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Molybdenum(VI) complexes with ligands derived from 5-(2-pyridyl)-2H-tetrazole as catalysts for the epoxidation of olefins

2023Journal article Open Access
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dc.contributor.authorNunes, Martinique S.
dc.contributor.authorGomes, Ana C.
dc.contributor.authorNeves, Patrícia
dc.contributor.authorMendes, Ricardo F.
dc.contributor.authorAlmeida Paz, Filipe A.
dc.contributor.authorLopes, André
dc.contributor.authorPillinger, Martyn
dc.contributor.authorGonçalves, Isabel S.
dc.contributor.authorValente, Anabela A.
dc.date.accessioned2023-09-26T14:15:13Z
dc.date.available2023-09-26T14:15:13Z
dc.date.issued2023
dc.description.abstractThe development of effective catalytic epoxidation processes that are an alternative to stoichiometric non-selective oxidation routes is important to meet environmental sustainability goals. In this work, molybdenum (VI) compounds bearing 5-(2-pyridyl)-2H-tetrazole derivatives as organic components, namely the ionic and neutral mononuclear complexes (H2ptz)[MoO2Cl2(ptz)] (1) and [MoO2Cl2(tBu-ptz)] (2), and the new Lindqvist-type polyoxometalate (POM) [tBu-Hptz]2[Mo6O19] (3), where Hptz = 5-(2-pyridyl)tetrazole and tBu-ptz = 2-tert- butyl-5-(2-pyridyl)- 2H-tetrazole, were studied as epoxidation catalysts using readily available and relatively ecofriendly hydroperoxide oxidants, namely hydrogen peroxide and tert-butyl hydroperoxide (TBHP). The pre-pared catalysts were very active. For example, 100% cis-cyclooctene conversion and 100% epoxide selectivity were reached at 1 h for 1 and 3, and 10 min for 2 (with TBHP). Catalytic and characterization studies indicated that the mononuclear complexes suffered chemical transformations under the reaction conditions, whereas 3 was structurally stable. This POM acted as a homogeneous catalyst and could be recycled by employing an ionic liquid solvent. The POM can be synthesized from 2 under different conditions, including those used in the catalytic process. Moreover, 3 was an effective epoxidation catalyst for a biobased substrate scope that included fatty acid methyl esters and the terpene dl-limonene.pt_PT
dc.description.sponsorshipPOCI-01-0145-FEDER-030075; LA/P/0006/2020; EMBRC.PT ALG-01–0145-FEDER-022121; (grant ref. 2021.06403.BDpt_PT
dc.description.versioninfo:eu-repo/semantics/publishedVersionpt_PT
dc.identifier.doi10.1016/j.cattod.2023.114273pt_PT
dc.identifier.issn0920-5861
dc.identifier.urihttp://hdl.handle.net/10400.1/20018
dc.language.isoengpt_PT
dc.peerreviewedyespt_PT
dc.publisherElsevierpt_PT
dc.relationCICECO-Aveiro Institute of Materials
dc.relationCICECO-Aveiro Institute of Materials
dc.relationNot Available
dc.relationNot Available
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/4.0/pt_PT
dc.subjectMolybdenumpt_PT
dc.subjectPyridyl-tetrazole ligandspt_PT
dc.subjectLindqvist anionpt_PT
dc.subjectEpoxidationpt_PT
dc.subjectBio-olefinspt_PT
dc.subjectIonic liquidspt_PT
dc.titleMolybdenum(VI) complexes with ligands derived from 5-(2-pyridyl)-2H-tetrazole as catalysts for the epoxidation of olefinspt_PT
dc.typejournal article
dspace.entity.typePublication
oaire.awardTitleCICECO-Aveiro Institute of Materials
oaire.awardTitleCICECO-Aveiro Institute of Materials
oaire.awardTitleNot Available
oaire.awardTitleNot Available
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/6817 - DCRRNI ID/UIDB%2F50011%2F2020/PT
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/6817 - DCRRNI ID/UIDP%2F50011%2F2020/PT
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/CEEC IND 2017/CEECIND%2F02128%2F2017%2FCP1459%2FCT0039/PT
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/CEEC IND 2017/CEECIND%2F00553%2F2017%2FCP1459%2FCT0034/PT
oaire.citation.startPage114273pt_PT
oaire.citation.titleCatalysis Todaypt_PT
oaire.citation.volume423pt_PT
oaire.fundingStream6817 - DCRRNI ID
oaire.fundingStream6817 - DCRRNI ID
oaire.fundingStreamCEEC IND 2017
oaire.fundingStreamCEEC IND 2017
person.familyNameCasimiro Carvalho Lopes
person.givenNameAndré
person.identifier.ciencia-idC11D-55C2-44C5
project.funder.identifierhttp://doi.org/10.13039/501100001871
project.funder.identifierhttp://doi.org/10.13039/501100001871
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
project.funder.nameFundação para a Ciência e a Tecnologia
project.funder.nameFundação para a Ciência e a Tecnologia
rcaap.rightsopenAccesspt_PT
rcaap.typearticlept_PT
relation.isAuthorOfPublicationc007fa48-01e3-4085-92b7-50cf92120ba4
relation.isAuthorOfPublication.latestForDiscoveryc007fa48-01e3-4085-92b7-50cf92120ba4
relation.isProjectOfPublication1c0bff09-93c6-40de-aac2-1a56840e2bd7
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