Pretreatment method for increasing conversion of reforming catalyst
AssigneeChevron Research Company
InventorLeslie A. Field
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Abstract
A pretreatment process is disclosed for increasing conversion of reforming catalysts wherein the catalyst is treated at from 120.degree. C. to 260.degree. C.; then the temperature of the treated catalyst is maintained at a temperature of from 370.degree. C. to 600.degree. C. in a reducing atmosphere prior to starting the hydrocarbon feed. Preferably, the catalyst is treated in the presence of hydrogen at atmospheric pressure for at least twenty minutes; then the temperature of the treated catalyst is maintained at 475.degree. C. in a reducing atmosphere for at least ten minutes prior to starting the hydrocarbon feed.
Claims16
A method of pretreating a catalyst comprising:
- (a) treating said catalyst at from 120.degree. C. to 260.degree. C.;
- and
- (b) maintaining the temperature of the treated catalyst at from 370.degree. C. to 600.degree. C. in a reducing atmosphere.
A method of pretreating a catalyst comprising:
- (a) reducing said catalyst in the presence of hydrogen at a temperature of 200.degree. C. for at least twenty minutes;
- and
- (b) maintaining the temperature of the reduced catalyst at about 475.degree. C. for at least ten minutes;
- wherein said catalyst comprises:
- (1) a type L zeolite containing from 8% to 10% by weight barium and from 0.1% to 1.5% by weight platinum;
- and
- (2) an inorganic binder selected from the group consisting of silica, alumina, aluminosilicates, and clays.
Dependencies are inferred from the claim text.