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US 11,752,495 B2Granted
Zeolite catalyst
AssigneeVertellus Holdings LLC
InventorsColin H. McAteer, Mirza S. Baig, Kayla L. Powell, James W. Shogren-Harris, Rajamani Gounder
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Abstract
The present disclosure relates to the preparation of pyridine derivatives, such as α-picoline or α-parvoline, and catalysts useful for the selective preparation of such pyridine derivatives. Particularly, the present disclosure relates to the selective preparation of certain pyridine derivative using dealuminated zeolite catalysts.
Claims20
A process for preparing a pyridine base comprising
- contacting ammonia with a C2-C6 aldehyde in the presence of a metal loaded zeolite beta catalyst comprising a metal and a zeolite beta,
- wherein the metal loaded zeolite beta catalyst is prepared by a process comprising
- i. contacting tetraethyl orthosilicate with aqueous tertaethylammonium hydroxide to provide a silicate solution;
- ii. contacting the silicate solution with a metal source to provide a metal-silicate solution;
- iii. contacting the metal-silicate solution with hydrofluoric acid to provide a metal-silicate gel;
- and
- iv. contacting the metal-silicate gel with dealuminated zeolite beta seeds to provide the metal loaded zeolite beta catalyst.
4 more elements
A process for preparing a pyridine base comprising
- contacting ammonia with a C2-C6 aldehyde in the presence of a metal loaded zeolite beta catalyst comprising a metal and a zeolite beta,
- wherein the metal loaded zeolite beta catalyst is prepared by a process comprising
- contacting a dealuminated zeolite beta with a metal source to provide the metal loaded zeolite beta catalyst.
Dependencies are inferred from the claim text.