Thermochemical Behavior of Crystalline RE(Val)Cl3·6H2O (RE = Nd, Er, Val = Valine)†
详细信息 查看全文
- 作者：Jing-Nan Zhang‡ ; § ; ; Zhi-Cheng Tan*‡ ; § ; ; Bei-Ping Liu ; Quan Shi‡ ; § ; ; Bo Tong‡ ;
- 刊名：Journal of Chemical & Engineering Data
- 出版年：2009
- 出版时间：February 12, 2009
- 年：2009
- 卷：54
- 期：2
- 页码：392-395
- 全文大小：118K
- 年卷期：v.54,no.2(February 12, 2009)
- ISSN：1520-5134
文摘
Heat capacities of two solid complexes of rare-earth elements with valine RE(Val)Cl3·6H2O (RE = Nd, Er, Val = Valine) have been measured with a high-precision automatic adiabatic calorimeter over the temperature range from (78 to 376) K. An anomaly of a large step in the heat capacity curve was detected in the temperature range of roughly (308 to 314) K and (297 to 300) K for the Nd and Er complex, respectively, which may be attributed to a glass transition corresponding to freezing of structural disorder. Thermal decomposition of the two complexes was studied by a thermogravimetric (TG) technique, and the possible mechanism for the decomposition was suggested.