2739. ------. [RAMAGE, A. S.] (Coals & Chemicals, Ltd.). Converting Olefinic Hydrocarbons Into Aromatic Hydrocarbons. United States Patent 2,242,836, May 20, 1941; appl. filed June 7, 1937, Serial No. 146,895 (Cl. 260-449). Chem. Abs., vol. 35, 1941, p. 5509.

Describes arrangement of apparatus and a process of converting hydrocarbons of the olefinic series into hydrocarbons of the aromatic series and low-boiling alcohols, which involves successive dehydrogenation of the olefinic hydrocarbons in the vapor phase by treating them, at substantially atmospheric pressure and at a temperature of about 1,100-1,300 F., with steam in an amount equal to about 10-30% of that of such olefinic vapors and with CO in an amount approximately equal to the combined amounts of such vapors and steam in the presence of finely divided Fe.