Methods for producing hierarchical mesoporous zeolite beta
AssigneeSaudi Arabian Oil Company
InventorKe Zhang
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Abstract
Embodiments of the present disclosure are directed to a method of producing hierarchical mesoporous zeolite beta. The method comprises providing a parent zeolite beta with a silicon to aluminum molar ratio of 5 to 50. The method further comprises, mixing the parent zeolite beta with an aqueous metal hydroxide solution and heating the parent zeolite beta and aqueous metal hydroxide mixture to a temperatures greater than or equal to 100° C. to produce the hierarchical mesoporous beta zeolites having and average pore size greater than 8 nm. In embodiments, the hierarchical mesoporous beta zeolites are produced without a templating agent or pore-directing agent.
Claims8
A method for producing hierarchical mesoporous beta zeolites comprising:
- providing parent beta zeolites having a molar ratio of silicon to aluminum of from 5 to 50;
- mixing the parent beta zeolites with an aqueous metal hydroxide solution, where the aqueous metal hydroxide is an alkali metal hydroxide or an alkali earth metal hydroxide, or both;
- and
- heating the parent beta zeolites and aqueous metal hydroxide mixture at an autogenous pressure to a temperature greater than or equal to 100° C. to produce the hierarchical mesoporous beta zeolites having an average pore size greater than 8 nanometers;
- where the hierarchical mesoporous beta zeolites are produced without a templating agent or a pore-directing agent;
- and
- where the produced hierarchical mesoporous beta zeolites have a total pore volume greater than or equal to 0.30 cm3/g.
Dependencies are inferred from the claim text.