heterogeneous catalyst spinel type zinc aluminate over-stoichiometric zinc and their use in a process for preparing alcohol esters from triglycerides and alcohol.

摘要

heterogeneous catalyst spinel type zinc aluminate over-stoichiometric zinc and their use in a process for preparing alcohol esters from triglycerides and alcohol.; Catalyst based on a mixed oxide of zinc and aluminum spinel structure on stoichiometric zinc in which a fraction of Zn atoms is in octahedral position, their preparation process and their use in a method of preparing a composition of alcohol esters monocarboxylic acids linear from 6 to 26 carbon atoms from a vegetable or animal oil, neutral or acid, virgin or recycled, with monoalcohols of 1 to 18 carbon atoms which can obtain directly in one or more steps, an ester which can be used as fuel and pure glycerin.