improved process for the preparation of alkyl fatty acid (biodiesel) esters from triglyceride oils using environmentally friendly solid base catalysts

摘要

patent summary: "improved process for the preparation of alkyl fatty acid (biodiesel) esters from triglyceride oils using ecologically correct solid base catalysts". The present invention relates to an improved process for preparing green fatty acid methyl esters (fam; commonly called biodiesel) from different triglyceride oils using mixed metal oxides derived from double lamellar hydroxides (referred to herein as ldhs) as reusable solid heterogeneous basic catalysts. This process uses a low molar ratio of alcohol: oil and catalyst and / or the products are easily separable after reaction by simple physical processes. The biodiesel properties thus obtained reach the standard values for biodiesel and can be used directly as a transport fuel.