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题名: Synthesis and Thermochemical Properties of New Ternary Lanthanum Complex La(Glu)(Im)(6)(ClO4)(3)center dot 4HClO(4)center dot 4H(2)O
作者: Lue Xue-Chuan2;  Tan Zhi -Cheng1, 3;  Gao Xiao-Han2
关键词: Heat capacity ;  La(Glu)(Im)(6)(ClO4)(3)center dot 4HClO(4)center dot 4H(2)O ;  Adiabatic calorimetry ;  Thermodynamic function ;  Phase transition ;  Thermal stability
刊名: ACTA PHYSICO-CHIMICA SINICA
发表日期: 2009-10-01
DOI: 10.3866/PKU.WHXB20091001
卷: 25, 期:10, 页:1945-1950
收录类别: SCI
文章类型: Article
WOS标题词: Science & Technology ;  Physical Sciences
类目[WOS]: Chemistry, Physical
研究领域[WOS]: Chemistry
英文摘要: A new ternary lanthanurn complex, La(Glu)(Im)(6)(ClO4)(3)center dot 4HClO(4)center dot 4H(2)O (Glu: glutamic acid, Im: imidazole), was synthesized and its thermodynamic properties were studied. Heat capacities of the complex were measured with a high-precision automatic adiabatic calorimeter over a temperature range from 80 to 390 K and the thermodynamic functions (H-T-H-298.15) and (S-T-S-298.15) were derived from the heat capacity data with a temperature interval of 5 K. Glass and phase transitions of the new complex at around 216 and 246 K were observed both by adiabatic calorimetry and differential scanning calorimetry (DSC) analyses. Thermodynamic data of the phase transitions were calculated and the transition mechanism was determined to be a 're-orientational process of the perchlorate ions in the complex. The thermal stability of the complex was tested by the thermogravimetric (TG) technique and a possible mechanism for its decomposition was proposed.
关键词[WOS]: TEMPERATURE HEAT-CAPACITY ;  THERMODYNAMIC PROPERTIES ;  RARE-EARTH ;  CALORIMETRY ;  CRYSTALLINE ;  PR ;  RE
语种: 英语
WOS记录号: WOS:000271079900001
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/141377
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, Liaoning, Peoples R China
3.Chinese Acad Sci, Dalian Inst Chem Phys, China Ion Liquid Lab, Dalian 116023, Peoples R China

Recommended Citation:
Lue Xue-Chuan,Tan Zhi -Cheng,Gao Xiao-Han. Synthesis and Thermochemical Properties of New Ternary Lanthanum Complex La(Glu)(Im)(6)(ClO4)(3)center dot 4HClO(4)center dot 4H(2)O[J]. ACTA PHYSICO-CHIMICA SINICA,2009,25(10):1945-1950.
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