711.    DOLCH, M., AND KOLLWITZ, J.  [Reaction of Water Vapor Upon Glowing Coke.  Contribution to the Oxidation of Coal.]  Braunkohle, vol. 31, 1932, pp. 607-610, 628-632, 645-649; Chem. Abs., vol. 26, 1932, p. 5735.

     In studying effects of rate of steam flow upon composition of gas formed, the reaction C+H₂O=CO+H₂ with bituminous cokes is found to be more rapid, and the reaction C+2H₂O=CO₂+2H₂ is more rapid with brown-coal cokes.  With cokes of intermediate coals, this distinction is not noted.  Thus, not only temperature and time, but the constitution of coal determine gas consumption.  Apparatus for coke gasification with measured amounts of steam is described.