INCAPE   05401
INSTITUTO DE INVESTIGACIONES EN CATALISIS Y PETROQUIMICA "ING. JOSE MIGUEL PARERA"
Unidad Ejecutora - UE
congresos y reuniones científicas
Título:
Sunflower oil ethanolysis with sodium ethoxide catalyst for biodiesel production.
Autor/es:
BÁRBARA SÁNCHEZ; CARLOS QUERINI; GUSTAVO MENDOW
Lugar:
Bruselas
Reunión:
Congreso; Tenth International Congress on Catalysis and Automotive Pollution Control; 2015
Institución organizadora:
Université libre de Bruxelles, B
Resumen:
Using bioethanol for biodiesel synthesis it is possible to obtain a 100% renewable product [1]. Although at present ethanol is more expensive than methanol, it presents many advantages [1-3]. Among the basic homogeneous catalysts used for biodiesel production, the one with best performance so far is sodium methoxide. Therefore, if the objective is obtaining biodiesel entirely composed by ethyl esters, the methoxide catalyst must be replaced. In this work, the transesterification reaction was performed using ethanol as alcohol and sodium ethoxide as catalyst. It was concluded that the methanolysis reactions are faster than the ethanolysis and sodium methoxide catalyst is more active than the corresponding ethoxide. This is due to two factors: first, the steric hindrance and secondly, that the saponification of EtONa in ethanol medium is greater than when using methanol, causing a decrease in the catalyst concentration and leading to lower conversion.