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US 11,850,576 B2Granted
Acidic aromatization catalysts with improved activity and selectivity
AssigneeChevron Phillips Chemical Company LP
InventorGabriela D. Alvez-Manoli
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Abstract
Methods for producing supported catalysts containing a transition metal and a bound zeolite base are disclosed. These methods employ a step of impregnating the bound zeolite base with the transition metal, fluorine, and high loadings of chlorine. The resultant high chlorine content supported catalysts have improved catalyst activity in aromatization reactions.
Claims20
A supported catalyst comprising:
- a bound zeolite base, wherein the bound zeolite base comprises a binder and a large pore zeolite having an average pore diameter in a range of from about 7 Å to about 12 Å;
- from about 0.7 wt. % to about 1.5 wt. % of platinum, based on the total weight of the supported catalyst;
- from about 2 wt. % to about 3.3 wt. % of chlorine, based on the total weight of the supported catalyst;
- and
- from about 0.5 wt. % to about 1.3 wt. % of fluorine, based on the total weight of the supported catalyst;
- wherein the supported catalyst is characterized by a peak reduction temperature on a Temperature Programmed Reduction curve in a range from about 600° F. to about 720° F.
3 more elements
A supported catalyst comprising:
- a bound zeolite base comprising a silica-bound K/L-zeolite;
- from about 0.7 wt. % to about 1.5 wt. % of platinum, based on the total weight of the supported catalyst;
- from about 2 wt. % to about 3.3 wt. % of chlorine, based on the total weight of the supported catalyst;
- and
- from about 0.5 wt. % to about 1.1 wt. % of fluorine, based on the total weight of the supported catalyst;
- wherein the supported catalyst is characterized by a peak reduction temperature on a Temperature Programmed Reduction curve in a range from about 600° F. to about 730° F.
3 more elements
A reforming process comprising:
- (i) contacting a supported catalyst with a reducing gas stream to produce an activated aromatization catalyst, wherein the supported catalyst comprises:
- a bound zeolite base, wherein the bound zeolite base comprises a binder and a large pore zeolite having an average pore diameter in a range of from about 7 Å to about 12 Å;
- from about 0.7 wt. % to about 1.5 wt. % of platinum, based on the total weight of the supported catalyst;
- from about 2 wt. % to about 3.3 wt. % of chlorine, based on the total weight of the supported catalyst;
- and
- from about 0.5 wt. % to about 1.3 wt. % of fluorine, based on the total weight of the supported catalyst;
- wherein the supported catalyst is characterized by a peak reduction temperature on a Temperature Programmed Reduction curve in a range from about 600° F. to about 720° F.;
- and
- (ii) contacting a hydrocarbon feed with the activated aromatization catalyst under reforming conditions in a reactor system to produce an aromatic product.
6 more elements
Dependencies are inferred from the claim text.