Citation: Zhi Wen Gao, Shou Feng Wang, Chun Gu Xia. Synthesis of propylene carbonate from urea and 1,2-propanediol[J]. Chinese Chemical Letters, ;2009, 20(2): 131-135. doi: 10.1016/j.cclet.2008.10.038 shu

Synthesis of propylene carbonate from urea and 1,2-propanediol

a State Key Laboratory for Oxo Synthesis and Seletive Oxidation, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou 73000, China;
b Graduate School of the Chinese Academy of Sciences, Beijing 100039, China

Received Date: 11 June 2008

Fund Project: This work was financially supported by the National Natural Science Fund for Distinguished Young Scholars of China (No. 20625308).

The production of propylene carbonate (PC) from urea and 1,2-propanediol (PG) was investigated in a batch process. The catalytic performances of zinc chloride and magnesium chloride were investigated for this reaction system. The influences of various operation conditions on the PC yield were explored. In this work, MgCl₂ and ZnCl₂ showed the excellent catalytic activity toward PC synthesis, and the yields of propylene carbonate reached 96.5% and 92.4%, respectively. The optimum reaction conditions were as follows: ethanol/urea molar ratio of 4, catalyst concentration of 1.5%, reaction temperature of 160℃, reaction time of 3 h, respectively. The route from urea and 1,2-propanediol shows advantages, such as mild reaction condition and safe operation. The catalytic system is environmentally benign.
- Urea,
- 1,
- 2-Propanediol,
- Propylene carbonate
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