495. DINWIDDIE, J. A. (Standard Oil Development Co.) Olefins From Oxides. United States Patent 2,542,487, Feb. 20, 1951: appl. filed Oct. 17, 1947, Serial No. 780,387; 3 claims (Cl. 260-682). Chem. Abs., vol. 45, 1951, p. 4431.

Patent Abstracts

Olefins are prepared from monoolefin oxides, such as those obtained as by products in the Fischer-Tropsch synthesis, by passing the oxide vapors at 450°-650° F. and 50-300 p.s.i. pressure over a catalyst composed of Fe, Ni, or Co oxides promoted by 1%-8% K₂CO₃. C₃H₆ was prepared by passing (CH₂)₃O over Fe₂O₄ containing 3% K₂CO₃ at 575° F. and 150 p.s.i. at a rate of 0.3 vol. per vol. of catalyst per hr. to yield a product containing 35.6% by vol. of C₃H₆.