Kazunari Takahashi | Researchain

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Featured researches published by Kazunari Takahashi.

Catalysis Surveys From Japan | 2002

A novel production of γ-butyrolactone catalyzed by homogeneous ruthenium complexes

Yoshinori Hara; Kazunari Takahashi

Abstractγ-Butyrolactone (hereafter abbreviated GBL) is produced by the two-stage hydrogenation of maleic anhydride(MAH) in the liquid phase: the hydrogenation of MAH to succinic anhydride(SAH) in the first stage and the subsequent hydrogenation of SAH to GBL in the second stage. A novel ruthenium catalyst system consisting of Ru salts, trialkylphosphine and p-toluene sulfonic acid (p-TsOH) was found very effective for the hydrogenation of SAH affording GBL, which exhibited excellent catalyst performance, exceeding 97% selectivity for GBL and high activity.

Organometallics | 2005

Dramatic Rate Acceleration by a Diphenyl-2-pyridylphosphine Ligand in the Hydration of Nitriles Catalyzed by Ru-(acac)~2 Complexes

Toshiyuki Oshiki; Hitoshi Yamashita; Kensuke Sawada; Masaru Utsunomiya; Kazunari Takahashi; Kazuhiko Takai

Journal of Catalysis | 2000

A novel production of γ-butyrolactone catalyzed by ruthenium complexes

Yoshinori Hara; Haruhiko Kusaka; Hiroko Inagaki; Kazunari Takahashi; Keisuke Wada

Archive | 2004

Signal processor and processing method of solid state image sensor and imaging apparatus

Manabu Hara; Hiromasa Ikeyama; Yoshiaki Nishide; Kazunari Takahashi; 裕政池山; 義章西出; 和成高橋

Archive | 1990

Process for producing a lactone

Chihiro Miyazawa; Kazunari Takahashi; Hiroshi Kameo; Shinji Isogai; Masayuki Otake

Archive | 1995

Process for preparing butyrolactone and method for separating organic phosphorous-ruthenium complex as catalyst and reusing the same

Hitoshi Sugiyama; Kazunari Takahashi; Haruhiko Kusaka

Archive | 2006

Process for production of aromatic compound and process for production of hydrogenated aromatic compound

Hiromichi Kuwana; 桑名弘通; Kazutaka Akai; 赤井一隆; Kazunari Takahashi; 高橋和成; Fumitaka Utsumi; 内海史尊

Archive | 2000

Pyrrolidone composition and method for producing the same

陽子 ▲勢▼藤; Hiroyuki Onoe; Yoko Seto; Kazunari Takahashi; Yoshiyuki Yokoyama; 浩之尾上; 佳幸横山; 和成高橋

Archive | 1993

Method of and apparatus for cleaning oil-deposited material and a cleaning agent used therefor

Makoto Ishikawa; Tetsuhiro Yamauchi; Kazunari Takahashi; Soichi Orita; Tetsuo Asanuma; Noboru Ueki; Masayuki Hattori; Satoshi Yamazaki

Archive | 2000

Gel-like particle-containing liquid soup composition and method for producing the same

Koshiro Hatakeyama; Kazunari Takahashi; Hiroyuki Ueda; Keiko Yamamoto; 恵子山本; 裕之植田; 晃子郎畠山; 和成高橋

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