US 5,707,918 AGranted

Hydrocarbon isomerization catalyst blend

AssigneePhillips Petroleum Company

InventorsAn-hsiang Wu, Charles A. Drake, Ralph J. Melton

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Abstract

A Group VIII metal- and chloride-containing composition is prepared by a method which comprises mixing (A) a solid material containing at least one Group VIII metal (Pt and/or Pd and/or Ni) and alumina as the support and (B) an alumina-supported aluminum- and chlorine-containing compound which has been prepared by mixing an alumina material with AlCl.sub.3 and/or at least one organoaluminum chloride (such as ethylaluminum dichloride), heating the mixture at a temperature of about 600.degree.-750.degree. C. and then with an HCl-containing gas at a temperature of about 100.degree.-750.degree. C. The thus-obtained composition comprising components (A) and (B) is employed as a catalyst in the isomerization of C.sub.4 -C.sub.8 alkanes and/or cycloalkanes (e.g., n-butane).

Claims28

Dependent claims

A method of preparing a solid Group VIII metal- and chlorine-containing composition which comprises blending:

(A) a first solid material comprising (i) at least one Group VIII metal selected from the group consisting of platinum, palladium and nickel and (ii) alumina as the support, wherein halogens are substantially absent from said first solid material;
and
(B) a second solid material comprising at least one aluminum- and chlorine-containing compound and alumina as the support, wherein Group VIII metals are substantially absent from said second solid material and wherein said second solid material has been prepared by a method comprising
(a) mixing a first alumina material with at least one aluminum- and chlorine-containing compound selected from the group consisting of aluminum chloride and organoaluminum chlorides;
(c) heating the material obtained in step (a) in a substantially inert gas atmosphere at a temperature of about 600.degree.-750.degree. C. for a time period of at least about 10 minutes;
and
(c) treating the material obtained in step (b) with a hydrogen chloride-containing gas at a temperature of about 100.degree.-750.degree. C. for a time period of at least about 10 minutes.

4 more elements

Dependencies are inferred from the claim text.