Porosity of CHA zeolite driving the formation of polyaromatic coke species in the methanol to olefins reaction

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dc.contributor.authorFlorindo, Bianca R. [UNESP]
dc.contributor.authorCatuzo, Gabriel L. [UNESP]
dc.contributor.authorMartins, Leandro [UNESP]
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.date.accessioned2021-06-25T10:30:25Z
dc.date.available2021-06-25T10:30:25Z
dc.date.issued2021-01-01
dc.description.abstractThe pore size of the chabazite structure is exceptionally suitable for the methanol to olefins (MTO) reaction. The reaction has an induction period required for the formation of a hydrocarbon pool (HP), usually composed of aromatic compounds of different sizes. HP is alkylated by methanol and afterward cracked, leading to the formation of olefins. Despite the importance of HP, its formation and growth in size are exceedingly dependent on the porosity of the catalyst. The ideal is that the formed HP remains stable throughout the reaction because the growth in its size causes blockage of the small catalyst pores, decreasing its capacity. Herein we studied chabazite zeolites with different porosity and structure, caused by variation in the particle size and pores' volume. Porosity influenced the formation of HP species in quantity (as revealed by thermogravimetric analysis (TGA)) and polymerization degree (gas chromatography coupled with mass spectrometer (GC-MS) analysis) and, consequently, the MTO reaction's performance.en
dc.description.affiliationInstituto de Quimica Universidade Estadual Paulista (Unesp), Prof. Francisco Degni, 55
dc.description.affiliationUnespInstituto de Quimica Universidade Estadual Paulista (Unesp), Prof. Francisco Degni, 55
dc.description.sponsorshipFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
dc.description.sponsorshipIdFAPESP: 2018/01258-5
dc.description.sponsorshipIdFAPESP: 2019/09078-9
dc.format.extent1051-1059
dc.identifierhttp://dx.doi.org/10.21577/0103-5053.20210008
dc.identifier.citationJournal of the Brazilian Chemical Society, v. 32, n. 5, p. 1051-1059, 2021.
dc.identifier.doi10.21577/0103-5053.20210008
dc.identifier.fileS0103-50532021000501051.pdf
dc.identifier.issn1678-4790
dc.identifier.issn0103-5053
dc.identifier.scieloS0103-50532021000501051
dc.identifier.scopus2-s2.0-85105799644
dc.identifier.urihttp://hdl.handle.net/11449/206337
dc.language.isoeng
dc.relation.ispartofJournal of the Brazilian Chemical Society
dc.rights.accessRightsAcesso aberto
dc.sourceScopus
dc.subjectCHA zeolite
dc.subjectIdentification of coke
dc.subjectMTO reaction
dc.subjectPorosity of catalyst
dc.titlePorosity of CHA zeolite driving the formation of polyaromatic coke species in the methanol to olefins reactionen
dc.typeArtigo

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