Patent ID: 6232502
Filing Date: 2001-05-15
Classification: C07C

Abstract:
A method for the production of monomethylamine, dimethylamine, and trimethylamine comprising contacting methanol and/or dimethylether and ammonia in amounts sufficient to provide a carbon/nitrogen (C/N) ratio from about 0.2 to about 1.5 and at a reaction pressure from 7-7000 kPa and a reaction temperature from 250.degree. C. to 450.degree. C., in the presence of a catalytic amount of an acidic zeolite which has a chabazite crystalline structure, wherein said chabazite is characterized by a ratio of silicon to aluminum (Si:Al) of at least 12:1 and wherein methanol and/or dimethylether is selectively converted to monomethylamine, dimethylamine and trimethylamine.