1706. ------. [INTERNATIONAL HYDROCARBON SYNTHESIS CO.] [Support for Catalyst for Hydrogenation of Carbon Monoxide.] French Patent 862,105, Feb. 27, 1941: appl. filed Dec. 5, 1939. Chem. Abs., vol. 42, 1948, p. 6091.

Diatomaceous earth is leached with a dilute acid, such as HNO₂ or HCl, washed, dried, and calcined at 500° -550° . The usual Co and Th catalysts are then supported on this earth, an increase in liquid hydrocarbons being obtained from the CO-H₂ reaction.