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Aluminum containing dendrimeric silica nanoparticles as promising metallocene catalyst supports for ethylene polymerization

2018Journal article Open access
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dc.contributor.authorCecílio, Duarte M.
dc.contributor.authorFernandes, Auguste
dc.contributor.authorLourenço, João P.
dc.contributor.authorRibeiro, M. Rosário
dc.date.accessioned2019-11-11T17:28:33Z
dc.date.available2019-11-11T17:28:33Z
dc.date.issued2018
dc.description.abstractSeveral aluminum containing dendrimeric silica nanospheres, DSAl materials, were prepared using different synthesis and post-synthetic procedures. These materials were used for the immobilization of Cp2ZrCl2 via direct impregnation. The support materials were rigorously characterized by TEM, N2 adsorption, FTIR (using pyridine as probe molecule) and SS-NMR to assess their morphological, textural and surface acidic properties. Supported catalysts were tested in ethylene homopolymerization using methylaluminoxane (MAO) as co-catalyst and scavenger. The relationships between the types and strength of acid sites, as well as the textural and morphological parameters of DSAl materials with the behavior of catalytic systems are explored in this work. The results analyzed in this paper confirm the importance that support surface acidity plays in the formation of the active species for ethylene polymerization and in its activity without neglecting the contribution of support textural properties as well.pt_PT
dc.description.sponsorshipGrant Number: TC 04/17; FCT-CATSUS program
dc.description.versioninfo:eu-repo/semantics/publishedVersionpt_PT
dc.identifier.citationD. M. Cecílio, A. Fernandes, J. P. Lourenço, M. R. Ribeiro, ChemCatChem 2018, 10, 3761.pt_PT
dc.identifier.doihttps://doi.org/10.1002/cctc.201800534
dc.identifier.issn1867-3880
dc.identifier.urihttp://hdl.handle.net/10400.1/12874
dc.language.isoengpt_PT
dc.peerreviewedyespt_PT
dc.publisherWiley-VCH Verlagpt_PT
dc.relationNovel approaches to polyyolefin catalyts and high-performance commodity polyolefins
dc.relation.publisherversionhttps://onlinelibrary.wiley.com/doi/full/10.1002/cctc.201800534pt_PT
dc.subjectAciditypt_PT
dc.subjectDendrimeric silicapt_PT
dc.subjectEthylene polymerizationpt_PT
dc.subjectMetallocenespt_PT
dc.subjectSupported catalystspt_PT
dc.titleAluminum containing dendrimeric silica nanoparticles as promising metallocene catalyst supports for ethylene polymerizationpt_PT
dc.typejournal article
dspace.entity.typePublication
oaire.awardTitleNovel approaches to polyyolefin catalyts and high-performance commodity polyolefins
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/5876/UID%2FQUI%2F00100%2F2013/PT
oaire.awardURIinfo:eu-repo/grantAgreement/FCT//PD%2FBD%2F114580%2F2016/PT
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/SFRH/SFRH%2FBPD%2F91397%2F2012/PT
oaire.citation.endPage3769pt_PT
oaire.citation.issue17pt_PT
oaire.citation.startPage3761pt_PT
oaire.citation.titleChemCatChempt_PT
oaire.citation.volume10pt_PT
oaire.fundingStream5876
oaire.fundingStreamSFRH
person.familyNameLourenço
person.givenNameJoão P.
person.identifier634248
person.identifier.ciencia-idF81F-A1F0-2A7C
person.identifier.orcid0000-0002-0501-6672
person.identifier.ridA-7758-2008
person.identifier.scopus-author-id57195730600
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
rcaap.rightsopenAccesspt_PT
rcaap.typearticlept_PT
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relation.isAuthorOfPublication.latestForDiscoveryf66ab886-d989-4c1d-9550-527507723c26
relation.isProjectOfPublication9afed05e-58cb-478e-acc7-625439f9c745
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