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Synthesis of propylene carbonate from urea and propylene glycol over zinc oxide: A homogeneous reaction

College of Chemistry, Chemical Engineering and Materials Science, Zaozhuang University, Zaozhuang, 277160, P.R. China

Special Issues: Materials for Energy Technologies

In this work, several metal oxides and zinc salts were used to catalyze propylene carbonate (PC) synthesis from urea and propylene glycol (PG). According to the results of catalytic test and characterization, the catalytic pattern of ZnO was different from that of other metal oxides such as CaO, MgO and La2O3, but similar to that of zinc salts. In fact, the leaching of Zn species took place during reaction for ZnO. And ZnO was found to be the precursor of homogenous catalyst for reaction of urea and PG. Thus, the relationship between the amount of dissolved zinc species and the catalytic performance of employed ZnO was revealed. In addition, a possible reaction mechanism over ZnO was discussed based on the catalytic runs and the characterization of XRD, FTIR, and element analysis.
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Keywords 1,2-Propanediol; Propylene carbonate; Zinc oxide

Citation: Dengfeng Wang, Xuelan Zhang, Tingting Cheng, Jing Wu, Qijun Xue. Synthesis of propylene carbonate from urea and propylene glycol over zinc oxide: A homogeneous reaction. AIMS Energy, 2014, 2(4): 399-409. doi: 10.3934/energy.2014.4.399

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This article has been cited by

  • 1. Huy Nguyen-Phu, Chan-yi Park, Eun Woo Shin, Dual catalysis over ZnAl mixed oxides in the glycerolysis of urea: homogeneous and heterogeneous reaction routes, Applied Catalysis A: General, 2017, 10.1016/j.apcata.2017.12.018
  • 2. Li Hao, Jianpei Wang, Weihua Shen, Zhiqing Zhu, Yunjin Fang, Carbonylation of 1,2-propylene glycol with urea to propylene carbonate under the catalysis of Zn-Al oxide from the view of homogeneous catalysis, Molecular Catalysis, 2018, 452, 54, 10.1016/j.mcat.2018.03.020

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Copyright Info: 2014, Xuelan Zhang, Dengfeng Wang, et al., licensee AIMS Press. This is an open access article distributed under the terms of the Creative Commons Attribution Licese (http://creativecommons.org/licenses/by/4.0)

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