Biodiesel is a promising alternative diesel fuel produced by a catalytic transesterification of vegetable oils, has become more attractive now a day, because of its environmental concerns and the fact that it is made from renewable resources. In this work, the trans-esterification of soybean oil with methanol has been studied in a heterogeneous system, using Zn, Mn, K and Ce supported at mixture of porcelain, cinder and ceramic. After loading 0.5 and 1mm of Zn, Mn, K and Ce  at 7 gram of support followed by calcinations at 600oC for  4h. Fresh and used catalyst were characterization by means of various spectroscopic techniques such as scanning electron microscopy (SEM) and TG conversion were checked by HPLC. It has been observed that 1M ZnCO3 loaded at support gives 93% TG conversion.