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DC Field | Value | Language |
---|---|---|
dc.citation.endPage | 347 | - |
dc.citation.number | 2 | - |
dc.citation.startPage | 334 | - |
dc.citation.title | JOURNAL OF CATALYSIS | - |
dc.citation.volume | 218 | - |
dc.contributor.author | Kim, Won Bae | - |
dc.contributor.author | Park, Eun Duck | - |
dc.contributor.author | Lee, Chul Woo | - |
dc.contributor.author | Lee, Jae Sung | - |
dc.date.accessioned | 2023-12-22T11:09:34Z | - |
dc.date.available | 2023-12-22T11:09:34Z | - |
dc.date.created | 2015-07-24 | - |
dc.date.issued | 2003-09 | - |
dc.description.abstract | Active states of palladium and copper for the oxidative carbonylation of phenol and bisphenol-A were investigated using X-ray absorption near-edge structure (XANES) and extended X-ray absorption fine structure (EXAFS) for Pd and Cu K-edges. The initial states of Pd and Cu were carbon-supported metallic Pd and cuprous oxide, respectively. During oxidative carbonylation, however, the metallic character of palladium was enhanced, as indicated by Pd K-edge XANES spectra taken before and after the reaction. Furthermore, Pd-Pd coordination number increased from ca. 6.0 to 11.0, as determined by the quantitative EXAFS analyses of Pd K-edge. The initial crystalline cuprous oxide was converted by reaction with Bu4NBr into an unusual linear cuprous dibromide complex stabilized by tetrabutylammonium cation. Qualitative XANES and EXAFS analyses of Cu K-edge identified the structural and electronic configuration of the cuprous complex that was found to be the active main catalyst. There was a direct correlation between the formation of the cuprous complex and the catalytic activity and selectivity. Based on these results, a possible catalytic reaction scheme was proposed for the oxidative carbonylation of phenols with the catalytic system of Pd/C, an inorganic cuprous compound and Bu4NBr. (C) 2003 Elsevier Inc. All rights reserved | - |
dc.identifier.bibliographicCitation | JOURNAL OF CATALYSIS, v.218, no.2, pp.334 - 347 | - |
dc.identifier.doi | 10.1016/S0021-9517(03)00089-7 | - |
dc.identifier.issn | 0021-9517 | - |
dc.identifier.scopusid | 2-s2.0-0043135243 | - |
dc.identifier.uri | https://scholarworks.unist.ac.kr/handle/201301/12523 | - |
dc.identifier.url | http://www.sciencedirect.com/science/article/pii/S0021951703000897 | - |
dc.identifier.wosid | 000184372600011 | - |
dc.language | 영어 | - |
dc.publisher | ACADEMIC PRESS INC ELSEVIER SCIENCE | - |
dc.title.alternative | Nature and role of active states of Pd and Cu in the oxidative carbonylation of phenols with Pd/C and cuprous oxide | - |
dc.title | Nature and role of active states of Pd and Cu in the oxidative carbonylation of phenols with Pd/C and cuprous oxide | - |
dc.type | Article | - |
dc.description.journalRegisteredClass | scopus | - |
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