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Incorporation of niobium in SAPO-11 materials: Synthesis and characterization

2011-09Journal article Open access
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dc.contributor.authorBertolo, Raquel
dc.contributor.authorMartins, Angela
dc.contributor.authorSilva, João
dc.contributor.authorRibeiro, Filipa
dc.contributor.authorRibeiro, Fernando Ramoa
dc.contributor.authorFernandes, Auguste
dc.date.accessioned2013-02-15T15:14:30Z
dc.date.available2013-02-15T15:14:30Z
dc.date.issued2011-09
dc.description.abstractThe present work concerns a new synthesis approach to prepare niobium based SAPO materials with AEL structure and the characterization ofNb species incorporated within the inorganic matrixes. The SAPO-11 materials were synthesized with or without the help of a small amine, methylamine (MA) as co-template, while Nb was added directly during the preparation of the initial gel. Structural, textural and acidic properties of the different supports were evaluated by XRD, TPR, UV-Vis spectroscopy, pyridine adsorption followed by IR spectroscopy and thermal analyses. Pure and well crystalline Nb based SAPO-11 materials were obtained, either with or without MA, using in the initial gel a low Si content of about 0.6. Increasing the Si content of the gel up to 0.9 led to an important decrease of the samples crystallinity. Niobium was found to incorporate the AEL pores support as small Nb2O5 oxide particles and also as extra framework cationic species (Nb5+), compensating the negative charges from the matrix and generating new Lewis acid sites. (C) 2011 Elsevier Inc. All rights reserved.por
dc.identifier.citationBERTOLO, Raquel; MARTINS, Angela; SILVA, João Miguel; RIBEIRO, Filipa; RIBEIRO, Fernando Ramoa; FERNANDES, Auguste - Incorporation of niobium in SAPO-11 materials: Synthesis and characterization. Microporous and Mesoporous Materials. ISSN 1387-1811. Vol. 143, n.º 3-4 (2011) p. 284-290.por
dc.identifier.issn1387-1811
dc.identifier.urihttp://hdl.handle.net/10400.21/2206
dc.language.isoengpor
dc.peerreviewedyespor
dc.publisherElsevier Science BVpor
dc.subjectNiobiumpor
dc.subjectSAPO-11por
dc.subjectMethylaminepor
dc.subjectAciditypor
dc.subjectAEL Structurepor
dc.subjectMolecular-Sievespor
dc.subjectContaining MCM-41por
dc.subjectCatalystspor
dc.subjectAciditypor
dc.subjectCrystallinitypor
dc.subjectAdsorptionpor
dc.subjectFrameworkspor
dc.subjectZeolitespor
dc.subjectSilicapor
dc.subjectOxidepor
dc.titleIncorporation of niobium in SAPO-11 materials: Synthesis and characterizationpor
dc.typejournal article
dspace.entity.typePublication
oaire.citation.conferencePlaceAmsterdampor
oaire.citation.endPage290por
oaire.citation.issue3-4por
oaire.citation.startPage284por
oaire.citation.titleMicroporous and Mesoporous Materialspor
oaire.citation.volume143por
person.familyNameSilva
person.familyNameFernandes
person.givenNameJoão Miguel Alves da
person.givenNameAuguste
person.identifierfWmw7kEAAAAJ
person.identifier.ciencia-id3D1F-BD3A-4A9D
person.identifier.ciencia-idDC14-6209-7347
person.identifier.orcid0000-0003-1244-6483
person.identifier.orcid0000-0001-6545-073X
person.identifier.ridK-6693-2012
person.identifier.scopus-author-id16317291000
person.identifier.scopus-author-id14059748900
rcaap.rightsrestrictedAccesspor
rcaap.typearticlepor
relation.isAuthorOfPublication36449517-d0f7-4619-aae3-81af776b82fd
relation.isAuthorOfPublicationf7ec512c-5044-4283-b2bd-f2a8eb9d4a2c
relation.isAuthorOfPublication.latestForDiscovery36449517-d0f7-4619-aae3-81af776b82fd

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