Pyrolytic and Catalytic Decomposition of Hydrocarbons iSC VLADIMIR HAENSEL and MELVIN J. STERBA UNIVERSAL OIL PRODUCTS COMPANY, RIVERSIDE, ILL.FOLLOWING the first literature review (44) on the subject of hydrocarbon decomposition reactions, this summary includes an inspection and brief digest of material that has appeared in the literature during 1948 and the early part of 1949.