Efficient Epoxidation of Olefins with ≥99% Selectivity and Use of Hydrogen Peroxide
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- Keigo Kamata
- Department of Applied Chemistry, School of Engineering, University of Tokyo, 7-3-1 Hongo, Bunkyoku, Tokyo 113-8656, Japan.
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- Koji Yonehara
- Department of Applied Chemistry, School of Engineering, University of Tokyo, 7-3-1 Hongo, Bunkyoku, Tokyo 113-8656, Japan.
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- Yasutaka Sumida
- Department of Applied Chemistry, School of Engineering, University of Tokyo, 7-3-1 Hongo, Bunkyoku, Tokyo 113-8656, Japan.
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- Kazuya Yamaguchi
- Department of Applied Chemistry, School of Engineering, University of Tokyo, 7-3-1 Hongo, Bunkyoku, Tokyo 113-8656, Japan.
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- Shiro Hikichi
- Department of Applied Chemistry, School of Engineering, University of Tokyo, 7-3-1 Hongo, Bunkyoku, Tokyo 113-8656, Japan.
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- Noritaka Mizuno
- Department of Applied Chemistry, School of Engineering, University of Tokyo, 7-3-1 Hongo, Bunkyoku, Tokyo 113-8656, Japan.
書誌事項
- 公開日
- 2003-05-09
- DOI
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- 10.1126/science.1083176
- 10.1002/chin.200334036
- 公開者
- American Association for the Advancement of Science (AAAS)
この論文をさがす
説明
<jats:p> Epoxides are an important class of industrial chemicals that have been used as chemical intermediates. Catalytic epoxidation of olefins affords an interesting production technology. We found a widely usable green route to the production of epoxides: A silicotungstate compound, [γ-SiW <jats:sub>10</jats:sub> O <jats:sub>34</jats:sub> (H <jats:sub>2</jats:sub> O) <jats:sub>2</jats:sub> ] <jats:sup>4–</jats:sup> , is synthesized by protonation of a divacant, lacunary, Keggin-type polyoxometalate of [γ-SiW <jats:sub>10</jats:sub> O <jats:sub>36</jats:sub> ] <jats:sup>8–</jats:sup> and exhibits high catalytic performance for the epoxidation of various olefins, including propylene, with a hydrogen peroxide (H <jats:sub>2</jats:sub> O <jats:sub>2</jats:sub> ) oxidant at 305 kelvin. The effectiveness of this catalyst is evidenced by ≥99% selectivity to epoxide, ≥99% efficiency of H <jats:sub>2</jats:sub> O <jats:sub>2</jats:sub> utilization, high stereospecificity, and easy recovery of the catalyst from the homogeneous reaction mixture. </jats:p>
収録刊行物
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- Science
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Science 300 (5621), 964-966, 2003-05-09
American Association for the Advancement of Science (AAAS)
