Process for the manufacture of fatty acid esters from ricin oil and mono-alcohols uses a heterogeneous catalyst based on zinc and aluminum with a spinel structure in a transesterification reaction and separation

摘要

The use of the zinc/aluminum oxide catalyst enables the production of pure esters and glycerin by a process which involves few stages and results in products of high purity. Process for the manufacture of a fatty acid ester and glycerin to a high state of purity by the reaction of a ricin oil with a 1 - 18C aliphatic mono-alcohol .The reaction is effected in the presence of a catalyst chosen from zinc oxide, a mixture of zinc oxide and alumina or a zinc aluminate consistent with the formula : ZnAl2O4, xZnO, yAl2O3 (x, y = 0 - 2). Independent claims are also included for the ester compositions obtained and the glycerin.