Ammoxidation of paraffins to acrylonitrile in the presence of zeolite catalysts
AssigneeThe Standard Oil Company
InventorsThomas G. Attig, Kenneth J. Kuruc, Robert K. Grasselli
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Abstract
The ammoxidation of n-butane to acrylonitrile and hydrogen cyanide by a process comprising reacting a gaseous mixture containing n-butane, ammonia and oxygen in the presence of a metal promoted highly siliceous zeolite catalyst, where the zeolite is one comprising ZSM-5, ZSM-5-type aluminosilicate zeolites, or aluminum-free ZSM-5-type zeolites, is disclosed.
Claims13
A process for the production of acrylonitrile by the ammoxidation of a reactant selected from the group consisting of n-butane, isobutane and propane, the process comprising contacting the gaseous reactant and ammonia with molecular oxygen at a temperature of 300.degree. C. to 700.degree. C. in the presence of a catalyst having the following formula:
- M.sub.a (zeolite)
- where
- M is at least one of a Group VIII metal, Cu, Ag, Zn, W, Mo, or Cr or oxides thereof;
- zeolite is an aluminosilicate zeolite having a silica to aluminia ratio greater than 12, or an aluminum-free zeolite wherein said zeolite has an effective pore aperture in the range of about 5 to 6.5 Angstroms;
- and
- a is a number from 0.0001 to about 0.50.
Dependencies are inferred from the claim text.