PATENTS

3107.----- [RUHRCHEMIE, A. G.]  [Process for the Catalytic Cracking of Hydrocarbons.]  German Patent Appl. R 108,555,R 540, filed Oct. 17, 1940 (Cl. IV d-23 b).  TOM Reel 39, bag 3,453, items 1 and 2.

In the catalytic cracking hydrocarbons, such as those b. 200°-360° obtained from the hydrogenation of CO, to olefinic low-boiling hydrocarbons, which are easily polymerized to antiknock gasoline, the operation is performed at normal or increased pressure and in the presence of catalysts consisting chiefly of acid-activated bleaching earths impregnated with small amounts, 1-3%, of a mixture of H₃BO₃-H₃PO₄ or with H₃PO₄ alone an if desired activated with Co or a similar salt.