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DC Field | Value | Language |
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dc.citation.endPage | 535 | - |
dc.citation.number | 2 | - |
dc.citation.startPage | 525 | - |
dc.citation.title | JOURNAL OF CATALYSIS | - |
dc.citation.volume | 138 | - |
dc.contributor.author | WOO, HEE CHUL | - |
dc.contributor.author | NAM, IN-SIK | - |
dc.contributor.author | Lee, Jae Sung | - |
dc.contributor.author | CHUNG, JONG SHIK | - |
dc.contributor.author | LEE, KYUNG HEE | - |
dc.contributor.author | KIM, YOUNG GUL | - |
dc.date.accessioned | 2023-12-22T13:06:59Z | - |
dc.date.available | 2023-12-22T13:06:59Z | - |
dc.date.created | 2015-07-27 | - |
dc.date.issued | 1992-12 | - |
dc.description.abstract | Potassium-promoted MoS2 is used as a catalyst for mixed alcohol synthesis from CO and H2. This study investigates the room-temperature oxidation of the catalyst and its effect on the surface structure and catalytic activity in alcohol synthesis at 573 K and 1.5 MPa. Catalysts were stored in the atmosphere or in a vacuum oven for several weeks. The characterization of catalyst was performed using XRD, XPS, FT-IR, and TGA/DTA methods. The XPS data of K2CO3/MoS2 stored in the atmosphere for extended periods indicated the oxidations of Mo(IV) (as sulfide) to Mo(VI) (as oxide) as well as S2- (as sulfide) to S6+ (as sulfate) on the MoS2 surface. The IR results showed that sulfate species first produced by oxidation had Td symmetry, which was further transformed into C2ν (bidentate) upon a prolonged storage. The sulfate species formed on the catalyst surface were stable until they were decomposed above 1000 K. The oxidized K2CO3/MoS2 catalyst showed enhanced catalytic activity and high selectivity to C2+ hydrocarbons, rather than forming alcohols as did fresh K2CO3/MoS2. These modified catalytic properties were similar to those of fresh K2SO4/MoS2. © 1992. | - |
dc.identifier.bibliographicCitation | JOURNAL OF CATALYSIS, v.138, no.2, pp.525 - 535 | - |
dc.identifier.doi | 10.1016/0021-9517(92)90304-Z | - |
dc.identifier.issn | 0021-9517 | - |
dc.identifier.scopusid | 2-s2.0-0043074339 | - |
dc.identifier.uri | https://scholarworks.unist.ac.kr/handle/201301/13014 | - |
dc.identifier.url | http://www.sciencedirect.com/science/article/pii/002195179290304Z | - |
dc.identifier.wosid | A1992KB66800010 | - |
dc.language | 영어 | - |
dc.publisher | ACADEMIC PRESS INC ELSEVIER SCIENCE | - |
dc.title.alternative | ROOM-TEMPERATURE OXIDATION OF K2CO3/MOS2 CATALYSTS AND ITS EFFECTS ON ALCOHOL SYNTHESIS FROM CO AND H2 | - |
dc.title | ROOM-TEMPERATURE OXIDATION OF K2CO3/MOS2 CATALYSTS AND ITS EFFECTS ON ALCOHOL SYNTHESIS FROM CO AND H2 | - |
dc.type | Article | - |
dc.description.journalRegisteredClass | scopus | - |
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