2572. ------. [PALLEMAERTS, F. A. F. [Underground Gasification of Solid Fuels.] Belgian Patent 470,772, February 1947. Chem. Abs., vol. 43, 1949, p. 1170.

Steam required for catalytic conversion of the CO is generated under high pressure in a boiler embedded in the catalyst mass of the converter. The mean temperature of the catalyst is regulated by the pressure at which the steam is generated.