Cobalt supported on zirconia and sulfated zirconia II. reactivity of adsorbed NOx compounds toward methane

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dc.citation.epage371en_US
dc.citation.issueNumber2en_US
dc.citation.spage364en_US
dc.citation.volumeNumber223en_US
dc.contributor.authorKantcheva, M.en_US
dc.contributor.authorVakkasoglu, A. S.en_US
dc.date.accessioned2015-07-28T11:57:30Z
dc.date.available2015-07-28T11:57:30Z
dc.date.issued2004-04-25en_US
dc.departmentDepartment of Chemistryen_US
dc.description.abstractIn order to evaluate the effect of sulfate ions in zirconia-supported cobalt catalysts on the reactivity of adsorbed NOx species toward methane, experiments involving the interaction of the hydrocarbon with NOx-free and NOx-precovered catalysts are performed. The nitrate species formed at room-temperature adsorption of NO/O-2 over the CoOx/ZrO2 catalysts are inert toward the methane in the 573-723 K temperature range. Over NOx-precovered CoOx/SO42--ZrO2 catalysts, oxidation of the hydrocarbon starts at 573-623 K with the participation of reactive nitro-nitrato species coordinated to cobalt sites. It is proposed that in the catalytic reduction of NO over the sulfated cobalt catalysts, the activation of methane occurs on cobalt sites and the products of the latter process-formate species and formic acid-are key intermediates capable of selectively reducing the nitro-nitrato species. (C) 2004 Elsevier Inc. All rights reserved.en_US
dc.description.provenanceMade available in DSpace on 2015-07-28T11:57:30Z (GMT). No. of bitstreams: 1 10.1016-j.jcat.2004.02.006.pdf: 264607 bytes, checksum: 29b232cd1c7f72fdea3b4e47c17702af (MD5)en
dc.identifier.doi10.1016/j.jcat.2004.02.006en_US
dc.identifier.issn10.1016/j.jcat.2004.02.006
dc.identifier.urihttp://hdl.handle.net/11693/11367
dc.language.isoEnglishen_US
dc.publisherElsevieren_US
dc.relation.isversionofhttp://dx.doi.org/10.1016/j.jcat.2004.02.006en_US
dc.source.titleJournal of Catalysisen_US
dc.subjectIn situ FT - IRen_US
dc.subjectCoOx/ZrO2en_US
dc.subjectCoOx /ZrO2 – SO42−en_US
dc.subjectReactivity of stable surface NOx compoundsen_US
dc.subjectNOx selective catalytic reduction by methaneen_US
dc.subjectMechanismen_US
dc.titleCobalt supported on zirconia and sulfated zirconia II. reactivity of adsorbed NOx compounds toward methaneen_US
dc.typeArticleen_US

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