Patent ID: 6514896
Filing Date: 2003-02-04
Classification: B01J,C10G

Abstract:
A composition prepared by a process consisting essentially of:(a) treating a zeolite with an acid to form an acid-treated zeolite, (b) ion-exchanging said acid-treated zeolite with zinc and at least one other metal selected from the group consisting of Group 6B elements of the periodic table of elements to form an acid-treated, ion-exchanged zeolite, and (c) steam treating said acid-treated, ion-exchanged zeolite to form an acid-treated, ion exchanged, steam-treated zeolite, wherein the amount of said zinc and said tar least one other metal ion-exchanged with said acid-treared zeolite is to provide an atomic ratio of said at least one other metal to said zinc in said catalyst in the range of from about 0.1:1 to about 10:1.