2985.     ---------------.  [RUMFORD, F.]  Correlation of Adsorption and Catalytic Activity.  II.  Carbon Monoxide and Hydrogen Adsorption on Zinc-Chromium Catalysts.  Jour. Roy. Tech. Coll. (Glasgow), vol. 4, 1940, pp. 643-649; Chem. Abs., vol. 34, 1940, pp. 4971-4972.

        In 2 series of experiments, one at 300°, 360°, and 400° and the other at 360°, adsorption of CO on Zn-Cr catalyst decreased with increasing Zn content of the catalyst until the catalyst contained approximately 80 at. % Zn, then it passed through a maximum at approximately 85-88 at. % Zn.  Adsorption of H₂ passed through a maximum at 60 at. % Zn in the first series, but, in the second series of experiments, the maximum was not determined, because values were obtained only with catalysts up to 78 at. % Zn content.  IN the decomposition of MeOH over Zn-Cr catalyst at 360°, each of 2 series of experiments showed a maximum decomposition with catalyst containing approximately 65 at. % Zn.  Since approximately an equal number of molecules of H₂ and CO are adsorbed on catalysts, both series, containing 60-70 at. at % Zn, which includes the catalyst composition corresponding to greatest MeOH decomposition, reaction is possibly greatest when the H₂ and CO are adsorbed in equal molecular quantities and less when one of the gases is adsorbed in excess.  However, this does not explain why MeOH decomposition did not approach zero when adsorption of CO became zero in one series of results with a catalyst containing approximately 77 at. % Zn.

        RUNTSO, A. P.  See abs. 849.

        RUPING, H.  See abs. 1402.

        RUPP, J.  See abs. 1782.