3612.     WATANABE, S.  Synthesis of Benzine by Catalytic Reduction of Carbon Monoxide at Atmospheric Pressure.  VI.  Consumption of Carbon Monoxide in Passing Through Catalyst Layer.  Jour. Soc. Chem. Ind. (Japan), vol. 46, 1943, pp. 1128-1130; Chem. Abs., vol. 43, 1949, p. 2406.

        Synthesis of benzine was carried out using gas containing CO and H₂ in the ratio 1:2 and a catalyst of the composition of CO:Cu:ThO₂=9:1:1 at 197° under pressure of 7-369 mm.  It was found that the relation x=ap^b holds between the reaction pressure, p, and x, which represents the yield of oil, contraction of gas volume, or consumption of CO, with a and b as constants.  As the above formula is of the same form as that of Freundlich’s adsorption isotherm, y=apⁿ, it is observed that there is a direct relation between the consumption of CO and the adsorption of CO.  The formula x=ap^b holds only when p is 30-200 mm.  Below 30 mm. b increases gradually to 1 at a very low value of p, whereas, above 200 mm. b gradually decreases to zero at a large value of p.  When the feed gas passes through the catalyst layer, the relation between the distance traversed L_t and the partial pressure P_t can be expressed by a general formula 1/bp_t^b-1/bp_t^b=aL_t.  Since this is a hyperbola, the rate of reaction in the catalyst layer can be represented by a hyperbola.