Takeru Onoda
Mitsubishi
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Featured researches published by Takeru Onoda.
Journal of Organometallic Chemistry | 1987
Yasuko Tomotake; Takao Matsuzaki; Kenji Murayama; Eiichi Watanabe; Keisuke Wada; Takeru Onoda
Two dimeric rhodium compounds, [Rh(CO) 3 P(c-C 5 H 9 ) 3 ] 2 ( 1 ) and [Rh)CO) 3 P(i-Pr) 3 ] 2 ( 2 ) have been isolated from the catalytic reaction mixtures of syngas conversion to ethylene glycol, and their molecular structures without a bridging carbonyl were determined by single crystal X-ray diffraction studies.
Journal of Organometallic Chemistry | 1971
Walter Strohmeier; R. Fleischmann; Takeru Onoda
Abstract Rectivity of the hydrogenation catalyst IrX(CO)L 2 depends on the ligands X. Reaction rate r is for X Cl
Journal of Organometallic Chemistry | 1989
Yoshinori Hara; Eiichi Watanabe; Keisuke Wada; Takeru Onoda
Br
Journal of The Chemical Society, Chemical Communications | 1986
Eiichi Watanabe; Kenji Murayama; Yoshinori Hara; Yoshimitsu Kobayashi; Keisuke Wada; Takeru Onoda
I. This rule does not depend on the type of the unsaturated compound St. Regarding the ligands L(PR 3 ) there is no relationship between π-acceptor strength of L in IrX(CO)L 2 and reaction rate r of the catalyst.
Journal of Organometallic Chemistry | 1988
Eiichi Watanabe; Yasuyo Shimada; Keisuke Wada; Takeru Onoda
Abstract In the rhodium/alkylphosphine complex catalyzed hydrogenation of carbon monoxide, the reaction rate and the selectivity to ethylene glycol have been found to be much improved by the addition of nitrogen bases. Examination of the effects of a variety of nitrogen bases for Rh/P-i-Pr3 and Rh/P-n-Bu3 catalyst systems revealed the linear relationships between rate (to ethylene glycol and methanol) and pKa value of the nitrogen base. Use of these catalysts, allowed a space time yield of 280 g/l·h and a selectivity of ethylene glycol of 76% to be achieved.
Studies in Surface Science and Catalysis | 1981
Masayuki Otake; Takeru Onoda
Syngas treatment of Rh4(CO)12 in 1-methylpyrrolidin-2-one gives a colourless solution of mononuclear tetracarbonylrhodate, Rh(CO)4–, which is closely related to the active catalytic species that produces ethylene glycol.
Journal of Catalysis | 1975
Masayuki Otake; Takeru Onoda
Abstract The single RhRh bond, in the dimeric rhodium(0) complex [Rh(CO) 3 P-i-Pr 3 ] 2 , has been found to undergo facile homonuclear disproportionation which in the presence of a nitrogen base, e.g. triazole, imidazole or 4-aminopyridine, gives the homonuclear ion pair, [Rh(CO)(P-i-Pr 3 ) 2 (B)] + [Rh(CO) 4 ] − .
Archive | 1977
Takeru Onoda; Masayuki Otake
A new synthetic route to MMA from isobutyraldehyde is now planned commercialization. This process is characterized in its unique source material, isobutyraldehyde. Another point to be stressed is the use of the heteropoly acid catalyst for the oxidative dehydrogenation of the intermediate isobutyric acid to methacrylic acid. The characteristic of this proprietary MCI catalyst is summarized. The outlines of the MCI (Mitsubishi Chemical Industries Ltd.) process are described.
Archive | 1974
Akihisa Ohno; Naoatsu Ishizaki; Akira Yamura; Takeru Onoda; Junzo Haji; Masato Sato; Jun Toriya
Archive | 1975
Takeru Onoda; Masayuki Otake