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Catalytic combustion of toluene on Pt zeolite coated cordierite foams

2011-11-01Journal article Open access
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dc.contributor.authorRibeiro, Filipa
dc.contributor.authorSilva, João
dc.contributor.authorSilva, Elisabete
dc.contributor.authorVaz, M. Fátima
dc.contributor.authorOliveira, Fernando A. C.
dc.date.accessioned2013-01-30T19:30:37Z
dc.date.available2013-01-30T19:30:37Z
dc.date.issued2011-11-01
dc.description.abstractThe catalytic properties of Pt based cordierite foam catalysts have been evaluated in catalytic combustion of toluene (800 ppm in air). The catalysts contain identical Pt content (0.1%) which was introduced by three different ways: Pt ion exchange on MFI zeolite and then coating on the foam; Pt ion exchange after zeolite coating and finally Pt directly wet impregnated on the cordierite foam. The catalytic behaviour of Pt foam based catalysts was compared with that of PtMFI zeolite under powder form. Pt exchanged MFI supported on the cordierite foams present an improvement of activity for toluene combustion of about 50 degrees C on the light off temperature (T-50%). The enhanced performance of the structured catalysts is due not only to the open structure of foams and homogeneous thin layers catalyst deposited on their cell walls, but also to the fact that the size and location of Pt particles present in MFI zeolite are changed during the dipping step. Indeed, as prepared Pt samples and those used in the preparation of the slurry were observed by transmission electron microscopy revealing that the chemical interaction of PtMFI zeolite with the binder and detergent, both present in the slurry, leads to an increase of Pt particles size which were found to migrate from internal pores to the external surface of zeolite crystallites thereby increasing catalytic activity. (C) 2011 Elsevier B.V. All rights reserved.por
dc.identifier.citationRIBEIRO, Filipa; SILVA, João M.; SILVA, Elisabete; VAZ, M. Fátima; OLIVEIRA, Fernando A. C. - Catalytic combustion of toluene on Pt zeolite coated cordierite foams. Catalysis Today. ISSN 0920-5861. Vol. 176, n.º 1 (2011) p. 93-96.por
dc.identifier.issn0920-5861
dc.identifier.urihttp://hdl.handle.net/10400.21/2115
dc.language.isoengpor
dc.peerreviewedyespor
dc.publisherElsevier Science BVpor
dc.subjectCordierite foampor
dc.subjectZeolite washcoatingpor
dc.subjectToluene combustionpor
dc.subjectPtpor
dc.subjectMFIpor
dc.subjectVolatile organic-compoundspor
dc.subjectCompounds vocspor
dc.subjectEnvironmental applicationspor
dc.subjectOxidationpor
dc.subjectReactorspor
dc.subjectXylenepor
dc.titleCatalytic combustion of toluene on Pt zeolite coated cordierite foamspor
dc.typejournal article
dspace.entity.typePublication
oaire.citation.conferencePlaceAmsterdampor
oaire.citation.endPage96por
oaire.citation.issue1por
oaire.citation.startPage93por
oaire.citation.titleCatalysis Todaypor
oaire.citation.volume176por
person.familyNameSilva
person.givenNameJoão Miguel Alves da
person.identifierfWmw7kEAAAAJ
person.identifier.ciencia-id3D1F-BD3A-4A9D
person.identifier.orcid0000-0003-1244-6483
person.identifier.scopus-author-id16317291000
rcaap.rightsrestrictedAccesspor
rcaap.typearticlepor
relation.isAuthorOfPublication36449517-d0f7-4619-aae3-81af776b82fd
relation.isAuthorOfPublication.latestForDiscovery36449517-d0f7-4619-aae3-81af776b82fd

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