Advances of heterogeneous catalysts for the synthesis of diphenyl carbonate via transesterification with phenol

Diphenyl carbonate (DPC) is an important intermediate in chemistry industry.The synthesis of DPC via transesterification with phenol is a nonphosgene route instead of the conventional phosgene route,which includes the reactions of phenol with dimethyl carbonate (DMC) or with dimethyl oxalate (DMO).The principle and characteristic of these two transesterification reactions are discussed respectively.The development and corresponding characteristics of heterogeneous catalysts for the transesterification reactions are reviewed,including metal oxides,zeolites or hydrotlcite,and heteropolycation compounds.