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College of Engineering(공과대학)Dept. of Chemical and Biomolecular Engineering(생명화학공학과)CBE-Journal Papers(저널논문)

Characteristics of Pt/WO3/CeO2/ZrO2 Catalysts for catalytic reduction of NO by CO

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dc.contributor.authorZhu, Hai-ouko
dc.contributor.authorKim, Jeong-Rangko
dc.contributor.authorIhm, Son Kiko
dc.date.accessioned2013-08-08T04:48:15Z-
dc.date.available2013-08-08T04:48:15Z-
dc.date.created2012-02-06-
dc.date.created2012-02-06-
dc.date.issued2009-02-
dc.identifier.citationAPPLIED CATALYSIS B-ENVIRONMENTAL, v.86, no.1-2, pp.87 - 92-
dc.identifier.issn0926-3373-
dc.identifier.urihttp://hdl.handle.net/10203/174333-
dc.description.abstractVarious supported Pt catalysts (Pt/WO3/CeO2/ZrO2; Pt/ZrO2, Pt/CeO2, Pt/CeZrO, Pt/WO3/ZrO2, and Pt/WO3/CeZrO) were prepared and characterized, and their characteristics of catalytic reductions of NO by CO with or without oxygen were investigated. TPR and CO-TPD showed that Pt/CeO2 and Pt/CeZrO could be easily reduced by CO while the reduction by CO was inhibited with the introduction of WO3 in the Case Of Pt/WO3/CeZrO. According to NO-TPD, NO reduction could not proceed over the catalysts (Pt/WO3/CeZrO, Pt/ZrO2, Pt/WO3/ZrO2) to remain in an oxidized state even after reduction by CO, but NO reduction was possible over Pt/CeO2 and Pt/CeZrO catalysts when reduced by CO. For NO + CO reaction without oxygen, those easily reducible catalysts (Pt/CeO2 and Pt/CeZrO) exhibited better catalytic performances. With excess oxygen, however, Pt/WO3/CeZrO and Pt/WO3/ZrO2 catalysts exhibited higher NO conversions to N-2 and N2O especially at a low temperature. The acidity from ZrO2 and WO3 in Pt/WO3/CeO2/ZrO2 catalysts should play an important role on their NO conversion only in the presence of excess oxygen. (C) 2008 Elsevier B.V. All rights reserved.-
dc.languageEnglish-
dc.publisherElsevier Science Bv-
dc.subjectOXYGEN STORAGE CAPACITY-
dc.subjectCEO2-ZRO2 MIXED OXIDES-
dc.subjectTUNGSTATED ZIRCONIA-
dc.subjectSELECTIVE REDUCTION-
dc.subjectSOLID-SOLUTIONS-
dc.subjectBEHAVIOR-
dc.subjectCH4-
dc.subjectPD-
dc.subjectSUPPORTS-
dc.subjectMETHANE-
dc.titleCharacteristics of Pt/WO3/CeO2/ZrO2 Catalysts for catalytic reduction of NO by CO-
dc.typeArticle-
dc.identifier.wosid000262887700011-
dc.identifier.scopusid2-s2.0-58049143195-
dc.type.rimsART-
dc.citation.volume86-
dc.citation.issue1-2-
dc.citation.beginningpage87-
dc.citation.endingpage92-
dc.citation.publicationnameAPPLIED CATALYSIS B-ENVIRONMENTAL-
dc.identifier.doi10.1016/j.apcatb.2008.07.024-
dc.contributor.localauthorIhm, Son Ki-
dc.contributor.nonIdAuthorZhu, Hai-ou-
dc.type.journalArticleArticle-
dc.subject.keywordAuthorPt-
dc.subject.keywordAuthorCeO2-
dc.subject.keywordAuthorZrO2-
dc.subject.keywordAuthorCeO2-ZrO2-
dc.subject.keywordAuthorPrecipitation-
dc.subject.keywordAuthorWO3-
dc.subject.keywordAuthorNO plus CO reaction-
dc.subject.keywordAuthorExcess oxygen-
dc.subject.keywordAuthorAcidity-
dc.subject.keywordAuthorPt dispersion-
dc.subject.keywordPlusOXYGEN STORAGE CAPACITY-
dc.subject.keywordPlusCEO2-ZRO2 MIXED OXIDES-
dc.subject.keywordPlusTUNGSTATED ZIRCONIA-
dc.subject.keywordPlusSELECTIVE REDUCTION-
dc.subject.keywordPlusSOLID-SOLUTIONS-
dc.subject.keywordPlusBEHAVIOR-
dc.subject.keywordPlusCH4-
dc.subject.keywordPlusPD-
dc.subject.keywordPlusSUPPORTS-
dc.subject.keywordPlusMETHANE-
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