Process for the production of pyridine or alkyl substituted pyridines
AssigneeNepera, Inc.
InventorsDavid Feitler, Wolfgang Schimming, Henry Wetstein
Life of this patent
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Abstract
A process for preparing pyridine or alkyl substituted pyridines in high yield, comprises reacting a C.sub.2-5 -aldehyde, a C.sub.3-5 -ketone or a mixture thereof, ammonia and, optionally, formaldehyde, in the gas phase in contact with a fluidized or otherwise movable bed of a catalytically effective amount of a crystalline aluminosilicate zeolite catalyst in the acidic form and having a constraint index of about 1 to about 12, with an actual contact time of the reactants with the catalyst which is at least as great as said actual contact time when the reaction is conducted in a 1 inch diameter fluid bed reactor with a pseudo contact time of at least about 2.5 seconds.
Claims21
In a process for preparing pyridine or alkyl substituted pyridines in high yield, comprising reacting a C.sub.2-5 -aldehyde, a C.sub.3-5 -ketone or a mixture thereof, ammonia and, optionally, formaldehyde, in the gas phase, the improvement comprising performing said reaction in contact with a fluidized or otherwise movable bed of a catalytically effective amount of a crystalline aluminosilicate zeolite catalyst in the acidic form and having a constraint index of about 1 to about 12 and a ratio of SiO.sub.2 to Al.sub.2 O.sub.3 of about 12-1000.
A process of claim 12 wherein the ratio of SiO.sub.2 to Al.sub.2 O.sub.3 in the catalyst is about 18-400.
Dependencies are inferred from the claim text.