Transesterification of Rape Oil Using ZnO Modified with Alkali Earth Metal as a Solid Basic Catalyst

J.M. Encinar, J.F. González, G. Martínez & N. Sánchez
The aim of this work was to optimize the zinc oxide use as a catalyst for the transesterification of rape oil to obtain biodiesel, according to UNE norms. The alkaline and alkaline earth metals­doped ZnO catalysts were prepared by an impregnation method with aqueous solution of metal nitrate. It was done a study of the most influential variables in the catalyst preparation, as type of metals (Li, Na, K, Mg, Ca, Sr, Ba), dose of...