712.    DOLCH, P.  [Action of Steam on Coal.  Study of Superimposed Equilibria.]  Ztschr. Elektrochem., vol. 38, 1932, pp. 596-601; British Chem. Abs., 1933, B, p. 5; Chem. Abs., vol. 26, 1932, p. 5193.

     Action of steam on coal leads to the formation of CO and H₂.  The formation of CO₂ is a secondary reaction (CO+H₂O=CO₂+H₂), the extent of which depends on the active coke surface.  There is no evidence for the reaction C+2H₂O=CO₂+2H₂.  Experiments with CO₂ and H₂, which were passed over coke, confirm this.