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  • Catalytic Beckmann rearrangement of ketoximes in ionic liquids
  • 更新时间:2014-04-05;信息类型:SCI论文
  • Under mild conditions and without any additional organic solvents, Beckmann rearrangements of several ketoximes were performed in the catalytic media consisting of room temperature ionic liquid based on 1,3-dialkylimidazolium or alkylpyridinium salts and phosphorated compounds. Excellent conversion and selectivity was achieved for cyclohexanone oxime as the substrate, while Beckmann fragmentation of cyclopentanone oxime was observed.
  • 链接地址:http://www.ionicliquid.org/download/article/2014-04-05/12.html
  • Cycloaddition of carbon dioxide to propylene oxide catalyzed by ionic liquids
  • 更新时间:2014-04-05;信息类型:SCI论文
  • In room temperature ionic liquids based on 1-n-butyl-3-methylimidazolium and n-butylpyridinium salts, cycloaddition of carbon dioxide to propylene oxide without any additional organic solvents has been investigated. It was found that 1-n-butyl-3-methylimidazolium tetraÑuoroborate was the most active catalyst with almost 100% selectivity, and a suitable CO oxide molar ratio was needed for high conversion. The ionic liquid used 2Èpropylene as catalyst for the reaction was recyclable.
  • 链接地址:http://www.ionicliquid.org/download/article/2014-04-05/10.html
  • Au–Pt/Co3O4 catalyst for methane combustion
  • 更新时间:2014-04-05;信息类型:SCI论文
  • The catalytic activity of Au/Co3O4 (Au loading was 2–5 wt.%) towards methane combustion could be enhanced when small amount of Pt, e.g. 0.2 wt.% was added, and the temperature for 100% conversion of methane could be decreased by 50◦C. Palladium, which was the most active single metal catalyst for methane combustion, on the other hand, exhibited lower catalytic activity than Au–Pt/Co3O4 when combined with Au over the Co3O4 support.
  • 链接地址:http://www.ionicliquid.org/download/article/2014-04-05/9.html