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.
Claims20
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 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;
- 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 greater than or equal to 125.
A catalyst comprising:
- a zeolite comprising Si, Al, and Ge in the framework with Pt deposited thereon;
- wherein the catalyst has an Si:Al2 mole ratio of greater than or equal to 125, an Si:Ge mole ratio of 40 to 400, and an Na:Al mole ratio of 0.9 to 2.5,
- wherein the catalyst has an aluminum content of less than or equal to 0.75 wt %,
- wherein the catalyst is non-acidic.
A method for the aromatization of hydrocarbons comprising:
- contacting an alkane containing 6 to 12 carbon atoms per molecule with a catalyst comprising:
- a zeolite comprising Si, Al, and Ge in the framework with Pt deposited thereon;
- wherein the catalyst has an Si:Al2 mole ratio of greater than or equal to 125, an Si:Ge mole ratio of 40 to 400, and an Na:Al mole ratio of 0.9 to 2.5, wherein the catalyst has an aluminum content of less than or equal to 0.75 wt % excluding any binder and extrusion aide.
Dependencies are inferred from the claim text.