3842. ----- [VOORHIES, A.] (Standard Oil Development Co.). [Fluidized Synthesis Process.] French Patent 918,720, Feb. 17,1947; appl. filed Dec. 11, 1945; in United States, Dec. 14, 1944. Kainer, p. 204; Chem. Zentralb., 1947, II, p. 861.

Powdered catalyst with a grain size of 30- to 400-mesh is kept suspended in the synthesis zone by the synthesis gas. Simultaneously, a part of the catalyst is periodically removed and new catalyst admitted so that the catalyst level remains constant.