Process for producing dimethylamine in preference to mono- and trimethylamines by gas phase catalytic reaction of ammonia with methanol
First Claim
1. In a process for production of dimethylamine by a gas phase reaction of ammonia and methanol over a catalyst of a zeolite selected from the group consisting of mordenite, clinoptilolite, and erionite, wherein a mixture of methylamines is produced, the improvement wherein said catalyst is previously and separately from said reaction of ammonia and methanol contacted with an atmosphere comprising steam at a temperature of from 250°
- to 700°
C., thereby to increase the content of dimethylamine in the methylamine mixture produced above the content of dimethylamine resulting from said reaction over the catalyst in the absence of such contact of the catalyst with steam.
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Abstract
A process for the selective production of dimethylamine in preference to mono- and trimethylamines by a catalytic vapor phase reaction of ammonia and methanol over a zeolite selected from mordenite, clinoptilolite and erionite is disclosed, wherein the improvement is characterized by the fact that the zeolite used has been contacted with steam at a temperature of 250° to 700° C.
83 Citations
8 Claims
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1. In a process for production of dimethylamine by a gas phase reaction of ammonia and methanol over a catalyst of a zeolite selected from the group consisting of mordenite, clinoptilolite, and erionite, wherein a mixture of methylamines is produced, the improvement wherein said catalyst is previously and separately from said reaction of ammonia and methanol contacted with an atmosphere comprising steam at a temperature of from 250°
- to 700°
C., thereby to increase the content of dimethylamine in the methylamine mixture produced above the content of dimethylamine resulting from said reaction over the catalyst in the absence of such contact of the catalyst with steam. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
- to 700°
Specification