Use of HZSM-5 modified with citric acid as acid heterogeneous catalyst for biodiesel production via esterification of oleic acid

Registro completo de metadados
MetadadosDescriçãoIdioma
Autor(es): dc.creatorVieira, Sara S.-
Autor(es): dc.creatorMagriotis, Zuy M.-
Autor(es): dc.creatorRibeiro, Maria Filipa-
Autor(es): dc.creatorFernandes, Inês Graça Auguste-
Autor(es): dc.creatorLopes, José Manuel F. M.-
Autor(es): dc.creatorCoelho, Sabrina M.-
Autor(es): dc.creatorSantos, Nadiene Ap. V.-
Autor(es): dc.creatorSaczk, Adelir Ap.-
Data de aceite: dc.date.accessioned2026-02-09T12:41:55Z-
Data de disponibilização: dc.date.available2026-02-09T12:41:55Z-
Data de envio: dc.date.issued2019-10-10-
Data de envio: dc.date.issued2019-10-10-
Data de envio: dc.date.issued2015-01-01-
Fonte completa do material: dc.identifierhttps://repositorio.ufla.br/handle/1/37161-
Fonte completa do material: dc.identifierhttps://www.sciencedirect.com/science/article/pii/S1387181114005186-
Fonte: dc.identifier.urihttp://educapes.capes.gov.br/handle/capes/1166509-
Descrição: dc.descriptionIn this study, the efficiency of citric acid as dealumination agent was evaluated in the case of zeolite HZSM-5 by varying the experimental conditions, namely concentration (0.5, 1.0 and 2.0 mol L−1) and treatment temperature (60 and 80 °C). The effect of the CA treatment on structural, textural and acidity properties of the starting HZSM-5 material was monitored using XRD, N2 sorption and FTIR (pyridine and collidine) measurements. Heptane and methylcyclohexane cracking model reactions were used to evaluate the catalytic behavior of the modified materials, in terms of acid strength and active sites accessibility. The modified catalysts were tested in the esterification reaction, using oleic acid as reagent and different oleic acid/methanol molar ratios. All the results show the beneficial effect of the citric acid treatment on the physicochemical properties of the final materials, with an improvement of the external acidity, a crucial parameter for the reaction considered, i.e. the oleic acid esterification.-
Idioma: dc.languageen-
Publicador: dc.publisherElsevier-
Direitos: dc.rightsrestrictAccess-
???dc.source???: dc.sourceMicroporous and Mesoporous Materials-
Palavras-chave: dc.subjectBiodiesel-
Palavras-chave: dc.subjectEsterification-
Palavras-chave: dc.subjectHZSM-5-
Palavras-chave: dc.subjectDealumination-
Palavras-chave: dc.subjectCitric acid-
Palavras-chave: dc.subjectZeolite-
Título: dc.titleUse of HZSM-5 modified with citric acid as acid heterogeneous catalyst for biodiesel production via esterification of oleic acid-
Tipo de arquivo: dc.typeArtigo-
Aparece nas coleções:Repositório Institucional da Universidade Federal de Lavras (RIUFLA)

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