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题名: Low-temperature heat capacity and standard entralpy of formation of neodymium glycine perchlorate complex [Nd-2(Gly)(6)(H2O)(4)](ClO4)(6)center dot 5H(2)O
作者: Xinmin, W.;  Chuansong, Q.;  Songsheng, Q.;  Zhicheng, T.
关键词: complex of rare earth ;  glycine ;  low-temperature heat capacity ;  [Nd-2(Gly)(6)(H2O)(4)](ClO4)(6)center dot 5H(2)O ;  standard enthalpy of formation
刊名: JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY
发表日期: 2007-11-01
卷: 90, 期:2, 页:569-573
收录类别: ISTP ;  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: Rare-earth perchlorate complex coordinated with glycine [Nd-2(Gly)(6)(H2O)(4)](ClO4)(6)center dot 5H(2)O was synthesized and its structure was characterized by using thermogravimetric analysis (TG), differential thermal analysis (DTA), chemical analysis and elementary analysis. Its purity was 99.90%. Heat capacity measurement was carried out with a high-precision fully-automatic adiabatic calorimeter over the temperature range from 78 to 369 K. A solid-solid phase transformation peak was observed at 256.97 K, with the enthalpy and entropy of the phase transformation process are 4.438 kJ mol(-1) and 17.270 J K-1 mol(-1), respectively. There is a big dehydrated peak appears at 330 K, its decomposition temperature, decomposition enthalpy and entropy are 320.606 K, 41.364 kJ mol(-1) and 129.018 J K-1 mol(-1), respectively. The polynomial equations of heat capacity of this compound in different temperature ranges have been fitted. The standard enthalpy of formation was determined to be -8023.002 kJ mol(-1) with isoperibol reaction calorimeter at 298.15 K.
关键词[WOS]: ENTHALPY
语种: 英语
WOS记录号: WOS:000251088600040
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/140653
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.Beijing Inst Petrochem Technol, Dept Mat & Chem Engn, Beijing 102617, Peoples R China
2.Wuhan Univ, Coll Chem & Mol Sci, Wuhan 430072, Peoples R China
3.Chinese Acad Sci, Dalian Inst Chem Phys, Thermochem Lab, Dalian 116023, Peoples R China

Recommended Citation:
Xinmin, W.,Chuansong, Q.,Songsheng, Q.,et al. Low-temperature heat capacity and standard entralpy of formation of neodymium glycine perchlorate complex [Nd-2(Gly)(6)(H2O)(4)](ClO4)(6)center dot 5H(2)O[J]. JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY,2007,90(2):569-573.
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