乙酰氨基丙二酸二乙酯的量热学研究  

Calorimetric Investigation into Diethylacetamidomalonate (C_9H_(15)NO_5)

作　　者：邹光龙[1] 付维军[2] 谭志诚[3] 

机构地区：[1]贵州民族学院化学与环境科学学院,贵州贵阳550025 [2]洛阳师范学院化学化工学院,河南洛阳471022 [3]中国科学院大连化学物理研究所,辽宁大连116023

出　　处：《贵州大学学报（自然科学版）》2009年第2期37-40,共4页Journal of Guizhou University:Natural Sciences

基　　金：黔高层次人才科研条件特助经费项目(TZJF-200741);黔自然科学基金(2007101)资助

摘　　要：用精密自动绝热量热仪测定了乙酰氨基丙二酸二乙酯在78-395 K温区的摩尔热容.根据实验测定的热容数据,用最小二乘法拟合计算出热容对温度的多项式方程,得到其相变焓、相变熵分别为34.295 kJ.mol-1、93.009 J.K-1.mol-1.根据热力学函数关系式计算了其在80-395 K温区每隔5 K的热力学函数[HT-H298.15]和[ST-S298.15].此外,用TG-DSC热分析技术进一步考查了该物质在相变区间的重复性和可靠性.The Precision automatic Adiabatic calorimeter was adopted to measure the molar heat capacity of Diethylacetamidomalonate in 78 - 395 temperature range. The least squares fitting was adopted to calculate the polynomial equation of heat capacity and temperature, thus the phase transition entropies were obtained. They were 34. 295 kJ·mol^-1,93. 009 J·K^-1·mol^-1, respectively. TG-DSC thermal analytic technology was adopted to further investigate the repeativity and reliabity, of the material during the phase transition.

关 键 词：乙酰氨基丙二酸二乙酯 热容 绝热量热 热力学函数 热分析 

分 类 号：O657.99[理学—分析化学]