镥配合物的绝热量热法测试和热力学函数(英文)  

Adiabatic Calorimetry and Thermodynamic Functions of Lu Complex

作　　者：曹慧[1] 高肖汉[1] 吕雪川[1] 谭志诚[2] 潘璐[1] 焦玉娟[1] 耿仁勇 

机构地区：[1]辽宁石油化工大学化学化工和环境学部化学与材料科学学院,抚顺113001 [2]中国科学院大连物理化学研究所热化学实验室,大连116023

出　　处：《化学通报》2015年第7期608-612,共5页Chemistry

基　　金：国家自然科学青年基金项目(21103078,21003069)资助

摘　　要：本文合成了Lu（NO3）3（C2H5O2N）4·H2O,用红外和元素分析对其进行了表征。用高精度全自动绝热量热仪,测定了该配合物在80~382 K温区的热容,利用实验热容数据,根据热容与焓、熵的热力学关系,求出了配合物在85~350 K温区内每隔5K相对于298.15K的标准热力学函数[HT-H298.15]和[ST-S298.15]。在80~350 K温度区间内,配合物的热容随温度升高而增大,没有相转移点和热力学吸收峰的出现,该配合物在此温度区间内是稳定存在的。A complex of lutetium nitric acid coordinated with 2-aminoacetic acid （ C2HsO2N） , Lu （ NOx ） （C2HsO2N）4, H20 was synthesized and characterized by IR and elements analysis. The low-temperature heat capacities of the complex was measured with a precision automatic adiabatic calorimeter from 80 K to 382K, and the thermodynamic functions [ HT-H298.15] and [ 298.15 were derived based on the heat capacity measurementa in the temperature range of 85 - 350 K with temperature interval of 5 K. In the temperature range of 80 - 350 K, the heat capacities increased in a smooth and continuous manner and no phase transition or thermal anomaly occurred. Therefore, the complex was stable in the above temperature range.

关 键 词：绝热量热法 热力学函数 低温热容 Lu(NO3)3(C2H5O2N)4·H2O 

分 类 号：O641.4[理学—物理化学]