高等学校化学学报

高等学校化学学报 ›› 1993, Vol. 14 ›› Issue (3): 297.

• 研究论文 •    下一篇

α-和β-Cs4H3[SiW9O37Cr3(H2O)3]·xH2O的合成及其催化PhIO环氧化烯烃的性质

刘景福, 赵本良, 李金昶, 徐桂英, 朱志平   

  1. 东北师范大学化学系, 长春 130024
  • 收稿日期:1992-05-20 修回日期:1992-09-28 出版日期:1993-03-24 发布日期:1993-03-24
  • 通讯作者: 刘景福
  • 基金资助:

    国家自然科学基金

Synthesis of α- and β-Cs4H3[SiW3O37Cr3(H2O)3]·xH2O and Their Catalysis of Epoxidation of Olefin by PhIO

LIU Jing-Fu, ZHAO Ben-Liang, LI Jin-Chang, XU Gui-Ying, ZHU Zhi-Ping   

  1. Department of Chemistry, Northeast Normal University, Changchun, 130024
  • Received:1992-05-20 Revised:1992-09-28 Online:1993-03-24 Published:1993-03-24

PDF (PC)

摘要： 本文报道了α-和β-[SiW9O37Cr3(H2O)3]7-杂多阴离子铯、钾盐的合成、表征及其催化亚碘酰苯环氧化烯烃的性质.元素分析、磁化率、红外光谱及FAB质谱等数据表明,该杂多阴离子为三取代的Keggin结构.α-和β-[siW9O37aCr3(H2O)3]7-具有催化PhIO环氧化反-二苯乙烯、环己烯和苯乙烯生成相应环氧化物的性质。

关键词: 九钨三铬硅酸盐, 三取代Kcgsln杂多阴离子, 烯烃环氧化反应

Abstract: The synthesis of α- and β-Cs<H3[SiW9O37Cr3(H2O)3] β xH2Oand their catalysis for epoxi-dation of olefin are reported.The heteropolyacid salts have an ability to catalyze the epoxidation of olefin by PhIO, and the catalytic activity of them is probably related to the fact that the substituted Cr ( Ⅲ ) can be oxidized to a higher oxidation state and the compound with a higher oxidation state has an oxidation property.

Key words: Trichromononatungstosilicate, Trisubstituted keggin heteropolyanion, Epoxidation of olefin

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