Synthesis of amines using boron-containing molecular sieve CHA

Details Synthesis of amines using boron-containing molecular sieve CHA Synthesis of amines using boron-containing molecular sieve CHA

2007-11-16

2008-12-09

Davis, Brian J (Department: 1621)

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

Organic compounds

Amino nitrogen containing

C564S474000

Reexamination Certificate

active

07462744

ABSTRACT:
A process for producing methylamine or dimethylamine comprising reacting methanol, dimethyl ether or a mixture thereof, and ammonia in the gaseous phase in the presence of a catalyst comprising a boron-containing molecular sieve having the CHA crystal structure; and comprising (1) silicon oxide and (2) boron oxide or a combination of boron oxide and aluminum oxide, iron oxide, titanium oxide, gallium oxide and mixtures thereof; and wherein the mole ratio of silicon oxide to boron oxide in said boron-containing molecular sieve is between 15 and 125. Also a method for producing methylamine or dimethylamine comprising selecting the boron-containing molecular sieve having the CHA crystal structure and the desired mole ratio of silicon oxide to boron oxide and reacting methanol, diemethyl ether or a mixture thereof and ammonia in the presence of the catalyst.

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