摘要
通过精密自动绝热热量计测定了配合物Zn(His)SO4·H2O(s)在78~390K温区的摩尔热容,由热容曲线得到其起始脱水温度328 90K;用最小二乘法拟合得到摩尔热容(Cp,m)对温度(T)的多项式方程,并在此基础上计算了它的各种热力学函数。此外,研究了其在惰性气氛下的热分解过程。
Lowtemperature heat capacities of the complex Zn(His)SO4·H2O(s)were precisely measured with a small sample precision automated adiabatic calorimeter over the temperature range from 78 to 390K.The initial dehydration temperature of the complex(T0=32890 K)was obtained by means of the analysis of heatcapacity curve.The experimental values of molar heat capacities were fitted to a polynomial equation of heat capacities (Cp.m)vs.temperature(T) with the least squares method,and the thermodynamic functions of the complex were calculated on the base of the equation.In addition,the thermal stability of the complex was studied by TGDTG and DSC techniques under the atmosphere of nitrogen.
出处
《化学研究与应用》
CAS
CSCD
北大核心
2003年第5期651-654,共4页
Chemical Research and Application
基金
国家自然科学基金资助项目(29773048)