| Low-Temperature Heat Capacity and Thermal Decomposition of Crystalline[Ho（Thr）（H2O）5]Cl3 |
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| 引用本文： | 蓝孝征,谭志诚,刘北平,南照东,孙立贤,徐芬.Low-Temperature Heat Capacity and Thermal Decomposition of Crystalline[Ho（Thr）（H2O）5]Cl3[J].中国化学,2003,21(8):1043-1046. |
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| 作者姓名： | 蓝孝征 谭志诚 刘北平 南照东 孙立贤 徐芬 |
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| 作者单位： | ThermochemistryLaboratory,DalianInstituteofChemicalPhysics,ChineseAcademyofSciences,Dalian,Liaoning116023,China |
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| 基金项目： | theNationalNaturalScienceFoundationofChina (No .2 0 0 73 0 47) |
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| 摘 要： | Rare earth elements have been widely used in many areas. Rare earth complex bearing an amino acid was synthesized to study the influence and the long-term effect of rare earth elements on environment and human beings,because amino acid is the basic unit of the living things. Previous work on these kinds of comidex is focused on synthesis and characterization of them. But thermodynamic data have seldom been reported. Here we present the thermod~nRmle study of Ho (Thr)(H20 )5]Cl3. The heat capecity of Holmium complex with threonine,Ho(Thr)(H2O)5]Cl3,was measured with an automatic adiabatic calorimeter in the temperature range from 79K to 330K and no thermal anomaly was found in this range,Thermodynamic functions relative to standard state 298.15K were derived from the heat capactiy data.Thermal decomposition behavior of the complex in nitrogen atmosphere in the range from 300K to 900K was studied by thermogravimetric(TG) technique and a possible decompostion mechanism was proposed according to the TG-DTG results.
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| 关 键 词： | 低温热常量 热分解 晶体 [Ho（Thr）（H2O）5]Cl3 苏氨酸稀土元素配合物 绝热式热量测定 热力学函数 热解重量分析 |
Low-Temperature Heat Capacity and Thermal Decomposition of Crystalline[Ho(Thr)(H_2O)_5]Cl_3 |
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| Lan,Xiao‐Zheng,Tan, Zhi‐Cheng,Liu, Bei‐Ptog,Nan, Zhao‐Dong,Sun, Li‐Xian,Xu, Fen.Low-Temperature Heat Capacity and Thermal Decomposition of Crystalline[Ho(Thr)(H_2O)_5]Cl_3[J].Chinese Journal of Chemistry,2003,21(8):1043-1046. |
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| Authors: | Lan Xiao‐Zheng Tan Zhi‐Cheng Liu Bei‐Ptog Nan Zhao‐Dong Sun Li‐Xian Xu Fen |
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| Abstract: | Rare earth elements have been widely used in many areas. Rare earth complex bearing an amino acid was synthesized to study the influence and the long term effect of rare earth elements on environment and human beings, because amino acid is the basic unit of the living things. Previous work on these kinds of complex is focused on synthesis and characterization of them. But their thermodynamic data have seldom been reported. Here we present the thermodynamic study of Ho(H 2O) 5]Cl 3. The heat capacity of Holmium complex with threonine, Ho(Thr)(H 2O) 5]Cl 3 , was measured with an automatic adiabatic calorimeter in the temperature range from 79 K to 330 K and no thermal anomaly was found in this range. Thermodynamic functions relative to standard state 298 15 K were derived from the heat capacity data. Thermal decomposition behavior of the complex in nitrogen atmosphere in the range from 300 K to 900 K was studied by thermogravimetric (TG) technique and a possible decomposition mechanism was proposed according to the TG DTG results. |
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| Keywords: | RE complex of threonine heat capacity thermal decomposition adiabatic calorimetry thermodynamic function TG analysis |
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