1193a.    -----------------.  [GHOSH, J. C., SASTRI, M. V. C., AND KINI, K. A.] Adsorption of Hydrogen and Carbon Monoxide and Their Mixtures by Cobalt Fischer-Tropsch Catalysts.  Ind. Eng. Chem., vol. 44, 1952, pp. 2,463-2,470.

         In order to gain an insight into the nature of the reactive substrate in Fischer-Tropsch synthesis, the adsorption of H₂ and CO was studied at various temperatures from the pure gases as well as from their mixtures on 2 Co catalysts, 1 of which contained Cr₂O₃ as a promoter.  Both gases underwent activated adsorption at fairly low temperatures.  Cr₂O₃ enhanced the amounts and rates of adsorption of both, lowered their activation energies of adsorption, and thus acted as a promoter.  Experiments were conducted with 1CO+1H₂ and 1CO+2H₂ mixtures, using a thermal conductivity meter for analysis.  The adsorption of each constituent was found to be markedly influenced by the presence of the other.  Kinetic studies revealed that the high initial adsorption of H₂ was followed by a partial replacement of adsorbed H₂ by CO.  Near the minimum temperature of appreciable reaction, the concurrent adsorptions of CO and H₂ increased with the partial pressures in the ratio of 2CO:1H₂.  The observations reported in this paper point to the formation of chemisorbed CO-H₂ complexes as 1 of the 1^st steps in the transformation of the substrate.  The results are also in correlation with reaction-performance data previously reported on these catalysts.