THE CHARACTER OF THE INTERACTION BETWEEN HYDROGEN AND COPPER-CONTAINING OXIDE CATALYSTS .2. REACTIONS OF COPPER CHROMITE, REDUCED BY HYDROGEN, AND COPPER-ZINC OXIDE WITH ACETONE AND CARBON-MONOXIDE

In situ high-temperature X-ray diffraction and electron microscopic st udies are used to show that in the absence of hydrogen in the gas phas e, acetone and CO are hydrogenated by adsorbed hydrogen. This is accom panied by the ionization of copper atoms and their further relaxation to regular positions in the oxide structure. Mechanisms of catalytic m ethanol synthesis and catalytic hydrogenation of acetone to isopropano l are discussed.