414.    BURWELL, R. L., JR., AND TAYLOR, H. S.  Activated Adsorption of Hydrogen and Carbon Monoxide on Zinc Oxide – Effect of Water Vapor.  Jour. Am. Chem. Soc., vol. 58, 1936, pp. 1753-1755; Chem. Abs., vol. 30, 1936, p. 7954.

                   H₂O vapor minimizes surface reduction of ZnO catalysts at lower temperatures.  It is strongly adsorbed from gas mixtures by those fractions of the ZnO surface to which the gas mixture has access.  Saturation of ZnO surfaces by H₂O markedly inhibits the activated adsorption of H₂ and CO.