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US 11,141,718 B2Granted
Aromatization catalyst preparation with alkali metal present during a washing step
AssigneeChevron Phillips Chemical Company LP
InventorsRyan W. Snell, Xianghong Hao
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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 washing the bound zeolite base in the presence of an alkali metal, prior to impregnating the bound zeolitic support with the transition metal. Alkali metals such as potassium and cesium may be used.
Claims20
A method of producing a supported catalyst for an aromatization reaction, the method comprising:
- (a) providing a bound zeolite base;
- (b) washing the bound zeolite base with an aqueous solution comprising cesium to produce a cesium enriched zeolite support;
- and
- (c) impregnating the cesium enriched zeolite support with a transition metal and a halogen to produce the supported catalyst;
- wherein the concentration of cesium in the aqueous solution is in a range from about 0.01 M to about 5 M;
- and
- wherein the method does not include a step of contacting the bound zeolite base with an ammonium-containing compound.
4 more elements
Dependencies are inferred from the claim text.