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Stable Organic Titanium Catalysts and Reactive Distillation Used for the Transesterification of Dimethyl Carbonate with Phenol |
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| Authors: | Weihua Shen Qing Ge Kaijie Gu Yingying Nie Linyu Jiao Zhiqing Zhu Yunjin Fang |
| Affiliation: | 1. East China University of Science and Technology, State Key Laboratory of Chemical Engineering, School of Chemical Engineering, 200237 Shanghai, China;2. Shaanxi Coal Chemical Industry Technology Research Institute Co., Ltd., Shaanxi Coal Chemical Building, 2, Jinye Road, Xi'an Hi-tech Development Zone, 710070 Shaanxi Province, China;3. Northwest University, School of Chemical Engineering, No. 229 Taibai North Road, 710069 Xi'an, China |
| Abstract: | The transesterification of dimethyl carbonate with phenol to methyl phenyl carbonate (MPC) was investigated on novel catalysts such as titanium diisopropoxide bis(ethyl acetoacetate) and titanium dibutoxide bis(ethyl acetoacetate) in a closed batch reactor at 185–206 °C under high pressure. The produced methanol could be removed efficiently by reactive distillation in order to overcome the equilibrium. The prepared catalysts have higher resistance to water than titanium alkoxides. Phenol conversion as high as 86.4 % with an MPC selectivity of 99.4 % was achieved under optimal reaction conditions within 9 h. Most of the catalytic activity was retained after repeated use for ten times. |
| Keywords: | Dimethyl carbonate Methyl phenyl carbonate Reactive distillation Titanium chelate Transesterification |