Method of producing dimethyl ether

Details Method of producing dimethyl ether Method of producing dimethyl ether

1994-10-12

1995-11-14

Lone, Werren B.

Chemistry: fischer-tropsch processes; or purification or recover

Liquid phase fischer-tropsch reaction

518713, C07C 4101

Patent

active

054667208

ABSTRACT:
In a method of producing dimethyl ether from a mixed gas containing carbon monoxide and either or both of hydrogen and water vapor or a mixed gas of them further containing carbon dioxide, the improvement which comprises using a mixed catalyst prepared by pulverizing a mixed catalyst containing at least zinc oxide, copper oxide or chromium oxide, and aluminum oxide, compressing to bind them by a high pressure press and then pulverizing again or a mixed catalyst comprising at least zinc oxide, copper oxide and alumina, in a slurry state formed by suspending in a solvent. In the method of the invention, the yield of dimethyl ether is high, and the conversion water produced through reaction to hydrogen is high. There is no problem of clogging with catalyst, and mechanical strength is not required. Besides, the applicable range of the ratio of carbon monoxide and hydrogen is wide and the reaction is possible in the presence of carbon dioxide in a high concentration. Moreover, affects by impurities and catalyst poisons are small.

REFERENCES:
patent: 5218003 (1993-06-01), Lewnard et al.
patent: 5389689 (1995-02-01), Fujimoto et al.

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