Direct synthesis of diphenyl carbonate with heterogeneous catalyst and optimal synthesis conditions of the support prepared by sol-gel method

作者：Guo Hongxia; Chen Hongping; Liang Yinghua^*; Rui Yulan; Lue Jingde; Fu Zhanda

来源：Chinese Journal of Chemical Engineering, 2008, 16(2): 223-227.

DOI：10.1016/S1004-9541(08)60067-1

• diphenyl carbonate
• heterogeneous catalyst
• sol-gel method
• optimum condition

The support of catalyst for the direct synthesis of diphenyl carbonate (DPC) by heterogeneous catalytic reaction was prepared by the sol-gel method. Compared with activated charcoal, molecular sieve, porous ceramics, hopcalite, the support prepared by the sol-gel method has higher activity. The characterization of the support by X-ray diffraction (XRD) and transmission electron microscope (TEM) show that the main crystal phase is Co2MnO4 and the average particle diameter is about 40 nm. The optimum conditions for synthesis of the support were determined by orthogonal experiments, which indicate that the proportion of Cu, Mn, and Co is the first important factor influencing the yield and selectivity of DPC. Temperature of calcination is the second one. The optimum conditions are: molar proportion of Cu, Mn, and Co being 1 : 1 : 1, temperature of calcination 700 degrees C, drying at 100 degrees C, temperature of water bath 85 degrees C. The yield and selectivity of DPC in the process can reach 38% and 99% in the batch operation, respectively. The copper cobalt manganese mixed oxides chosen as the support contribute more to the high catalytic activity than the sol-gel method.

• 出版日期2008-4
• 单位华北理工大学