Process for producing pyridine bases
AssigneeKoei Chemical Company, Limited
InventorsShinkichi Shimizu, Nobuyuki Abe, Masanori Doba, Akira Iguchi, Hiroshi Sato, Ken-ichi Hirose, Youichi Umada
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Abstract
Process for producing pyridine bases by reacting an aliphatic aldehyde and/or ketone with ammonia in gaseous phase in the presence of a catalyst, characterized by using a catalyst which is obtained by modifying a zeolite having an atomic ratio of Si to Al, Fe and/or Ga of 12 to 1,000 and a constraint index of about 0.8 to about 12 with at least one metal ion and/or metal compound selected from the group consisting of thallium, lead and cobalt.
Claims20
A process for producing pyridine bases by reacting an aliphatic aldehyde of the formula R.sup.1 CHO wherein R.sup.1 is hydrogen or alkyl having 1 to 3 carbon atoms or alkenyl having 2 to 3 carbon atoms and/or a ketone of the formula R.sup.2 COR.sup.3 wherein R.sup.2 is methyl or ethyl and R.sup.3 is methyl with ammonia in a gaseous phase, the mole ratio of ammonia to aliphatic aldehyde and/or ketone being 0.5 to 5.0 and the reaction temperature being between 350.degree. to 600.degree. C., in the presence of a catalyst obtained by modifying a zeolite having an atomic ratio of Si to Al, Fe and/or Ga of 12 to 1,000 and a constraint index of about 0.8 to about 12 with at least one ion of and/or at least one compound of a metal selected from the group consisting of thallium, lead and cobalt.
Dependencies are inferred from the claim text.