Abstract
A series of silica coated magnetic nanoparticles supported ILs were prepared, characterized and their catalytic performances in cycloaddition of CO2 to epoxides were investigated. The influences of various reaction parameters including catalyst selection, catalyst amount, reaction time, and reaction temperature were studied. Research shows that TiCl5-DMIL@SiO2@Fe3O4 could be used as the highest efficient catalyst in cycloaddition of CO2 and epoxides to gives the corresponding cyclic carbonates. Good to excellent yields were achieved for this reaction under mild conditions. The heterogeneous supported catalyst is easily recoverable by filtration, and could be used for five consecutive runs without significant loss in catalytic activity.
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