Shoichiro Mori

Role of urania as a promoter of supported rhodium in the catalyzed steam dealkylation of toluene

The steam dealkylation of toluene was studied using platinum group catalysts with and without urania, and the results were tabulated. The Rh-Al/sub 2/O/sub 3/ catalyst promoted by urania proved to be the most effective catalyst. The effect of CO on the steam dealkylation for Rh catalyst and for Rh-UO/sub 3/ catalyst was reported. The three step role of urania was described. (DDA)

Electrochemical properties of quaternary ammonium borodiglycolates and borodioxalates

Abstract Quaternary ammonium borodiglycolates and borodioxalates were prepared by the reaction of quaternary ammonium tetrahydroxyborates with glycolic acid and oxalic acid, respectively. These compounds are used as the electrolyte salts of aluminum electrolytic capacitors. Their molar conductivities, limiting molar conductivities and oxidation potentials in γ-butyrolactone were higher than those of borodisalicylates and borodicatecholates due to the lack of aromatic rings. Their film-forming ability of anodic aluminum oxide in γ-butyrolactone electrolytes containing a small amount of water was poor, because both anodic dissolution and oxidation occurred simultaneously.

Hydrogenation of carbon monoxide by ruthenium catalysts: a synergistic effect of chloride salts and weak acids

Abstract Hydrogenation of carbon monoxide by a Ru—PPNCl—acid system was examined. A synergistic effect was observed for a combination of halide salts and weak acids. Ethylene glycol, methanol and ethanol are the major products. Mechanistic studies suggest that a single catalytic species, presumably the hydroxymethyl-metal intermediate, is responsible for a major part of the ethylene glycol and methanol. Positive effects of moderately polar solvents and weak acids indicate the ion-paired nature of the catalytic species.

A new gelling agent and its application as a solid electrolyte for lithium batteries

Abstract A new gelling agent 1,3:2,4-di( p -methoxycarbonylbenzylidene)sorbitol was used to immobilize liquid electrolytes for lithium batteries. The liquid electrolytes were solidified without a significant decrease in conductivity. The mechanical strength of a gelled electrolyte comprising poly(ethylene oxide)-grafted poly(methacrylate) and the liquid electrolyte was remarkably enhanced without a conductivity decrease.

Promoting effect of acids on the formation of ethylene glycol from synthesis gas catalyzed by the rhodium-tricyclohexylphosphine system

Abstract Carboxylic acids, pentafluorophenol and phosphoric acid (HX) facilitate the formation of ethylene glycol from synthesis gas catalyzed by the rhodium-tricyclohexylphosphine (TCP) system. Complexes recovered from the resultant solutions were identified as RhX(CO)(TCP) 2 , which are stable to repeated use. The catalytically active species or its immediate precursor is proposed to be HRh(CO) 2 (TCP) 2 from IR spectroscopic analysis under synthesis gas pressure of 280 bar.