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Lee, Jae Sung
Eco-friendly Catalysis and Energy Lab
Research Interests
  • Photocatalytic water splitting, artificial photosynthesis, fuel cells, heterogeneous catalysis

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CHARACTERIZATION OF ZEOLITE-SUPPORTED PT-CU BIMETALLIC CATALYST BY XE-129 NMR AND EXAFS

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dc.contributor.author AHN, D.H. ko
dc.contributor.author Lee, Jae Sung ko
dc.contributor.author NOMURA, M. ko
dc.contributor.author SACHTLER, W.M.H. ko
dc.contributor.author MORETTI, G. ko
dc.contributor.author WOO, S.I. ko
dc.contributor.author RYOO, R. ko
dc.date.available 2015-07-29T00:58:38Z -
dc.date.created 2015-07-27 ko
dc.date.issued 1992-01 -
dc.identifier.citation JOURNAL OF CATALYSIS, v.133, no.1, pp.191 - 201 ko
dc.identifier.issn 0021-9517 ko
dc.identifier.uri https://scholarworks.unist.ac.kr/handle/201301/13025 -
dc.identifier.uri http://www.sciencedirect.com/science/article/pii/002195179290197P# ko
dc.description.abstract Samples of platinum supported on NaY zeolite (Pt/NaY), Cu/NaY, and bimetallic PtCu/NaY have been prepared by using a scheme that consists of ion exchange of the metalammine cations, activation in flowing O2, and subsequent reduction in H2. These samples have been characterized by 129Xe NMR and extended X-ray absorption fine structure (EXAFS). The chemical shift in 129Xe NMR of the xenon adsorbed on PtCu/NaY has been found to be significantly lower than that on Pt/NaY with the same Pt content under the same experimental conditions, and therefore bimetallic PtCu clusters are formed in supercages of NaY zeolite in both the cases of a sequential clustering method and a simultaneous ion exchange preparation method. The peak intensities at Pt-Pt coordination distance in the Fourier transforms of EXAFS spectra for Pt/NaY and PtCu/NaY are very similar, which indicates that the reduction of Cu precursor has resulted in no appreciable changes in the PtPt coordination structure of the Pt cluster. It thus appears, from these results, that during the reduction of Cu precursor the bimetallic PtCu clusters are formed with a model of a Cu covering on Pt clusters in the supercage of NaY zeolite. © 1992. ko
dc.description.statementofresponsibility close -
dc.language ENG ko
dc.publisher ACADEMIC PRESS INC ELSEVIER SCIENCE ko
dc.subject XE-129 NMR ko
dc.subject METAL-CLUSTERS ko
dc.subject Y-ZEOLITES ko
dc.subject NAY ko
dc.subject CHEMISORPTION ko
dc.subject SPECTROSCOPY ko
dc.subject ADSORPTION ko
dc.subject REDUCTION ko
dc.subject EXCHANGE ko
dc.title CHARACTERIZATION OF ZEOLITE-SUPPORTED PT-CU BIMETALLIC CATALYST BY XE-129 NMR AND EXAFS ko
dc.title.alternative CHARACTERIZATION OF ZEOLITE-SUPPORTED PT-CU BIMETALLIC CATALYST BY XE-129 NMR AND EXAFS ko
dc.type ARTICLE ko
dc.identifier.scopusid 2-s2.0-0000754759 ko
dc.identifier.wosid A1992GW16700016 ko
dc.type.rims ART ko
dc.description.wostc 26 *
dc.description.scopustc 25 *
dc.date.tcdate 2015-12-28 *
dc.date.scptcdate 2015-11-04 *
dc.identifier.doi 10.1016/0021-9517(92)90197-P ko
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