Mixed alcohols production from syngas
AssigneeThe Dow Chemical Company
InventorsRex R. Stevens, Mark M. Conway
Life of this patent
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Abstract
Mixed alcohols are produced from carbon monoxide and hydrogen gases using an easily prepared catalyst/co-catalyst metal catalyst. The catalyst metals are molybdenum, tungsten or rhenium. The co-catalyst metals are cobalt, nickel or iron. The catalyst is promoted with a Fischer-Tropsch promoter like an alkali or alkaline earth series metal or a smaller amount of thorium and is further treated by sulfiding. The composition of the mixed alcohols fraction can be selected by selecting the extent of intimate contact among the catalytic components.
Claims16
A process for selectively producing mixed alcohols from synthesis gas comprising contacting a mixture of hydrogen and carbon monoxide with a catalytic amount of a catalyst containing components of
- (1) a catalytically active metal of molybdenum or tungsten, in free or combined form;
- (2) a cocatalytic metal of cobalt or nickel in free or combined form;
- and
- (3) a Fischer-Tropsch promoter of an alkali or alkaline earth series metal, in free or combined form;
- said components combined by dry mixing, mixing as a wet paste, wet impregnation, and then sulfided, said catalyst excluding rhodium, ruthenium and copper;
- at a pressure of at least about 500 psig and under conditions sufficient to form said mixed alcohols in at least 20 percent CO.sub.2 free carbon selectivity, said mixed alcohols containing a C.sub.1 to C.sub.2-5 alcohol weight ratio of less than about 1:1.
Dependencies are inferred from the claim text.