Search Results - "KAMATA, Keigo"

Effect of MnO2 Crystal Structure on Aerobic Oxidation of 5‑Hydroxymethylfurfural to 2,5-Furandicarboxylic Acid by Hayashi, Eri, Yamaguchi, Yui, Kamata, Keigo, Tsunoda, Naoki, Kumagai, Yu, Oba, Fumiyasu, Hara, Michikazu

“…Aerobic oxidation of 5-hydroxymethylfurfural (HMF) to 2,5-furandicarboxylic acid (FDCA) as a bioplastics monomer is efficiently promoted by a simple system…”
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Perovskite Oxide Catalysts for Liquid-Phase Organic Reactions by Kamata, Keigo

“…The catalytic function of perovskite oxides has received significant attention because of their structural flexibility and controllable physicochemical…”
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A Bifunctional Tungstate Catalyst for Chemical Fixation of CO2 at Atmospheric Pressure by Kimura, Toshihiro, Kamata, Keigo, Mizuno, Noritaka

“…No pressure: A simple monomeric tungstate, [WO4]2−, serves as a highly efficient homogeneous catalyst for various transformations of CO2 at atmospheric…”
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Electronic Effect of Ruthenium Nanoparticles on Efficient Reductive Amination of Carbonyl Compounds by Komanoya, Tasuku, Kinemura, Takashi, Kita, Yusuke, Kamata, Keigo, Hara, Michikazu

“…Highly selective synthesis of primary amines over heterogeneous catalysts is still a challenge for the chemical industry. Ruthenium nanoparticles supported on…”
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A bifunctional cerium phosphate catalyst for chemoselective acetalization by Kanai, Shunsuke, Nagahara, Ippei, Kita, Yusuke, Kamata, Keigo, Hara, Michikazu

“…Acid-base solid catalysts synthesized with structurally controlled uniform active sites can lead to unique catalysis. In this study, a CePO catalyst was…”
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A high performance catalyst of shape-specific ruthenium nanoparticles for production of primary amines by reductive amination of carbonyl compounds by Chandra, Debraj, Inoue, Yasunori, Sasase, Masato, Kitano, Masaaki, Bhaumik, Asim, Kamata, Keigo, Hosono, Hideo, Hara, Michikazu

“…The creation of metal catalysts with highly active surfaces is pivotal to meeting the strong economic demand of the chemical industry. Specific flat-shaped…”
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Synthesis and Aerobic Oxidation Catalysis of Mesoporous Todorokite-Type Manganese Oxide Nanoparticles by Crystallization of Precursors by Koutani, Maki, Hayashi, Eri, Kamata, Keigo, Hara, Michikazu

“…The pursuit of a high surface area while maintaining high catalytic performance remains a challenge due to a trade-off relationship between these two features…”
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Dioxygen Activation by a Hexagonal SrMnO3 Perovskite Catalyst for Aerobic Liquid-Phase Oxidation by Kawasaki, Shuma, Kamata, Keigo, Hara, Michikazu

“…Heterogeneous catalysts, which allow a reductive activation of dioxygen (O2) under mild reaction conditions, are promising candidates for highly efficient…”
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Effects of ruthenium hydride species on primary amine synthesis by direct amination of alcohols over a heterogeneous Ru catalyst by Kita, Yusuke, Kuwabara, Midori, Yamadera, Satoshi, Kamata, Keigo, Hara, Michikazu

“…Heterogeneously catalysed synthesis of primary amines by direct amination of alcohols with ammonia has long been an elusive goal. In contrast to reported…”
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Electronic Effect in a Ruthenium Catalyst Designed in Nanoporous N‑Functionalized Carbon for Efficient Hydrogenation of Heteroarenes by Chandra, Debraj, Saini, Shikha, Bhattacharya, Saswata, Bhaumik, Asim, Kamata, Keigo, Hara, Michikazu

“…Active metal catalysts are the key in chemical industry for sustainable production of multitude of chemical resources. Here, we report a new ruthenium (Ru)…”
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Recent progress in the development of solid catalysts for biomass conversion into high value-added chemicals by Hara, Michikazu, Nakajima, Kiyotaka, Kamata, Keigo

“…In recent decades, the substitution of non-renewable fossil resources by renewable biomass as a sustainable feedstock has been extensively investigated for the…”
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Design of Highly Functionalized Polyoxometalate-Based Catalysts by Kamata, Keigo

“…Chemical industries leave much room for improvement in the areas of environmental conservation and resource utilization efficiency. The development of superior…”
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1,3-Dipolar Cycloaddition of Organic Azides to Alkynes by a Dicopper-Substituted Silicotungstate by Kamata, Keigo, Nakagawa, Yoshinao, Yamaguchi, Kazuya, Mizuno, Noritaka

“…The dicopper-substituted γ-Keggin silicotungstate TBA4[γ-H2SiW10O36Cu2(μ-1,1-N3)2] (I, TBA = tetra-n-butylammonium) could act as an efficient precatalyst for…”
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Strategic Design and Refinement of Lewis Acid–Base Catalysis by Rare-Earth-Metal-Containing Polyoxometalates by Suzuki, Kosuke, Sugawa, Midori, Kikukawa, Yuji, Kamata, Keigo, Yamaguchi, Kazuya, Mizuno, Noritaka

“…Efficient polyoxometalate (POM)-based Lewis acid–base catalysts of the rare-earth-metal-containing POMs (TBA6RE-POM, RE = Y3+, Nd3+, Eu3+, Gd3+, Tb3+, or Dy3+)…”
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Base Catalysis by Mono- and Polyoxometalates by Keigo Kamata, Kosei Sugahara

“…In sharp contrast with acid-, photo-, and oxidation-catalysis by polyoxometalates, base catalysis by polyoxometalates has scarcely been investigated. The use…”
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Green Oxidation Reactions by Polyoxometalate-Based Catalysts: From Molecular to Solid Catalysts by Mizuno, Noritaka, Kamata, Keigo, Yamaguchi, Kazuya

“…This article summarizes our recent developments for H 2 O 2 - and O 2 -based green oxidation reactions by polyoxometalates (POMs) and related compounds…”
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Efficient Oxidative Alkyne Homocoupling Catalyzed by a Monomeric Dicopper-Substituted Silicotungstate by Kamata, Keigo, Yamaguchi, Syuhei, Kotani, Miyuki, Yamaguchi, Kazuya, Mizuno, Noritaka

“…It goes on the dicopper core! A monomeric γ‐Keggin silicotungstate with a dicopper core that is bridged by two μ‐1,1‐azido ligands catalyzes oxidative alkyne…”
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An efficient H2O2-based oxidative bromination of alkenes, alkynes, and aromatics by a divanadium-substituted phosphotungstate by Yonehara, Kazuhiro, Kamata, Keigo, Yamaguchi, Kazuya, Mizuno, Noritaka

“…A divanadium-substituted phosphotungstate TBA(4)[γ-HPV(2)W(10)O(40)] (TBA = tetra-n-butylammonium) could act as an effective homogeneous catalyst for the…”
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Preparation of Mesoporous Basic Oxides through Assembly of Monodispersed Mg–Al Layered Double Hydroxide Nanoparticles by Oka, Yuya, Kuroda, Yoshiyuki, Matsuno, Takamichi, Kamata, Keigo, Wada, Hiroaki, Shimojima, Atsushi, Kuroda, Kazuyuki

“…Mesoporous basic Mg–Al mixed metal oxides (MMOs) with a high surface area and large pore size have been prepared through the assembly of monodispersed layered…”
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Scope of chemical fixation of carbon dioxide catalyzed by a bifunctional monomeric tungstate by KAMATA, Keigo, KIMURA, Toshihiro, SUNABA, Hanako, MIZUNO, Noritaka

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