Low temperature heat capacities and thermodynamic properties of rare earth triisothiocyanate hydrates .2. Pr(NCS)(3)center dot 7H(2)O and Nd(NCS)(3)center dot 7H(2)O

被引：0
|
作者：
Tan, ZC
Takasuke, M
Hiroshi, S
Zhang, ZY
Yin, JZ
Jiang, BG
Sun, TS
机构：
[1] OSAKA UNIV,FAC SCI,MICROCALORIMETRY RES CTR,TOYONAKA,OSAKA 560,JAPAN
[2] NW UNIV XIAN,THERMOCHEM LAB,XIAN 710069,PEOPLES R CHINA
[3] SHANDONG UNIV,DEPT CHEM,JINAN 250100,PEOPLES R CHINA
来源：
SCIENCE IN CHINA SERIES B-CHEMISTRY | 1996年 / 39卷 / 03期
关键词：
heat capacity; thermodynamic functions; rare earth; Pr(NCS)(3)center dot 7H(2)O; Nd(NCS)(3)center dot TH2O;
D O I：
暂无
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
Heat capacities of Pr(NCS)(3) . 7H(2)O and Nd(NCS)(3) . 7H(2)O have been measured from 13 to 300 K by using a fully automated adiabatic calorimeter. Schottky anomaly was observed for Pr(NCS)(3) . 7H(2)O below 50K. The polynomial equations for calculating the heat capacity values of the two compounds in the range of 13-300K were obtained by the least-squares fitting based on the experimental C-p data. The C-p values below 13K were estimated by using the Debye-Einstein and Schottky heat capacity functions. The standard molar thermodynamic functions were computed from 0 to 300K. The standard entropies and Gibbs energies of formation of the two compounds were also calculated.
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页码：276 / 284
页数：9
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