Catalyst with improved activity/selectivity for light naphtha aromatization
AssigneeSaudi Basic Industries Corporation
InventorsAlla Khanmamedova, Scott Stevenson
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Abstract
In an embodiment, a method for making a catalyst, comprises: forming a mixture comprising a germanium source, an alkali metal source, an aluminum source, and a silica source, wherein the mixture has a pH; adjusting the pH of the mixture to a value of greater than or equal to 9.5; crystallizing and calcining the mixture to form a zeolite; depositing platinum on the zeolite; and calcining the zeolite to form the final catalyst. The final catalyst is non-acidic and has an aluminum content of less than or equal to 0.75 wt % based on the total weight of the final catalyst excluding any binder and extrusion aide and a Si:Al2 mole ratio of greater than or equal to 125.
Claims15
A method for making a catalyst, comprising:
- forming a mixture comprising a germanium source, an alkali metal source, an aluminum source, and a silica source, wherein the mixture has a pH;
- adjusting the pH of the mixture to a value of 9.5 to less than 13;
- crystallizing and calcining the mixture to form a zeolite;
- a medium pore zeolite having an average pore size of 5 to 8 Å;
- depositing platinum on the zeolite;
- and
- calcining the zeolite to form the final catalyst;
- wherein the final catalyst is non-acidic and has an aluminum content of less than or equal to 0.75 wt % based on the total weight of the final catalyst excluding any binder or extrusion aide, and a final Si:Al2 mole ratio of 125 to 211;
- wherein the final catalyst has a Ge content of 0.1 to 3 wt % based on the total weight of the final catalyst excluding any binder and extrusion aide.
Dependencies are inferred from the claim text.