Patent ID: 7964525
Filing Date: 2011-06-21
Classification: B01J,C10G

Abstract:
1. A bulk multi-metallic catalyst for use in the hydroconversion of hydrocarbon feedstock is formed by sulfiding a hydroxide catalyst precursor comprising: at least a Group VIB metal compound; at least a promoter metal compound selected from Group VIII, Group IIB, Group IIA, Group IVA and combinations thereof; optionally at least a ligating agent; optionally at least a diluent; wherein the hydroxide catalyst precursor has a residual geometric volume shrinkage of less than 12% upon sulfiding at a temperature of at least 100° C. for at least 30 minutes, and wherein the hydroxide catalyst precursor is formed in a process wherein the steps before sulfiding are carried out at a temperature of 200° C. or less for the catalyst precursor to remain a hydroxide before sulfiding.