Synthesis of pyridine and alkylpyridines
AssigneeMobil Oil Corporation
InventorsClarence D. Chang, William H. Lang
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Abstract
A method is provided for synthesizing pyridine or alkylpyridines by reacting ammonia and a carbonyl reactant which is an aldehyde containing 2 to 4 carbon atoms, a ketone containing 3 to 5 carbon atoms or mixtures of said aldehydes and/or ketones under effective conditions in the presence of a catalyst comprising a crystalline aluminosilicate zeolite having a silica to alumina ratio of at least about 12 and a constraint index within the approximate range of 1 to 12 and recovering from the resulting reaction mixture, a product containing at least one compound of pyridine or an alkylpyridine. Addition of methanol and/or formaldehyde to the feed improves selectivity to unsubstituted pyridine.
Claims16
A method for synthesizing alpha picoline which comprises effecting reaction between ammonia and a carbonyl reactant selected from the group consisting of aldehydes containing from 2 to 4 carbon atoms, ketones containing from 3 to 5 carbon atoms and mixtures of said aldehydes and ketones under suitable reaction conditions of temperature, pressure and space velocity in the presence of a catalyst comprising a crystalline aluminosilicate zeolite having a silica to alumina ratio of at least about 12 and a constraint index within the approximate range of 1 to 12, which zeolite has been ion exchanged with cadmium and recovering from the resulting reaction mixture, a product containing alpha picoline.
Dependencies are inferred from the claim text.