Isoalcohol synthesis

Details Isoalcohol synthesis Isoalcohol synthesis

1995-12-08

1997-12-30

Ivy, C. Warren

Chemistry: fischer-tropsch processes; or purification or recover

Plural zones each having a fischer-tropsch reaction

Diverse catalysts utilized in at least two zones

518705, 568840, 568909, C07C 2720

Patent

active

057031339

ABSTRACT:
The invention provides for a method of making isoalcohols using syngas-to-alcohol catalyst and method of making it. The catalyst is a highly dispersed, alkali promoted, La stabilized, microcrystalline Cu.sub.2 O having a particle size of .ltoreq.6 nm in the presence of an alumina structural promoter, wherein on a mole % alkali free metals-only basis Cu is present in from 45 to 55%, Zn from 10 to 20%, Al from 10 to 25%, La from 5 to 15%, and wherein the alkali is from 0.01 to 0.91% K and from 3 to 6.5% Cs. The method of making it involves coprecipitation at a constant pH from a solution of soluble metal salts of copper, zinc, lanthanum and aluminum with an alkali hydroxide, washing the coprecipitate in the essential absence of CO.sub.2, drying and calcining it, then contacting it with K and Cs to form the promoted catalyst. The promoted catalyst is dried and recalcining to produce a catalyst precursor with highly dispersed CuO crystallites. The catalyst is activated in flowing hydrogen.

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J. C. Slaa et al., Catalysis Today, 15 (1992) 129-148.
Wilhelm Keim et al., Catalysis Letters 3 (1989) 59-64.
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