Catalytic performance of metal oxide modified SiMCM-41 catalysts in diphenyl carbonate synthesis |
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Authors: | K Su Z Li B Cheng Y Ren L Yu F Wang |
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Institution: | 1.College of Materials and Chemical Engineering, and Tianjin Key Laboratory of Fiber Modification and Functional Fiber,Tianjin Polytechnic University,Tianjin,China |
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Abstract: | Decomposition of CCl4 into diphenyl carbonate (DPC) was examined over metal oxides modified SiMCM-41. ZnO/SiMCM-41 and Fe2O3/SiMCM-41 showed high activity in DPC synthesis. Although many other metal oxides, such as La2O3, CuO, Al2O3 and alkali or alkaline earth oxide, were success in destruction of CCl4, they displayed nearly no activity on DPC synthesis. ZnO/SiMCM-41 and Fe2O3/SiMCM-41 were characterized by X-ray diffraction (XRD), UV-Raman, 29Si MAS NMR and N2 adsorption-desorption isotherms, and results showed that ferric and zinc oxide were supported onto SiMCM-41. The well ZnO
dispersion in SiMCM-41 channels and the weak electrostatic interaction between chlorine anion and Zn2+ play an important role for the high activity of ZnO/SiMCM-41 in decomposition of CCl4 into DPC. |
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