Activity of Mo(II) allylic complexes supported in MCM-41 as oxidation catalysts precursors

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dc.contributor.authorSaraiva, Marta S.
dc.contributor.authorDias Filho, Newton L. [UNESP]
dc.contributor.authorNunes, Carla D.
dc.contributor.authorVaz, Pedro D.
dc.contributor.authorNunes, Teresa G.
dc.contributor.authorCalhorda, Maria Jose
dc.contributor.institutionUniv Lisbon
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.contributor.institutionInst Super Tecn
dc.date.accessioned2014-05-20T13:29:50Z
dc.date.available2014-05-20T13:29:50Z
dc.date.issued2009-01-15
dc.description.abstract[Mo(eta(3)-C(3)H(5))X(CO)(2)(NCCH(3))(2)] (X = Br, 1a; X = Cl, 1b) complexes reacted with the bidentate ligand RN=C(Ph)-C(Ph)=NR, R = (CH(2))(2)CH(3) (DAB, 2) affording [Mo(eta(3)-C(3)H(5))X(CO)(2)(DAB)] (X = Br, 4a; X = Cl, 4b), which were characterized by elemental analysis, FTIR and (1)H and (13)C NMR spectroscopy. The modified silylated ligand RN=C(Ph (Ph =NR, R = (CH(2))(3)Si(OCH(2)CH(3))(3) (DAB-Si, 3), was used to immobilize the two complexes in MCM-41 (MCM) mesoporous silica. The new materials were characterized by powder X-ray diffraction, N(2) adsorption analysis, FTIR and (29)Si and (13)C CPMAS solid state NMR spectroscopy. Both the materials and the complexes were tested in the oxidation of cyclooctene and styrene and behaved as active catalyst precursors for cyclooctene and styrene epoxidation with TBHP (t-butylhydroperoxide), leading selectively to epoxides with high conversions and TOFs. Although the homogeneous systems reach 100% conversion of cyclooctene and slightly less for styrene, the loss of catalytic activity in the heterogeneous systems is small, with a 98% conversion of styrene achieved by the chloride containing material. (c) 2008 Elsevier B.V. All rights reserved.en
dc.description.affiliationUniv Lisbon, Fac Ciencias, CQB, Dept Quim & Bioquim, P-1749016 Lisbon, Portugal
dc.description.affiliationUniv Estadual Paulista, Fac Eng Ilha Solteira, Dept Quim & Fis, BR-15385000 Ilha Solteira, SP, Brazil
dc.description.affiliationInst Super Tecn, Ctr Quim Estrutural, P-1049001 Lisbon, Portugal
dc.description.affiliationUnespUniv Estadual Paulista, Fac Eng Ilha Solteira, Dept Quim & Fis, BR-15385000 Ilha Solteira, SP, Brazil
dc.description.sponsorshipFCT
dc.description.sponsorshipFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
dc.description.sponsorshipCoordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)
dc.description.sponsorshipPró-Reitoria de Pesquisa da UNESP (PROPe UNESP)
dc.description.sponsorshipIdFCT: SFRH/BPD/27344/2006
dc.description.sponsorshipIdFCT: SFRH/BPD/28149/2006
dc.format.extent670-677
dc.identifierhttp://dx.doi.org/10.1016/j.micromeso.2008.08.012
dc.identifier.citationMicroporous and Mesoporous Materials. Amsterdam: Elsevier B.V., v. 117, n. 3, p. 670-677, 2009.
dc.identifier.doi10.1016/j.micromeso.2008.08.012
dc.identifier.issn1387-1811
dc.identifier.urihttp://hdl.handle.net/11449/10110
dc.identifier.wosWOS:000262119200019
dc.language.isoeng
dc.publisherElsevier B.V.
dc.relation.ispartofMicroporous and Mesoporous Materials
dc.relation.ispartofjcr3.649
dc.relation.ispartofsjr1,080
dc.rights.accessRightsAcesso restrito
dc.sourceWeb of Science
dc.subjectMolybdenumen
dc.subjectMesoporous materialsen
dc.subjectCatalysisen
dc.subjectEpoxidationen
dc.subjectMCM-41en
dc.titleActivity of Mo(II) allylic complexes supported in MCM-41 as oxidation catalysts precursorsen
dc.typeArtigo
dcterms.licensehttp://www.elsevier.com/about/open-access/open-access-policies/article-posting-policy
dcterms.rightsHolderElsevier B.V.
unesp.campusUniversidade Estadual Paulista (Unesp), Faculdade de Engenharia, Ilha Solteirapt

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