Synthesis of Toluene-2,4-Bisurea from 2,4-Toluene Diamine and Urea and the Reaction Kinetics

王娜; 耿艳楼; 安华良; 赵新强; 王延吉

doi:10.1016/S1004-9541(13)60557-1

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Synthesis of Toluene-2,4-Bisurea from 2,4-Toluene Diamine and Urea and the Reaction Kinetics

材料与产品工程 | Updated：2026-01-06

- Synthesis of Toluene-2,4-Bisurea from 2,4-Toluene Diamine and Urea and the Reaction Kinetics
- Chinese Journal of Chemical Engineering Vol. 21, Issue 8, Pages: 927-9321004-954160557-1(2013)
- Affiliations：
  
  Hebei Provincial Key Lab of Green Chemical Technology & High Efficient Energy Saving, Hebei University of Technology,Tianjin,China,300130
- Author bio：
- Funds：
- DOI：10.1016/S1004-9541(13)60557-1
  CLC：
- Published：2013
- Accepted：
Scan QR Code
WANG Na, GENG Yanlou, AN Hualiang, ZHAO Xinqiang, WANG Yanji. Synthesis of Toluene-2,4-Bisurea from 2,4-Toluene Diamine and Urea and the Reaction Kinetics[J]. Chin.J.Chem.Eng., 2013, 21(8): 927-932.
DOI：

WANG Na, GENG Yanlou, AN Hualiang, ZHAO Xinqiang, WANG Yanji. Synthesis of Toluene-2,4-Bisurea from 2,4-Toluene Diamine and Urea and the Reaction Kinetics[J]. Chin.J.Chem.Eng., 2013, 21(8): 927-932. DOI： 10.1016/S1004-9541(13)60557-1.

摘要

Abstract

Toluene-2

4-bisurea (TBU) is an important intermediate for urea route to dimethyl toluene-2

4-dicarbamate and the study on TBU synthesis via the reaction of 2

4-toluene diamine (TDA) and urea is of great significance. Firstly

thermodynamic analysis shows that the reaction is exothermic and a high equilibrium conversion of TDA is expected due to its large reaction equilibrium constant. Secondly

under the suitable reaction conditions

130℃

7 h

and molar ratio of TDA/zinc acetate/urea/sulfolane 1/0.05/3.5/10

TDA conversion is 54.3%

and TBU yield and selectivity are 39.8% and 73.3% respectively. Lastly

the synthesis of TBU is a 1st order reaction with respect to TDA and the reaction kinetics model is established. This work will provide useful information for commercializing the urea route to toluene-2

4-dicarbamate (TDC).

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