Citation:
LIU Chunyan, XIAO Benneng. Ordered Mesoporous Carbon CMK-3 Immobilized with Ionic Liquids as Efficient Catalysts for the Synthesis of Cyclic Carbonates from CO2 and Epoxides[J]. Chinese Journal of Applied Chemistry,
;2014, 31(4): 406-410.
doi:
10.3724/SP.J.1095.2014.30305
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CMK-3-IL heterogeneous catalysts were synthesized using ordered mesoporous carbons CMK-3 as the support to immobilize imidazoles ionic liquids and applied to the synthesis of cyclic carbonate.The catalyst samples were characterized by X-ray powder diffraction(XRD),nitrogen adsorption-desorption,transmission electron microscopy(TEM),thermogravimetric analysis(TGA) and elemental analysis.The results show that the ionic liquids are grafted on the surface of the CMK-3 and the resultant hybrid materials retains mesoporous structure after immobilization.The nitrogen adsorption results indicate that pore volume,pore diameter and surface area of CMK-3-IL are slightly reduced.CMK-3-IL shows much higher catalytic activity.A 64% conversion of propylene oxide and a 99% selectivity of propylene carbonate can be achieved when the catalytic reaction is carried out at 120℃ under 2 MPa for 6 h.
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