New heterogeneous metal-oxides based catalyst for vegetable oil trans-esterification

• Autor(a) principal: Macedo,Caio C. S.
• Data de Publicação: 2006
• Outros Autores: Abreu,Frederique R., Tavares,André P., Alves,Melquizedeque B., Zara,Luiz F., Rubim,Joel C., Suarez,Paulo A. Z.
• Tipo de documento: Artigo
• Idioma: eng
• Título da fonte: Journal of the Brazilian Chemical Society (Online)
• Texto Completo: http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-50532006000700014
• topic: trans-esterification; biodiesel; vegetable oils; heterogeneous catalyst

The preparation of new materials obtained from the co-precipitation of aluminum, tin and zinc oxides and their use as catalytic system activities for vegetable oils alcoholysis are reported herein. It was observed that these metal-oxides of the type (Al2O3)X(SnO)Y(ZnO) Z are active for soybean oil alcoholysis, uzing several alcohols, including branched ones. Best result was achieved using methanol, with conversion yields up to 80% in 4 h. It was also possible to recycle the catalysts without apparent loss of activity.