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题名: Calorimetric study and thermal, analysis of [ErY(Ala)(4)(H2O)(8)](ClO4)(6) (Ala=alanine)
作者: Liu, BP;  Tan, ZC;  Nan, ZD;  Liu, P;  Sun, LX;  Xu, F;  Lan, XZ
关键词: adiabatic calorimetry ;  [ErY(Ala)(4)(H2O)(8)](ClO4)(6) ;  heat capacity ;  thermal decomposition
刊名: JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY
发表日期: 2003
卷: 71, 期:2, 页:623-628
收录类别: SCI
文章类型: Article
WOS标题词: Science & Technology ;  Physical Sciences
类目[WOS]: Chemistry, Analytical ;  Chemistry, Physical
研究领域[WOS]: Chemistry
英文摘要: A solid complex of rare-earth compounds with alanine, [ErY(Ala)(4)(H2O)(8)](ClO4)6 (Ala=alanine), was synthesized, and a calorimetric study and thermal analysis for it was performed through adiabatic calorimetry and thermogravimetry. The low-temperature heat capacity of [ErY(Ala)(4)(H2O)(8)](ClO4)(6) was measured with an automated adiabatic precision calorimeter over the temperature range from 78 to 377 K. A solid-solid phase transition was found between 99 and 121 K with a peak temperature at 115.78 K. The enthalpy and entropy of the phase transition was determined to be 1.957 kJ mol(-1), 16.90 J mol(-1) K-1, respectively. Thermal decomposition of the complex was investigated in the temperature range of 40similar to550degreesC by use of the thermogravimetric and differential thermogravimetric (TG/DTG) analysis techniques. The TG/DTG curves showed that the decomposition started from 120 and ended at 430degreesC, completed in three steps. A possible mechanism of the thermal decomposition was elucidated.
关键词[WOS]: HEAT-CAPACITY
语种: 英语
WOS记录号: WOS:000181454400031
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/138283
Appears in Collections:中国科学院大连化学物理研究所_期刊论文

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作者单位: 1.Chinese Acad Sci, Dalian Inst Chem Phys, Thermochem Lab, Dalian 110623, Peoples R China
2.Changde Normal Coll, Dept Chem, Changde 415000, Peoples R China

Recommended Citation:
Liu, BP,Tan, ZC,Nan, ZD,et al. Calorimetric study and thermal, analysis of [ErY(Ala)(4)(H2O)(8)](ClO4)(6) (Ala=alanine)[J]. JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY,2003,71(2):623-628.
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