Method for maintaining the activity of zeolite catalysts

Details Method for maintaining the activity of zeolite catalysts Method for maintaining the activity of zeolite catalysts

1989-05-17

1991-11-26

Ivy, C. Warren

Organic compounds -- part of the class 532-570 series

Organic compounds

Amino nitrogen containing

564474, C07C 4500

Patent

active

050684426

ABSTRACT:
There is provided a method for maintaining the activity of a zeolite catalyst in the catalytic production of methylamines from methanol and ammonia using a zeolite catalyst as at least one of catalysts applied, which comprises controlling the amount of aldehyde compounds as impurities flowing into a zeolite catalyst layer to about 0.15 g/hr.kg-cat. or lower, as calculated in terms of formaldehyde.

REFERENCES:
patent: 4370503 (1983-01-01), Brake
patent: 4418214 (1983-11-01), Tarcotte
patent: 4582936 (1986-04-01), Ashina et al.

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