825. GORIN, E., AND GORIN, M. H. (Socony-Vacuum Oil Co.). Conversion of Dimethyl Ether. United States Patent 2,456,584. Dec. 14, 1948: appl. filed Nov. 18. 1946. Serial No. 710,476: 8 claims (Cl. 260-668). Chem. Abs., vol. 43, 1949. p. 3435.

Patent Abstracts

825. GORIN, E., AND GORIN, M. H. (Socony-Vacuum Oil Co.). Conversion of Dimethyl Ether. United States Patent 2,456,584. Dec. 14, 1948: appl. filed Nov. 18. 1946. Serial No. 710,476: 8 claims (Cl. 260-668). Chem. Abs., vol. 43, 1949. p. 3435.

Dimethyl ether is converted to liquid hydrocarbons by the following steps: 18.2 mol. % of dimethyl ether and 81.8 mol. % of isobutene is passed over an alumina-silica catalyst at 370º C., 150 p. s. i. pressure, and a space velocity of 6.8 vol. of gaseous mixture per vol. of catalyst per min. The product mixture contains CH₄, normally gaseous hydrocarbons containing 2-4 C atoms per mol., normally liquid hydrocarbons and H₂O are separated from the product mixture. The gaseous hydrocarbons are recycled, and the liquid hydrocarbons are recovered. Since MeOH may be readily produced from synthesis gas obtained by reaction of steam with natural gas or coal, or by partial oxidation of CH₄, this invention provides an indirect method for conversion of coal or natural gas to liquid hydrocarbons. 3 United States patents cited.

GORIN, M. H. See abs. 1825.