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Synthesis of Propylene Carbonate Catalyzed by Copper-containing Hydrotalcite-like Compounds

Published online by Cambridge University Press:  01 February 2011

Xianmei Xie ,
Lian Duan ,
Zhenghuang Wu ,
Lina Wang ,
Kai Yan  and
Lei Du
Xianmei Xie*
Affiliation:
College of Chemistry and Chemical Engineering, Taiyuan University of Technology, Taiyuan 030024, PR China
Lian Duan
Affiliation:
College of Chemistry and Chemical Engineering, Taiyuan University of Technology, Taiyuan 030024, PR China
Zhenghuang Wu
Affiliation:
College of Chemistry and Chemical Engineering, Taiyuan University of Technology, Taiyuan 030024, PR China
Lina Wang
Affiliation:
College of Chemistry and Chemical Engineering, Taiyuan University of Technology, Taiyuan 030024, PR China
Kai Yan
Affiliation:
College of Chemistry and Chemical Engineering, Taiyuan University of Technology, Taiyuan 030024, PR China
Lei Du
Affiliation:
College of Chemistry and Chemical Engineering, Taiyuan University of Technology, Taiyuan 030024, PR China
*
*Corresponding author. Tel: (0351)6018564; Fax: (0351)6018564; E-mail: [email protected]
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Abstract

CuFe-Hydrotalcite-Like Compounds (CuFe-HTLcs) were synthesized by coprecipitation with Cu(NO3)2·6H2O, Fe(NO3)3·9H2O, NaOH and Na2CO3 solution. The sample with Cu2+ / Fe3+ = 2 was of the highest crystalline characterized by XRD and particle size distribution. The synthesis of propylene carbonate from 1,2-propanediol (PG) and urea was performed to evaluate the catalytic activities of the CuFe-HTLcs. The effects of reaction time, temperature, dosage of catalyst on the synthesis of propylene carbonate were fully discussed. The optimal reaction conditions were determined by using orthogonal test design: reaction temperature 170 °C, dosage of catalyst 0.2 g, and molar ratio of PG to urea 2:1, reaction time 3 h. Under the optimal conditions, the conversion of urea nearly reached 100 %, and the selectivity of propylene carbonate was up to 90.4%.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 1279: New Catalytic Materials , 2010 , 24
Copyright
Copyright © Materials Research Society 2010

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