2160. ------. [MATTOX, W. J.] (Standard Oil Development Co.). Hydrocarbon Synthesis. United States Patent 2,623,058, Dec. 23, 1952. Chem. Abs., vol. 47, 1953, p. 2966.

Normally liquid hydrocarbons and oxygenated compounds are synthesized by: Bringing a gas mixture containing CO and H₂ into contact with a bed of fluidized catalyst containing an Fe-group metal under temperature and pressure conditions suitable for formation of a vaporous carbonyl compound of the metal; withdrawing spent solids from the bottom of the bed and the mixture of metal carbonyl vapors and residual gas from above the bed; and bringing the gaseous mixture into contact with a 2d turbulent bed, this time of a substantially inactive carrier material of fluidizable size and with a high disintegration resistance, at conditions of temperature and pressure conducive to decomposition of the carbonyl compound into CO and the metal with deposition of the metal on the carrier. The carrier is withdrawn from the bottom of the 2d bed, cooled, and is then mixed with a stream of the feed vapors to the 2d catalyst zone. With an Fe catalyst, suitable conditions in the 1^st reactor are about 343°-399° and 200-400 p. s. i. The carrier may be mainly SiO₂ impregnated with a small amount of promoter. Usual conditions in the 2d reactor are 121°-399° and 0-600 p. s. i.