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Title
Japanese:Efficient Epoxidation of Olefins with ≥99% Selectivity and Use of Hydrogen Peroxide. 
English:Efficient Epoxidation of Olefins with ≥99% Selectivity and Use of Hydrogen Peroxide. 
Author
Japanese: Keigo Kamata, Koji Yonehara, Yasutaka Sumida, Kazuya Yamaguchi, Shiro Hikichi, Noritaka. Mizuno.  
English: Keigo Kamata, Koji Yonehara, Yasutaka Sumida, Kazuya Yamaguchi, Shiro Hikichi, Noritaka. Mizuno.  
Language English 
Journal/Book name
Japanese:Science (Washington, DC, United States) 
English:Science (Washington, DC, United States) 
Volume, Number, Page Vol. 300    No. 5621    pp. 964-966
Published date 2003 
Publisher
Japanese:American Association for the Advancement of Science 
English:American Association for the Advancement of Science 
Conference name
Japanese: 
English: 
Conference site
Japanese: 
English: 
DOI https://doi.org/10.1126/science.1083176
Abstract Epoxides are an important class of industrial chems. that have been used as chem. intermediates. Catalytic epoxidn. of olefins affords an interesting prodn. technol. We found a widely usable green route to the prodn. of epoxides: A silicotungstate compd., [ﾎｳ-SiW10O34(H2O)2]4-, is synthesized by protonation of a divacant, lacunary, Keggin-type polyoxometalate of [ﾎｳ-SiW10O36]8- and exhibits high catalytic performance for the epoxidn. of various olefins, including propylene, with a hydrogen peroxide (H2O2) oxidant at 305 K. The effectiveness of this catalyst is evidenced by 竕･99% selectivity to epoxide, 竕･99% efficiency of H2O2 utilization, high stereospecificity, and easy recovery of the catalyst from the homogeneous reaction mixt. [on SciFinder(R)]

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