天然气化工2017，Vol.42Issue(4)：40-45,6.
二甲胺与乙酸(乙酸酐)反应的热力学分析
Thermodynamics of the reactions of dimethylamine with acetic acid or acetic anhydride
汤健 1朱志华1
作者信息
- 1. 华东理工大学 化工学院,上海 200237
- 折叠
摘要
Abstract
The fundamental thermodynamic data of the substances in the reactions of dimethylamine with acetic acid or acetic anhydride were calculated by Benson group contribution method and Waston empirical formula. The reaction enthalpy, Gibbs free energy change and equilibrium constant of the main reactions were calculated. The results show that the enthalpy changes of both reacions are negative at 20-160℃, indicating that both reactions are exothermic; with the increase of reaction temperature, the heat release will decrease gradually; the Gibbs free energy changes of both reactions are negative, meaning that both reaction can occur spontaneously; and the equilibrium constants of both reactions decreases with the increase of reaction temperature, and they are pretty large at 20-40℃, which is suitable for the reaction.关键词
N,N-二甲基乙酰胺/合成反应/基团贡献法/热力学/乙酸/乙酸酐Key words
N/N-dimethylacetamide/synthesis reaction/group-contribution method/thermodynamics/acetic acid/acetic anhydride分类
化学化工引用本文复制引用
汤健,朱志华..二甲胺与乙酸(乙酸酐)反应的热力学分析[J].天然气化工,2017,42(4):40-45,6.
