2705. ------. [PITTSBURGH CONSOLIDATION COAL CO.] Hydrogen. British Patent 673,333, June 4, 1952. Chem. Abs., vol. 47, 1953, p. 7744.

H2 is produced by passing steam and CH4 in a ratio of 2-4:1 over granular CaO in an amount equal to 2 times the weight of the C in the CH4. The reaction zone is held 1,500-1,650 F. and 20-50 atm.; and the inlet temperature should be at least 100 F. above the outlet temperature. The CaO is regenerated by heating to 1,750-1,800 F.

------. See abs. 827, 2760.