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College of Natural Sciences(자연과학대학)Dept. of Chemistry(화학과)CH-Journal Papers(저널논문)

CHEMISORPTION OF H2 ON SUPPORTED PT CLUSTERS PROBED BY XE-129 NMR

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dc.contributor.authorBOUDART, Mko
dc.contributor.authorRyoo, Ryongko
dc.contributor.authorVALENCA, GPko
dc.contributor.authorVANGRIEKEN, Rko
dc.date.accessioned2009-11-13T01:42:41Z-
dc.date.available2009-11-13T01:42:41Z-
dc.date.created2012-02-06-
dc.date.created2012-02-06-
dc.date.issued1993-
dc.identifier.citationCATALYSIS LETTERS, v.17, no.3-4, pp.273 - 283-
dc.identifier.issn1011-372X-
dc.identifier.urihttp://hdl.handle.net/10203/12549-
dc.description.abstractThe surface of Pt clusters with average size between 1 and 8 nm supported on SiO2, gamma-Al2O3 or Y-zeolite was probed by Xe-129 NMR as the Pt surface coverage with hydrogen, theta, was increased. A distinct change in the structure of the hydrogen overlayer at theta almost-equal-to 0.3 was inferred from. the NMR spectra. This change is believed to take place when the chemisorbed hydrogen fills all the next nearest neighbor metal sites and the nearest neighbors start to be occupied. These new observations clarify previously reported determinations of the average number of Pt atoms in supported clusters by means of Xe NMR and other techniques. It also appears that interfacial metal-support interactions may be probed by Xe NMR.-
dc.description.sponsorshipRR and RVG thank KOSEF and the Complutense University of Madrid for partial support, respectively. The work was otherwise supported by DOE Grant DE-FG03-87ER13762. We acknowledge discussions with Jacques Fraissard, who also helped us by providing a secondary reference sample. Thanks are due to Professor Jonathan Stebbins and Ian Farnam for many fruitful discussions.en
dc.languageEnglish-
dc.language.isoen_USen
dc.publisherBALTZER SCI PUBL BV-
dc.subjectY-ZEOLITE-
dc.subjectXENON-
dc.subjectPLATINUM-
dc.subjectSPECTROSCOPY-
dc.subjectDISPERSION-
dc.titleCHEMISORPTION OF H2 ON SUPPORTED PT CLUSTERS PROBED BY XE-129 NMR-
dc.typeArticle-
dc.subject.alternativeY-ZEOLITEen
dc.subject.alternativeXENONen
dc.subject.alternativePLATINUMen
dc.subject.alternativeSPECTROSCOPYen
dc.subject.alternativeDISPERSIONen
dc.identifier.wosidA1993KN35500009-
dc.identifier.scopusid2-s2.0-0000313030-
dc.type.rimsART-
dc.citation.volume17-
dc.citation.issue3-4-
dc.citation.beginningpage273-
dc.citation.endingpage283-
dc.citation.publicationnameCATALYSIS LETTERS-
dc.embargo.liftdate9999-12-31-
dc.embargo.terms9999-12-31-
dc.contributor.localauthorRyoo, Ryong-
dc.contributor.nonIdAuthorBOUDART, M-
dc.contributor.nonIdAuthorVALENCA, GP-
dc.contributor.nonIdAuthorVANGRIEKEN, R-
dc.type.journalArticleArticle-
dc.subject.keywordAuthorCHEMISORPTION OF H2 ON PT-
dc.subject.keywordAuthorXE NMR-
dc.subject.keywordAuthorMETAL SUPPORT INTERACTION-
dc.subject.keywordPlusY-ZEOLITE-
dc.subject.keywordPlusXENON-
dc.subject.keywordPlusPLATINUM-
dc.subject.keywordPlusSPECTROSCOPY-
dc.subject.keywordPlusDISPERSION-
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