METHOD FOR IMPROVING A FLOW POINT OF BITUMINOUS FILLERS OBTAINABLE BY A FISHER-TROPSCH METHOD USING A ZEOLITE MIXTURE-BASED CATALYST

摘要

The invention relates to a method for improving a flow point of bituminous fillers obtainable by a Fisher-Tropsch method, in particular for efficiently converting fillers having high flow points into at least one section having a lower flowing point and a high viscosity factor for oil bases. The inventive method consists in using a catalyst comprising at least one type of zeolite (molecular sieve) selected from a group formed by TON-type structural zeolites (Theta-1, ZSM-22, ISI-10, NU-10 and KZ-2) and at least one type of ZBM-30 zeolite, at least one mineral porous matrix, at least one hydro-dehydrogenating element, preferably selected from group VIB and VIII elements of the periodical classification.