高等学校化学学报

高等学校化学学报 ›› 2011, Vol. 32 ›› Issue (5): 1106.

• 研究论文 • 上一篇    下一篇

二苯甲烷二氨基甲酸甲酯热分解制备二苯甲烷二异氰酸酯的表观动力学研究

张琴花1,2, 李会泉1, 柳海涛1, 裴义霞1,2   

  1. 1. 中国科学院过程工程研究所绿色过程工程实验室, 湿法冶金清洁生产技术国家工程研究中心, 北京 100190;
    2. 中国科学院研究生院, 北京 100049
  • 收稿日期:2010-12-28 修回日期:2011-02-25 出版日期:2011-05-10 发布日期:2011-04-11
  • 通讯作者: 李会泉 E-mail:hqli@home.ipe.ac.cn
  • 基金资助:

    国家科技支撑重大项目课题(批准号: 2006BAC02A08)和中科院知识创新工程课题(批准号: KGCX2-YW-215-2)资助.

Observed Kinetics Study of Methylene Diphenyl Dicarbamate Thermo-decomposition to Diphenylmethane Diisocyanate

ZHANG Qin-Hua1,2, LI Hui-Quan1*, LIU Hai-Tao1,  PEI Yi-Xia1,2   

  1. 1. Key Laboratory of Green Process and Engineering, National Engineering Laboratory for Hydrometallurgical Cleaner Production Technology, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, China;
    2. Graduate University of Chinese Academy of Sciences, Beijing 100049, China
  • Received:2010-12-28 Revised:2011-02-25 Online:2011-05-10 Published:2011-04-11
  • Contact: LI Hui-Quan E-mail:hqli@home.ipe.ac.cn
  • Supported by:

    国家科技支撑重大项目课题(批准号: 2006BAC02A08)和中科院知识创新工程课题(批准号: KGCX2-YW-215-2)资助.

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被引次数

8

摘要： 在癸二酸二(2-乙基己基)酯溶剂中研究了二苯甲烷二氨基甲酸甲酯(MDC)的分解反应机理，建立了二苯甲烷二氨基甲酸甲酯的分解反应动力学模型。通过实验测定，并对不同温度下体系中各物质的浓度数据进行线性拟合得到反应速率方程。结果表明：MDC的热分解分为两个步骤，均为一级反应。两步反应的活化能分别为：138.82kJ/mol，167.78kJ/mol；指前因子分别为：1.51×1012min-1，5.33×1014min-1。

关键词: 二苯甲烷二氨基甲酸甲酯, 二苯甲烷二异氰酸酯, 动力学

Abstract: The observed kinetics study of Methylene diphenyl dicarbamate decomposition was investigated in the presence of diisooctyl sebacate. A consecutive reaction model was established by simplifying the decomposition process and the two steps were conformed to be the first-order by integral test model and numerical differential method, respectively. The results showed that the activation energies of the two steps are 138.82 kJ/mol and 167.78 kJ/mol, while the frequency factors are 1.51×1012 and 5.33×1014, respectively. Base on the obtained kinetic model, the reaction proceeding can be calculated in given conditions.

Key words: Methylene diphenyl dicarbamate, Methylene Diphenyl Diisocyanate, Observed Kinetics

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