Process for preparing methylamines

摘要

A process for preparing methylamines is disclosed herein which comprises the step of reacting methanol with ammonia in the presence of a mordenite in which the ratio of the length of mordenite crystals in a c axis direction to that of the mordenite crystals in an a axis direction or a b axis direction, c/a or c/b is 2 or more, whereby the synthetic activity of the methylamines can be maintained at a high level, and the production ratio of trimethylamine can be inhibited to a low level of about several percent to predominantly produce dimethylamine and monomethylamine.