二氧化碳、正丁胺和醇“一步法”合成氨基甲酸酯的热力学分析  

THERMODYNAMIC ANALYSIS OF SYNTHESIS OF CARBAMATES FROM CARBON DIOXIDE,1-BUTANAMINE AND ALCOHOLS

作　　者：孙大雷[1] 叶嘉辉 许立力[1] 方岩雄[1] 

机构地区：[1]广东工业大学轻工化工学院,广东广州510006

出　　处：《精细石油化工》2015年第4期44-49,共6页Speciality Petrochemicals

基　　金：国家自然科学青年基金(21206019);广东省科技计划(2013B010403026)

摘　　要：采用基团贡献法计算了CO2、正丁胺和醇“一步法”合成氨基甲酸酯复合反应体系的热力学参数。计算结果表明：在温度298~348K,该反应的吉布斯自由能ΔrG和反应摩尔焓变ΔrH均小于零,预示着该反应为可逆放热反应,且存在最佳反应温度。热力学计算结果与实验及文献结果相吻合,对实验室研究及工业化生产具有重要的指导意义。The synthesis of carbamates from carbon dioxide, amines and alcohols is a complex reaction system. The thermodynamic parameters of the reaction is calculated by methods of group contribution. The results showed that both change of Gibbs free energy and equilibrium constant of the reaction were less than zero, which indicated that the reaction is exothermic, and further,there is an optimum reaction temperature for the reaction. These results of calculating were also in agree with that from both the literature and experiment, which could be used to guide both the laboratory research and industrial production.

关 键 词：氨基甲酸酯 二氧化碳 有机胺 热力学分析 

分 类 号：TQ225.241[化学工程—有机化工]