3295.     STORCH, H. H., AND PINKEL, I. I.  Preparation of an Active Cobalt-Copper Catalyst for the Water-Gas Shift Reaction.  Ind. Eng. Chem., vol. 29, 1937, p. 715; Chem. Abs., vol. 31, 1937, p. 5977.

        If a mixture of CoCO₃ and 5-25% of CuO is heated rapidly (in about 3 min.) from room temperature to 900°-1,100° C., a sintered, pumicelike mass of granules is obtained, which has excellent mechanical properties and is a very active catalyst when properly reduced and subsequently protected from S poisoning.  Slower heating of the mixture results in a powder of inferior quality.  A mixture of water gas with 4 vol. of steam was passed through this catalyst at 310° C. for more than 100 hr. without impairing the activity.  The original water gas contained about 68% H₂, 23% CO, and small amounts of CO₂, N₂, CH₄, and O₂.  The average analysis of the gas after the catalytic treatment was 73.8% H₂, 0.3% CO, 18.7% CO₂, with the remainder N₂ and CH₄.  The activity of the catalyst is destroyed rapidly by contact with S compounds but easily can be regenerated to its original properties by heating to 900° C. in a stream of air.