Use of ionic liquids to implement a procedure for the preparation of biodiesel

摘要

Use of a combination of - at least one ionic liquid that is lipophilic, and immiscible with water, and - at least one enzyme, in which the lipophilic ionic liquid is constituted by a lipophilic cation and a hydrophobic anion, said cation being constituted by a cationic head and said anion being constituted by an anionic head and in which said cationic head and / or anionic head are replaced by one or more secondary carbon chains that can be similar or different from each other, and in which the chain Secondary carbon in the cationic head and / or the anionic head are straight or branched carbon chains, saturated or unsaturated, assuming that at least one of the secondary chains comprises at least 10 carbon atoms, in which the enzyme is a lipase or an esterase, for the implementation of an esterification and / or transesterification process of a substrate with at least one alcohol, said substrate consisting of oils, fats, fatty acids or a mixture thereof, in which said ionic liquid, said substrate and said alcohol form a single homogeneous liquid phase at the temperature at which the esterification and / or transesterification process is carried out.