896. GUINOT, H. M., AND USINES DE MELLE. [Hydrogenation Catalysts.] French Patent 973,322, Feb. 9, 1951. Chem. Abs., vol. 47, 1953. p. 3330.

Patent Abstracts

CuO, preferably on an inert support such as SiO₂ or pumice stone, is reduced by H₂ at 150º in tubes surrounded by H₂O. N₂ may first be passed over the CuO and H₂ gradually admitted to replace the N₂. The space around the tubes is at a predetermined pressure associated with the temperature of the reduction. Organic substances are then reduced by passing them with H₂ through the tubes. Examples are: (1) With 40 tubes 2.5 m. long and 76 mm. diameter and 350 l. of pastilles of CuO or pumice stone, the intertube space is heated to 135º by passing in steam, with the pressure kept at 4 kg. per cm.² When the CuO has been reduced, 120 l. Me₂CO per hr. is passed in with 20 times the theoretical amount of H₂ at 150º. The yield of iso-PrOH is theoretical, with 240 l. Me₂CO per hr. the yield is 87%. (2) Similarly 90 l. MeCH : CHCHO per hr. at 160º gives 100% BuOH. (3) PrOH : CEtCHO (75 l. per hr.) at 160º gives 100% BuOH. (3) PrOH : CEtCHO (75 l. per hr.) at 160º gives a quantitative yield of BuCHEt CH₂OH, with a reduced mixture of CuO activated by CeO. (4) Furfural (90 l. per hr.) at 170º gives a mixture of 2-methylfuran 40 and furfuryl alcohol 60%. (5) AcH at 65º and 187 mm pressure gives 100% EtOH.

GULF OIL CORP. See abs. 436, 437, 438.

GULF RESEARCH & DEVELOPMENT Co. See abs. 446, 587, 807, 1059, 1060, 1061, 1062, 1093, 2387, 2388, 2389, 2390, 2391, 2392, 3867, 3868.