3250.     ---------------.  [SRIKANTAN, B. S.]  Reactions at the Surface of Hot Metallic Filaments.  III.  The Reaction CO₂+H₂→H₂O+CO on Platinum Coated With Barium Oxide.  Jour. Indian Chem. Soc., vol. 6, 1929, pp. 959-967; Chem. Abs., vol. 24, 1930, p. 2036.

        Layer of BaO, formed on a Pt wire by thermal decomposition of Ba(NO₃)₂, adsorbs 1 of the reactants, CO₂, and gives reproducible results in studying the formation of CO and H₂O at 612°-826°.  The reaction velocity rises slowly at the beginning of the reaction until a steady state is reached.  The rate increases with increasing pressures of CO₂ up to 300 mm. and is depressed by excess H₂.  The temperature coefficient and energy of activation fall with rise of temperature.