process of producing alkyl esters from the reaction of fatty acids and / or vegetable oils and / or animal fats and / or waste oil fats. glycerin production as a co-product of transesterification of vegetable oils and / or animal fats and / or shortened alcohols and residual oils using catalyst

摘要

process of producing alkyl esters from the reaction of fatty acids and / or vegetable oils and / or animal fats and / or residual fats and oils. Glycerin production as a co-product of transesterification of vegetable oils and / or animal fats and / or residual fats and oils with short chain alcohols using a catalyst, the present invention reports the use of m2 (s04) 2 compounds, where m represents a series of transition metals, as catalysts in high activity heterogeneous processes, useful in obtaining alkyl esters from fatty acid esterification and / or transesterification of vegetable oils, referentially used in biofuels production and, more preferably also from biodiesel. Catalysts are obtained from simple and inexpensive experimental procedures and high purity alkyl esters in reactions with conversions greater than 90%. This invention also encompasses the recovery and reuse of catalysts after proper treatment as they are insoluble and stable compounds after their use in esterification and / or transesterification catalysis. furthermore, the product treatment steps are simplified, the alkyl esters being obtained with high purity even without any common treatment step in homogeneous route processes.