Peroxometalates immobilized on magnetically recoverable catalysts for epoxidation

…, L Hua, L Orzechowski, K Yan, B Feng, Z Pan…

Index: Qiao, Yunxiang; Li, Huan; Hua, Li; Orzechowski, Lars; Yan, Kai; Feng, Bo; Pan, Zhenyan; Theyssen, Nils; Leitner, Walter; Hou, Zhenshan ChemPlusChem, 2012 , vol. 77, # 12 p. 1128 - 1138

Full Text: HTML

Citation Number: 23

Abstract

Abstract Magnetically separable catalysts were prepared and employed for the epoxidation of olefins with hydrogen peroxide. In all cases the magnetic core was firstly covered with a silica layer to prevent iron ion-initiated decomposition of hydrogen peroxide. The catalytic active species, an ionic liquid-type peroxotungstate, was then immobilized either by hydrogen bonding (catalyst 1) or by covalent Si [BOND] O linkage (catalyst 2). In addition ...