Methanol synthesis using a catalyst combination of alkali or alk

Details Methanol synthesis using a catalyst combination of alkali or alk Methanol synthesis using a catalyst combination of alkali or alk

1993-03-31

1995-01-24

Mars, Howard T.

Chemistry: fischer-tropsch processes; or purification or recover

Liquid phase fischer-tropsch reaction

568885, C07C 2908, C07C 29154, C07C 2916

Patent

active

053843355

ABSTRACT:
The present invention relates to a novel route for the synthesis of methanol, and more specifically to the production of methanol by contacting synthesis gas under relatively mild conditions in a slurry phase with a catalyst combination comprising reduced copper chromite and basic alkali salts or alkaline earth salts. The present invention allows the synthesis of methanol to occur in the temperature range of approximately 100.degree.-160.degree. C. and the pressure range of 40-65 atm. The process produces methanol with up to 90% syngas conversion per pass and up to 95% methanol selectivity. The only major by-product is a small amount of easily separated methyl formate. Very small amounts of water, carbon dioxide and dimethyl ether are also produced. The present catalyst combination also is capable of tolerating fluctuations in the H.sub.2 /CO ratio without major deleterious effect on the reaction rate. Furthermore, carbon dioxide and water are also tolerated without substantial catalyst deactivation.

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Monts et al., Applied Catalysis, 22, 1986 pp. 123-136.
Wainwright, Catalytic Processes for Methanol Synthesis, Elsevier Science Publishers Amsterdam 1988 pp. 95-108.

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