849.    EROFEEV, B. V., RUNTSO, A. P., AND VOLKOVA, A. A.  [Kinetics of the Catalytic Reduction to Hydrocarbons of Carbon Monoxide by Hydrogen on a Cobalt-Thorium Catalyst.]  Acta Physiocochim.  U.R.S.S., vol. 13, 1940, pp. 111-122 (in German); Chem. Abs., vol. 35, 1941, pp. 1690-1691.

     Kinetics of the reaction nCO + 2nH₂ = C_nH_2n + nH₂O at 200° were studied on a Co : Th : SiO₂ = 100 : 15 : 100 catalyst prepared by treatment of the nitrates with K₂CO₃, addition of ethyl orthosilicate, and reduction with H₂ at 400°.  With carefully purified H₂ and CO the yield of liquid C_nH_2n was 60-70 cc. per m.³ gas.  The experimental data satisfy the equations, A = a+(b/u_o), u_k = cu_o – b, π = Au_o = au_o + b, where u_o and u_k = volume velocity of gas entering and leaving, A = contraction, π = capacity and a, b, c are constants.  These results indicate that the reaction is of zero order on a catalytic surface of the first kind.  The capacity increases with increasing streaming velocity; this fact indicates that the adsorption of the reaction products depends strongly on their partial pressures; greater streaming velocity increases the surface available for reaction.

     ERSHOV, N. I.  See abs. 798, 802, 802b, 802c.