR characterization revealed that modification of the SBA-15 surface with alumina introduces a strong interaction between rhenia and alumina, which consequently improves the stability of supported rhenia catalysts by suppressing the sintering, sublimation, and reduction of rhenia albeit at a moderately reduced initial catalytic dehydration activity | - |
dc.identifier.bibliographicCitation | ACS CATALYSIS, v.2, no.6, pp.1020 - 1026 | - |
dc.identifier.doi | 10.1021/cs2006444 | - |
dc.identifier.issn | 2155-5435 | - |
dc.identifier.scopusid | 2-s2.0-84861815685 | - |
dc.identifier.uri | https://scholarworks.unist.ac.kr/handle/201301/12291 | - |
dc.identifier.url | http://pubs.acs.org/doi/abs/10.1021/cs2006444 | - |
dc.identifier.wosid | 000304682600015 | - |
dc.language | 영어 | - |
dc.publisher | AMER CHEMICAL SOC | - |
dc.title.alternative | Highly Dispersed and Active ReOx on Alumina-Modified SBA-15 Silica for 2-Butanol Dehydration | - |
dc.title | Highly Dispersed and Active ReOx on Alumina-Modified SBA-15 Silica for 2-Butanol Dehydration | - |
dc.type | Article | - |
dc.description.journalRegisteredClass | scie | - |
dc.description.journalRegisteredClass | scopus | - |
dc.subject.keywordAuthor | rhenia catalyst | - |
dc.subject.keywordAuthor | catalyst stability | - |
dc.subject.keywordAuthor | 2-butanol dehydration | - |
dc.subject.keywordAuthor | SBA-15 | - |
dc.subject.keywordAuthor | in situ UV-vis (DRS) | - |
dc.subject.keywordAuthor | aberration-corrected TEM | - |
dc.subject.keywordAuthor | Al-27 MAS NMR | - |
dc.subject.keywordPlus | RHENIUM OXIDE CATALYSTS | - |
dc.subject.keywordPlus | CARBON-SUPPORTED PLATINUM | - |
dc.subject.keywordPlus | MESOPOROUS SILICA | - |
dc.subject.keywordPlus | TUNGSTEN-OXIDE | - |
dc.subject.keywordPlus | OLEFIN METATHESIS | - |
dc.subject.keywordPlus | SELECTIVE OXIDATION | - |
dc.subject.keywordPlus | RAMAN-SPECTROSCOPY | - |
dc.subject.keywordPlus | SYNTHESIS GAS | - |
dc.subject.keywordPlus | SURFACE | - |
dc.subject.keywordPlus | HYDROGENATION | - |
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