Catalyst precursor

摘要

A method is described for making a dry particulate catalyst precursor comprising one or more amorphous metal hydroxycarbonates of Cu and Zn, including Georgeite and/or zincian Georgeiteby (i) contacting a solution comprising a soluble copper compound and a soluble zinc compound, with a supercritical carbon dioxide antisolvent to precipitate the catalyst precursor, (ii) recovering the precipitate and (iii) drying the precipitate.