Kinetics of the decomposition of dimethylhexane-1,6-dicarbamate to 1,6-hexamethylene diisocyanate

The kinetics of the decomposition of dimethylhexane-1,6-dicarbamate to 1,6-hexamethylene diisocyanate was studied. A consecutive reaction model was established and the reaction orders for the two steps were confirmed to be 1 and 1.3 by the integral test method and the numerical differential method,...

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Bibliographic Details
Published in:Chinese journal of chemical engineering 2015-05, Vol.23 (5), p.775-779
Main Authors: Cao, Yan, Li, Huiquan, Qin, Ningbo, Zhu, Ganyu
Format: Article
Language:English
Subjects:
1,6-Hexamethylene diisocyanate
Activation energy
Chemical engineering
Decomposition
Diisocyanates
Dimethylhexane-1,6-dicarbamate
Integrals
Kinetics
Mathematical models
Reaction kinetics
Test procedures
二甲基
六亚甲基二异氰酸酯
分解
动力学模型
反应模式
反应级数
数值微分法
氨基甲酸酯
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Summary:The kinetics of the decomposition of dimethylhexane-1,6-dicarbamate to 1,6-hexamethylene diisocyanate was studied. A consecutive reaction model was established and the reaction orders for the two steps were confirmed to be 1 and 1.3 by the integral test method and the numerical differential method, respectively. The activation energies of the two steps were （56.94 4±5.90） kJ·mol^-1 and （72.07±3.47） kJ·mol^-1 with the frequency factors exp（ 12.53±1.42） min^- 1 and （ 14.254±0.84） tool^-0.33. L^0.33·min^-1, respectively. Based on the kinetic model obtained, the progress of the reaction can be calculated under given conditions.
ISSN:1004-9541
2210-321X
DOI:10.1016/j.cjche.2014.12.008