IEC 17 |
| Xinbin Ma, Jinlong Gong, Shengping Wang, Hongli Guo, and Genhui Xu. State Key Laboratory of C1 Chemistry and Technology,School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, China |
| The transesterification of dimethyl oxalate (DMO) with phenol to prepare diphenyl oxalate (DPO), followed by the decarbonylation of DPO to produce diphenyl carbonate, is a green chemistry route. DPO was prepared by the transesterification of DMO with phenol over TiO2 supported catalysts. The support had an important effect on the selectivities of products. SiO2 was found to be the best support with respect to the excellent total selectivity for methyl phenyl oxalate and DPO. TiO2/SiO2 showed the highest activity and selectivity for the transesterification among the oxide catalysts. The yields of methyl phenyl oxalate and DPO were 46.5% and 10.0%, respectively, while only trace amount of anisole was observed as byproduct. The catalytic activities of TiO2 supported catalysts were improved sharply by the dispersivity of Ti active centers compared with TiO2. The strong sites of acid and base were in favor of the formation of byproduct anisole. |
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Green Chemistry in the Design of Alternative Energy Strategies (sponsored by Green Chemistry & Engineering Subdivision)
8:30 AM-12:05 PM, Sunday, March 23, 2003 Convention Center -- Room 394, Oral
Division of Industrial and Engineering Chemistry |