Patent ID: 9616416
Date: 2017-04-11
CPC Classifications: B01J,C01B,C10G

Claim:
1. A process for preparing a hydroconversion catalyst based on modified zeolite Y, comprising in the following order the steps of: (A) preparing a modified zeolite Y of faujasite structure having an intracrystalline structure comprising at least one network of micropores, at least one network of small mesopores with a mean diameter of 2 to 5 nm and at least one network of large mesopores with a mean diameter of 10 to 50 nm, wherein the networks are interconnected; (B) mixing the modified zeolite Y with at least one first binder, shaping the resulting mixture by extrusion and then calcining, to obtain a shaped mixture; and (C) introducing at least one catalytic metal chosen from metals of group VIIIB or group VIB into the shaped mixture, followed by calcination, wherein the step (B) including the shaping by extrusion comprises: (i) making a paste by adding to a mixture of zeolite and at least one binder an aqueous suspension comprising at least one binder, and, optionally, at least one agent chosen from the families of flocculants, peptizers or plasticizers, (ii) extrusion of the paste obtained and chopping so as to obtain the extrudates of given shape and length, (iii) drying the extruded particles, (iv) calcination of the dried extruded particles.