Hydrogenolysis of organic substances by carbon monoxide-water mixture. Examination of the hydrogenolysis of diphenylmethane on various catalysts

Catalytic hydrogenation of nitrobenzene by use of a mixture of carbon monoxide and water

“…Table I shows the conversion results of nitrobenzene on the various kinds of catalysts. The order of activity for hydrogenation is Fe/Al » Mo03(17)/A1 > CoO(20)/Al > W03(15)/A1 and this order is consistent with that for the WGSR (Takemura et al, 1981). Therefore, in this work only a series of alumina-supported iron oxide catalysts were examined in detail, aiming at the development for the catalyst being active and less costly.…”

“…These catalysts are designated by Mo03-(17)/Al, W03(15)/A1, and CoO(20)/Al, respectively, where the figures in the parentheses are mole percentage of each metal oxide in the catalyst. The preparation method of alumina used throughout in this work has been described previously (Takemura et al, 1981). The surface areas of the catalysts and their related substances were determined by the BET method using nitrogen at 77 K. Nitrobenzene was high-purity grade commercially available reagent and was purified by single distillation before use.…”

“…For the purpose of finding a catalyst suitable for the hydrogenation and hydrogenolysis process by the use of CO and H20, we (Takemura et al, 1981) have performed hydrogenolysis of diphenylmethane on the various catalysts. Through this work, alumina-supported molybdenum oxide catalyst was found to be most effective.…”

Catalytic decarboxylation of benzoic acid

“…Catalysts examined in this study are classified into three groups: as group I, metal oxides supported on alumina, such as WO3( 20), where the figure in parentheses denotes weight percent of metal oxide in the form of W03: as group II, alumina-supported nickel and palladium catalysts; and as group III, Y zeolites, i.e., hydrogen Y type zeolite (HY) and cerium, lanthanum, and neodymium cation-exchanged Y type zeolites (CeHY, LaHY, and NdHY). The group I catalysts were prepared by procedures previously reported (Takemura et al, 1981). Alumina-supported palladium catalyst of group II was prepared as follows; 0.11 g of Pd(N03)2 was dissolved in 100 mL of water.…”

Naphthenic acid extraction and speciation from Doba crude oil using carbonate-based ionic liquids

“…Esterification using metal carboxylates [10] and oxides [11] or decarboxylation using zeolites [12] have been successful although high operating temperatures (300-400°C) are still required. Hydrotreating using transition metal oxides supported on alumina have also been successful but require a supply of hydrogen gas for the reaction [13].…”