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dc.contributor.CRUESPUNIVERSIDADE ESTADUAL DE CAMPINASpt_BR
dc.contributor.authorunicampRamos, Francisca Solânea de Oliveira-
dc.typeArtigopt_BR
dc.titleTuning of acidic and catalytic properties of IWR zeolite by post-synthesis incorporation of three-valent elementspt_BR
dc.contributor.authorShamzhya, Mariya-
dc.contributor.authorRamos, Francisca Solânea de O.-
dc.subjectZeolitospt_BR
dc.subject.otherlanguageZeolitespt_BR
dc.description.abstractPost-synthesis alumination and galliation of borogermanosilicate IWR zeolite in acidic medium (pH 0.5–2.0) was shown to be an efficient approach for tuning its acidic and catalytic properties. The concentration of Al(NO3)3, pH, and the temperature of the treatment of IWR zeolite were varied and related to the structural and acidic properties of the obtained materials. The concentration of Al incorporated in the framework of IWR increased with increasing concentration of applied Al(NO3)3 solution (in the range 0.1–1.0 M), pH (0.5–2.0), or the temperature (25–95 °C) of the treatment. Obtained Ga- and Al-containing IWR zeolites are characterized by a higher concentration of strong Brønsted acid sites (117 and 82–277 μmol/g vs. 24 μmol/g) and superior catalytic performance in benzoylation of p-xylene in comparison with parent B-IWR zeolite. The balanced strength of acid centers in Ga-IWR enabling sufficient activation of benzoyl chloride as well as efficient desorption of formed ketone results in the highest yield of target product over Ga-IWR among isomorphously substituted IWR zeolites: B-IWR (5%) < Al-IWR (33%) < Ga-IWR (99%).pt_BR
dc.relation.ispartofCatalysis todaypt_BR
dc.relation.ispartofabbreviationCatal. todaypt_BR
dc.publisher.cityAmsterdampt_BR
dc.publisher.countryPaíses Baixospt_BR
dc.publisherElsevierpt_BR
dc.date.issued2015-
dc.language.isoengpt_BR
dc.description.volume243pt_BR
dc.description.firstpage76pt_BR
dc.description.lastpage84pt_BR
dc.rightsFechadopt_BR
dc.sourceWOSpt_BR
dc.identifier.issn0920-5861pt_BR
dc.identifier.eissn1873-4308pt_BR
dc.identifier.doi10.1016/j.cattod.2014.06.0441pt_BR
dc.identifier.urlhttp://www.sciencedirect.com/science/article/pii/S0920586114004829pt_BR
dc.date.available2021-01-08T14:57:54Z-
dc.date.accessioned2021-01-08T14:57:54Z-
dc.description.provenanceSubmitted by Bruna Maria Campos da Cunha (bcampos@unicamp.br) on 2021-01-08T14:57:54Z No. of bitstreams: 0. Added 1 bitstream(s) on 2021-02-19T18:02:29Z : No. of bitstreams: 1 000347049900011.pdf: 3276035 bytes, checksum: 85e6d7391869e501185d98b2e1fa7556 (MD5)en
dc.description.provenanceMade available in DSpace on 2021-01-08T14:57:54Z (GMT). No. of bitstreams: 0 Previous issue date: 2015en
dc.identifier.urihttp://repositorio.unicamp.br/jspui/handle/REPOSIP/353791-
dc.contributor.departmentSem informaçãopt_BR
dc.contributor.unidadeInstituto de Químicapt_BR
dc.subject.keywordGermanosilicate zeolitespt_BR
dc.subject.keywordIWRApt_BR
dc.subject.keywordluminationpt_BR
dc.subject.keywordPost-synthesis treatmentpt_BR
dc.subject.keywordHydrothermal stabilitypt_BR
dc.identifier.source000347049900011pt_BR
dc.creator.orcidSem informaçãopt_BR
dc.type.formArtigopt_BR
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