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A 5-(2-Pyridyl) tetrazolate complex of Molybdenum(VI), its structure, and transformation to a Molybdenum Oxide-Based Hybrid Heterogeneous Catalyst for the Epoxidation of Olefins

2021-11Journal article Open Access
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dc.contributor.authorNunes, Martinique S.
dc.contributor.authorGomes, Diana M.
dc.contributor.authorGomes, Ana C.
dc.contributor.authorNeves, Patrícia
dc.contributor.authorMendes, Ricardo F.
dc.contributor.authorPaz, Filipe A. Almeida
dc.contributor.authorLopes, A. D.
dc.contributor.authorValente, Anabela A.
dc.contributor.authorGonçalves, Isabel S.
dc.contributor.authorPillinger, Martyn
dc.date.accessioned2021-12-13T14:38:11Z
dc.date.available2021-12-13T14:38:11Z
dc.date.issued2021-11
dc.description.abstractThere is a considerable practical interest in discovering new ways to obtain organomolybdenum heterogeneous catalysts for olefin epoxidation that are easier to recover and reuse and display enhanced productivity. In this study, the complex salt (H2pytz)[MoO2Cl2 (pytz)] (1) (Hpytz = 5-(2-pyridyl)tetrazole) has been prepared, structurally characterized, and employed as a precursor for the hydrolysis-based synthesis of a microcrystalline molybdenum oxide/organic hybrid material formulated as [MoO3 (Hpytz)] (2). In addition to single-crystal X-ray diffraction (for 1), compounds 1 and 2 were characterized by FT-IR and Raman spectroscopies, solid-state 13C{1H} cross-polarization (CP) magic-angle spinning (MAS) NMR, and scanning electron microscopy (SEM). Compounds 1 and 2 were evaluated as olefin epoxidation catalysts using the model reaction of cis-cyclooctene (Cy8) with tert-butyl hydroperoxide (TBHP), at 70 ◦C, which gave 100% epoxide selectivity up to 100% conversion. While 1 behaved as a homogeneous catalyst, hybrid 2 behaved as a heterogeneous catalyst and could be recovered for recycling without showing structural degradation or loss of catalytic performance over consecutive reaction cycles. The substrate scope was broadened to monoterpene DL-limonene (Lim) and biobased unsaturated fatty acid methyl esters, methyl oleate (MeOle), and methyl linoleate (MeLin), which gave predominantly epoxide products.pt_PT
dc.description.sponsorshipPOCI-01-0145-FEDER-030075; 2021.06403.BD, 2021.04756.BD
dc.description.versioninfo:eu-repo/semantics/publishedVersionpt_PT
dc.identifier.doi10.3390/catal11111407pt_PT
dc.identifier.eissn2073-4344
dc.identifier.urihttp://hdl.handle.net/10400.1/17381
dc.language.isoengpt_PT
dc.peerreviewedyespt_PT
dc.publisherMDPIpt_PT
dc.relationCICECO-Aveiro Institute of Materials
dc.relationNot Available
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/pt_PT
dc.subjectMolybdenumpt_PT
dc.subjectMolybdenum oxidept_PT
dc.subjectOrganic-inorganic hybrid materialpt_PT
dc.subjectTetrazolept_PT
dc.subject5-(2-pyridyl) tetrazolept_PT
dc.subjectHydrogen bondspt_PT
dc.subjectEpoxidationpt_PT
dc.subjectBio-olefinspt_PT
dc.titleA 5-(2-Pyridyl) tetrazolate complex of Molybdenum(VI), its structure, and transformation to a Molybdenum Oxide-Based Hybrid Heterogeneous Catalyst for the Epoxidation of Olefinspt_PT
dc.title.alternativeUm complexo de tetrazolato 5-(2-Pyridyl) de Molbdenum(VI), sua estrutura e transformação para um catalisador heterogêneo híbrido baseado em óxido de Molbdenum para a Epóxidação de Olefinspt_PT
dc.typejournal article
dspace.entity.typePublication
oaire.awardTitleCICECO-Aveiro Institute of Materials
oaire.awardTitleNot Available
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/6817 - DCRRNI ID/UIDB%2F50011%2F2020/PT
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/CEEC IND 2017/CEECIND%2F00553%2F2017%2FCP1459%2FCT0034/PT
oaire.citation.issue11pt_PT
oaire.citation.startPage1407pt_PT
oaire.citation.titleCatalystspt_PT
oaire.citation.volume11pt_PT
oaire.fundingStream6817 - DCRRNI ID
oaire.fundingStreamCEEC IND 2017
person.familyNameD. Lopes
person.givenNameAndré
person.identifier2824636
person.identifier.ciencia-id351E-856A-0300
person.identifier.orcid0000-0002-9702-1216
person.identifier.ridE-2136-2012
person.identifier.scopus-author-id7201958625
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.rightsopenAccesspt_PT
rcaap.typearticlept_PT
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relation.isAuthorOfPublication.latestForDiscoveryf2f0fe56-e04d-4229-b37b-2b9f1789fe2d
relation.isProjectOfPublication1c0bff09-93c6-40de-aac2-1a56840e2bd7
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