| 摘要 |
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 Cu2O having a particle size of </=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 CO2, 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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