Production of biodiesel using HZSM-5 zeolites modified with citric acid and SO42−/La2O3

Registro completo de metadados
MetadadosDescriçãoIdioma
Autor(es): dc.creatorVieira, Sara S.-
Autor(es): dc.creatorMagriotis, Zuy Maria-
Autor(es): dc.creatorGraça, Inês-
Autor(es): dc.creatorFernandes, Auguste-
Autor(es): dc.creatorRibeiro, Maria Filipa-
Autor(es): dc.creatorLopes, José Manuel F. M.-
Autor(es): dc.creatorCoelho, Sabrina M.-
Autor(es): dc.creatorSantos, Nadiene Aparecida do Vale-
Autor(es): dc.creatorSaczk, Adelir Aparecida-
Data de aceite: dc.date.accessioned2026-02-09T11:37:01Z-
Data de disponibilização: dc.date.available2026-02-09T11:37:01Z-
Data de envio: dc.date.issued2018-05-18-
Data de envio: dc.date.issued2018-05-18-
Data de envio: dc.date.issued2017-
Fonte completa do material: dc.identifierhttps://repositorio.ufla.br/handle/1/29273-
Fonte completa do material: dc.identifierhttps://www.sciencedirect.com/science/article/pii/S0920586116302772-
Fonte: dc.identifier.urihttp://educapes.capes.gov.br/handle/capes/1143606-
Descrição: dc.descriptionThe present study aims at evaluating the efficiency of the HZSM-5 zeolite dealuminated with citric acid and modified with sulfated lanthanum oxide (SO42−/La2O3) as catalysts for the production of biodiesel via esterification. The effects of the treatments in the structural, textural and acid properties of produced catalysts were monitored by PXRD, adsorption/desorption of N2 and measurements of acidity by FTIR using pyridine and collidine as probe molecules. The catalysts were tested in the reaction of esterification using oleic acid and methanol as reactants. Different molar ratios (1:10, 1:20 and 1:45) and amounts of catalyst (2%, 5% and 10%) were tested and the conversion of oleic acid into methyl oleate analysed. Results show that the dealumination with citric acid and impregnation of SO42−/La2O3 over HZSM-5 produced catalysts more active for the conversion of oleic acid for the production of biodiesel, when compared to the parent HZSM-5 zeolite. The increase of external surface properties (acidity and area) was the main parameter influencing the activity of the catalysts for the considered reaction.-
Idioma: dc.languageen-
Publicador: dc.publisherElsevier-
Direitos: dc.rightsrestrictAccess-
???dc.source???: dc.sourceCatalysis Today-
Palavras-chave: dc.subjectBiodiesel-
Palavras-chave: dc.subjectEsterification-
Palavras-chave: dc.subjectZeolites-
Palavras-chave: dc.subjectAcid properties-
Título: dc.titleProduction of biodiesel using HZSM-5 zeolites modified with citric acid and SO42−/La2O3-
Tipo de arquivo: dc.typeArtigo-
Aparece nas coleções:Repositório Institucional da Universidade Federal de Lavras (RIUFLA)

Não existem arquivos associados a este item.