CATALYST COMPRISING A PARTIALLY AMORPHOUS ZEOLITE Y, AN ELEMENT OF GROUP V B AND ITS USE FOR HYDROCONVERTING AND HYDROREFINING HYDROCARBON OIL FEEDSTOCKS

摘要

The invention concerns a catalyst containing at least a partially amorphous zeolite Y, at least a metal of group VB, preferably niobium, at least an amorphous or poorly crystallised matrix, optionally an element selected from group VIB and group VIII, optionally at least an element selected from the group consisting of P, B, Si, optionally at least an element of group VIIA. The invention also concerns the use of said catalyst for hydrocracking and hydrorefining hydrocarbon feedstsocks.