Abstract
In order to hydrogenate highly unsaturated fatty oils at atmospheric pressure, it is necessary to add a promoter to reduced copper which is employed as the catalyst. When the copper-chromium oxide catalyst is subjected to thermal treatment, it remains intact up to 550°, but above this temperature the reduction of copper oxides slows down. This means that here is no correlation between the extent of oxidation and the promoter action of chromium oxide. Copper chromate derived from potassium chromate can also be converted though reduction into a copper-chromium oxide catalyst with high activity.
