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.