Back to results
US 11,602,738 B2Granted
Aromatization catalyst activity and selectivity improvement with alcohol addition during catalyst preparation
AssigneeChevron Phillips Chemical Company LP
InventorSikander Hakim
Life of this patent
Estimating the term…
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 a transition metal precursor in a solvent composition containing water and from about 5 wt. % to about 50 wt. % of a C1 to C3 alcohol compound, a chlorine precursor, and a fluorine precursor. The resultant supported catalysts have improved catalyst activity and selectivity, as well as lower fouling rates in aromatization reactions.
Claims20
A method of producing a supported catalyst, the method comprising:
- (a) impregnating a bound zeolite base with, in any order:
- a transition metal precursor in a solvent composition containing water and from about 5 wt. % to about 50 wt. % of a C1 to C3 alcohol compound,
- a chlorine precursor, and
- a fluorine precursor, to form an impregnated zeolite base;
- and
- (b) drying and then calcining the impregnated zeolite base to produce the supported catalyst, wherein the supported catalyst comprises, based on the total weight of the supported catalyst:
- from about 0.1 wt. % to about 10 wt. % of a transition metal;
- from about 0.1 wt. % to about 5 wt. % of chlorine;
- and
- from about 0.1 wt. % to about 5 wt. % of fluorine.
7 more elements
Dependencies are inferred from the claim text.