Hydrodeoxygenation process of oils or fats with limited conversion to decarboxylation using a heterogeneous catalyst

摘要

Hydrodeoxygenation process of oils and fats of vegetable or animal origin, or mixtures of such fillers, containing triglycerides and / or fatty acids, or of algae or fish oils, with conversion by decarboxylation / decarbonylation limited to at most 10% , which uses a mass or supported catalyst comprising an active phase consisting of at least one element of group VIB selected from molybdenum and tungsten and by at least one element of group VIII selected between nickel and cobalt, said elements being in sulphide form and the atomic ratio of the metal (or metals) of group VIII with respect to the metal (or metals) of group VIB being strictly greater than 0 and less than 0.095, said procedure being performed at a temperature between 120 and 450 ° C , at a pressure between 1 MPa and 10 MPa, at an hourly space velocity between 0.1 h-1 and 10 h-1 and in the presence of a total amount of hydrogen mixed with the load such that the hydrogen / charge ratio is between 50 and 3,000 Nm3 of hydrogen / m3 of charge.