K
Keigo Kamata
Researcher at Tokyo Institute of Technology
Publications - 166
Citations - 7680
Keigo Kamata is an academic researcher from Tokyo Institute of Technology. The author has contributed to research in topics: Catalysis & Hydrogen peroxide. The author has an hindex of 45, co-authored 153 publications receiving 6648 citations. Previous affiliations of Keigo Kamata include University of Tokyo & National Presto Industries.
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Epoxidation of olefins with hydrogen peroxide catalyzed by polyoxometalates
TL;DR: In this article, a review of recent developments for the epoxidation of olefins with hydrogen peroxide catalyzed by polyoxometalates is presented, which can be classified into two groups according to the structural and mechanistic aspects: (i) catalyst precursors of peroxotungstate or peroxomolybdate species and (ii) oxidatively and hydrolytically stable transition-metal-substituted polyoxmetalates.
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Efficient Epoxidation of Olefins with ≥99% Selectivity and Use of Hydrogen Peroxide
TL;DR: The effectiveness of this catalyst is evidenced by ≥99% selectivity to epoxide, ≥ 99% efficiency of H2O2 utilization, high stereospecificity, and easy recovery of the catalyst from the homogeneous reaction mixture.
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Energy determination in the Akeno Giant Air Shower Array experiment
M. Takeda,Naoto Sakaki,K. Honda,M. Chikawa,Masaki Fukushima,Naoaki Hayashida,N. Inoue,Kenichi Kadota,Fumio Kakimoto,Keigo Kamata,S. Kawaguchi,S. Kawakami,Y. Kawasaki,N. Kawasumi,Ayman Mahrous,K. Mase,S. Mizobuchi,Y. Morizane,M. Nagano,H. Ohoka,S. Osone,M. Sasaki,M. Sasano,H. M. Shimizu,K. Shinozaki,Masahiro Teshima,R. Torii,I. Tsushima,Yukio Uchihori,Takashi Yamamoto,S. Yoshida,H. Yoshii +31 more
TL;DR: In this paper, the authors reevaluate the energy determination method used for AGASA events with respect to the lateral distribution of shower particles, their attenuation with zenith angle, shower front structure, delayed particles observed far from the core and other factors.
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Catalytic oxidation of hydrocarbons with hydrogen peroxide by vanadium-based polyoxometalates
Noritaka Mizuno,Keigo Kamata +1 more
TL;DR: In this article, a review summarizes recent developments for homogeneous and heterogeneous liquid-phase oxidation of hydrocarbons with H 2 O 2 catalyzed by vanadium complexes and vanadium-based polyoxometalates.
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Effect of MnO2 Crystal Structure on Aerobic Oxidation of 5-Hydroxymethylfurfural to 2,5-Furandicarboxylic Acid.
TL;DR: The successful synthesis of high-surface-area β-MnO2 significantly improves the catalytic activity for the aerobic oxidation of HMF to FDCA and is in good agreement with the DFT calculation results.