Abstract
The reduction of copper oxide in H. Adkins' copper-chromium oxide catalyst with hydrogen at atmospheric pressure commences at 120°. The reaction in which highly oxidized chromium is reduced to Cr2O3 begins at 140° and proceeds slowly. It takes place, however, with considerable rapidity when the copper oxide catalyst co-exists. It is reduced copper that actually has a catalytic action in the hydrogenation of fatty oils. Copper chromate is likewise reduced into reduced copper and Cr2O3.
