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题名: Thermodynamic properties and molar heat capacity of Er-2(Asp)(2)(Im)(8)(ClO4)(6)center dot 10H(2)O
作者: Lv, X. -C.2;  Tan, Z. -C.1, 3;  Gao, X. -H.2
关键词: Er-2(Asp)(2)(Im)(8)(ClO4)(6)center dot 10H(2)O ;  Adiabatic calorimetry ;  Low-temperature heat capacity ;  Glass transition ;  Phase transition ;  Thermal analysis
刊名: JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY
发表日期: 2011-03-01
DOI: 10.1007/s10973-010-1218-6
卷: 103, 期:3, 页:1119-1124
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 complex of Erbium perchloric acid coordinated with l-aspartic acid and imidazole, Er-2(Asp)(2)(Im)(8)(ClO4)(6)center dot 10H(2)O was synthesized for the first time. It was characterized by IR and elements analysis. The heat capacity and thermodynamic properties of the complex were studied with an adiabatic calorimeter (AC) from 80 to 390 K and differential scanning calorimetry (DSC) from 100 to 300 K. Glass transition and phase transition were discovered at 220.45 and 246.15 K, respectively. The glass transition was interpreted as a freezing-in phenomenon of the reorientational motion of ClO4- ions and the phase transition was attributed to the orientational order/disorder process of ClO4- ions. The thermodynamic functions [H (T) - H (298.15)] and [S (T) - S (298.15)] were derived in the temperature range from 80 to 390 K with temperature interval of 5 K. Thermal decomposition behavior of the complex in nitrogen atmosphere was studied by thermogravimetric (TG) analysis and differential scanning calorimetry (DSC).
关键词[WOS]: PHASE-TRANSITION ;  CRYSTALLINE ;  COMPLEX
语种: 英语
WOS记录号: WOS:000287712400043
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/142611
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 116023, Peoples R China
2.Liaoning Shihua Univ, Sch Chem & Mat Sci, Fushun 113001, Peoples R China
3.Chinese Acad Sci, Dalian Inst Chem Phys, China Ion Liquid Lab, Dalian 116023, Peoples R China

Recommended Citation:
Lv, X. -C.,Tan, Z. -C.,Gao, X. -H.. Thermodynamic properties and molar heat capacity of Er-2(Asp)(2)(Im)(8)(ClO4)(6)center dot 10H(2)O[J]. JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY,2011,103(3):1119-1124.
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