The reaction time is known to be the one of the most important
variables affecting the biodiesel yield. As shown inFig. 1, in the
magnetically stirred system, CaO(OE) could be effectively used to
catalyze the transesterification reaction and the catalytic activity
was comparable with that of CaO(Lab). The similar catalytic activity for the two catalysts may be ascribed to the similar chemical
compositions, surface area, pore volume and basicity, as demon