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From powder to extrudate zeolite-based bifunctional hydroisomerization catalysts: on preserving zeolite integrity and optimizing Pt location

2018-06-25Journal article Restricted access
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dc.contributor.authorMendes, Pedro
dc.contributor.authorSilva, João
dc.contributor.authorRibeiro, M Filipa
dc.contributor.authorDaudin, Antoine
dc.contributor.authorBouchy, Christophe
dc.date.accessioned2018-02-21T10:18:07Z
dc.date.available2018-02-21T10:18:07Z
dc.date.issued2018-06-25
dc.description.abstractThe development of zeolite-based hydroisomerization catalysts in the powder form is widely spread in scientific literature but shaped bodies are the ones being employed in industry. This work aims at bridging that gap. The shaping procedure for HUSY zeolite in presence of an alumina binder disclosed herein achieved a full conservation of zeolite properties, e.g. porosity and Brønsted acidity. When Pt was located inside the zeolite and an homogeneous Pt distribution along the extrudate was ensured, shaped Pt-containing catalysts had similar hydroisomerization performances to those of powder Pt/zeolite in terms of turnover frequency per Brønsted acid site and maximal feed isomers yield. Conversely, non-uniform distribution of Pt along the extrudates diameter (millimetric scale) was observed to reduce the feed isomers yield. This was tentatively explained by the lower local metal to acid sites ratio in the core of the extrudates. Optimal performance of shaped bifunctional catalysts requires, hence, an adequate metal to acid sites ratio throughout the whole catalyst (i.e. at millimetric and nanometric scale), even if full intimacy between catalytic functions is ensured at the nanoscale by the selective deposition of Pt inside the zeolite.pt_PT
dc.description.versioninfo:eu-repo/semantics/publishedVersionpt_PT
dc.identifier.citationSILVA, João M.; [et al] – From powder to extrudate zeolite-based bifunctional hydroisomerization catalysts: on preserving zeolite integrity and optimizing Pt location. Journal of Industrial and Engineering Chemistry. ISSN 1226-086X. Vol. 62 (2018), pp. 72-83pt_PT
dc.identifier.doihttps://doi.org/10.1016/j.jiec.2017.12.046pt_PT
dc.identifier.issn1226-086X
dc.identifier.urihttp://hdl.handle.net/10400.21/8080
dc.language.isoengpt_PT
dc.peerreviewedyespt_PT
dc.publisherElsevierpt_PT
dc.relationSYNERGIES BETWEEN ZEOLITES ON A MODEL HYDROCRACKING REACTION, FROM IDEALITY TO REALITY
dc.relation.publisherversionhttps://ac.els-cdn.com/S1226086X17307086/1-s2.0-S1226086X17307086-main.pdf?_tid=4f68c4d4-16ef-11e8-a88e-00000aacb35e&acdnat=1519207960_0f7ce6249554e93e59ee791ee6673743pt_PT
dc.subjectHydroisomerizationpt_PT
dc.subjectZeolite shapingpt_PT
dc.subjectHUSYpt_PT
dc.subjectMetal-acid balancept_PT
dc.subjectMetal-acid intimacypt_PT
dc.titleFrom powder to extrudate zeolite-based bifunctional hydroisomerization catalysts: on preserving zeolite integrity and optimizing Pt locationpt_PT
dc.typejournal article
dspace.entity.typePublication
oaire.awardTitleSYNERGIES BETWEEN ZEOLITES ON A MODEL HYDROCRACKING REACTION, FROM IDEALITY TO REALITY
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/5876/UID%2FQUI%2F00100%2F2013/PT
oaire.awardURIinfo:eu-repo/grantAgreement/FCT//SFRH%2FBD%2F87927%2F2012/PT
oaire.citation.endPage83pt_PT
oaire.citation.startPage72pt_PT
oaire.citation.titleJournal of Industrial and Engineering Chemistrypt_PT
oaire.citation.volume62
oaire.fundingStream5876
person.familyNameFreitas Mendes
person.familyNameSilva
person.familyNameRibeiro
person.familyNameDaudin
person.familyNameBouchy
person.givenNamePedro Simão
person.givenNameJoão Miguel Alves da
person.givenNameM Filipa
person.givenNameAntoine
person.givenNameChristophe
person.identifierfWmw7kEAAAAJ
person.identifier.ciencia-id2818-5E65-1249
person.identifier.ciencia-id3D1F-BD3A-4A9D
person.identifier.ciencia-idC810-17B5-EC05
person.identifier.orcid0000-0002-2768-353X
person.identifier.orcid0000-0003-1244-6483
person.identifier.orcid0000-0001-9538-821X
person.identifier.orcid0000-0003-3789-5277
person.identifier.orcid0000-0002-1414-0333
person.identifier.ridS-4781-2016
person.identifier.ridF-8581-2013
person.identifier.ridF-8581-2018
person.identifier.scopus-author-id56585480300
person.identifier.scopus-author-id16317291000
person.identifier.scopus-author-id57191514529
person.identifier.scopus-author-id6602758572
project.funder.identifierhttp://doi.org/10.13039/501100001871
project.funder.identifierhttp://doi.org/10.13039/501100001871
project.funder.nameFundação para a Ciência e a Tecnologia
project.funder.nameFundação para a Ciência e a Tecnologia
rcaap.rightsclosedAccesspt_PT
rcaap.typearticlept_PT
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