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US 11,452,996 B2Granted
Zeolite synthesis with a fluoride source
AssigneeJohnson Matthey Public Limited Company
InventorsHai-Ying Chen, Joseph Fedeyko, Raul Lobo, Trong Pham
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Abstract
Provided are a novel synthesis technique for producing pure phase aluminosilicate zeolite and a catalyst comprising the phase pure zeolite in combination with a metal, and methods of using the same. The pure phase aluminosilicate zeolite can be selected from those having an ITW framework and a silica to alumina ratio of less than about 140 or, an STW framework and a silica to alumina ratio less than about 100.
Claims6
An aluminosilicate zeolite comprising:
- (a) at least about 90% phase pure ITW framework and a silica-to-alumina ratio of less than about 140;
- or
- (b) at least about 90% phase pure STW framework and a silica-to-alumina ratio of less than about 100;
- wherein the aluminosilicate zeolite has a mean crystal size of about 0.5 μm to about 5 μm.
1 more element
Dependencies are inferred from the claim text.