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| Thermal decomposition kinetics and lifetime of the complex of Tb2（BA）6（PHEN）2 | |
| 作者姓名： | ZHANGJianjun WANGRuifen WANGShuping LIUHongmei LIJibiao BAIJihai |
| 作者单位： | [1]ExperimentalCenter,HebeiNormalUniversity,Shijiazhuang050016,China [2]CollegeofChemistry,HebeiNormalUniversity,Shijiazhuang050016,China [3]CollegeofChemistryandPharmaceuticalEngineering,HebeiUniversityofScienceandTechnology,Shijiazhuang050018,China [4]DepartmentofComputer,HebeiScienceandTechnologyTeachers＇College,Changli066600,China |
| 基金项目： | This project was supported by the Natural Science Foundation of Hebei Province (No. 202140，No. 203148) and Hebei Education Department (No. 2001121). |
| 摘 要： | The thermal behavior of Tb2(BA)6(PHEN)2 (BA: benzoate, and PHEN: 1,10-phenanthroline) in a static air atmospbere was investigated by TG-DTG, SEM and IR techniques. By the kinetic method of processing thermal analysis data put forward by Malek et al., it is defined that the kinetic model for the first-step thermal decomposition is SB(m, n). The activation energy E for this step reaction is 99.07 kJ/mol, the entropy of activation ΔS^≠ is -84.72 J/mol, the enthalpy of activation ΔH^≠ is 94.26 kJ/mol, the free energy of activation ΔG^≠ is 144.77 kJ/mol and the pre-exponential factor lnA is 20.93.The lifetime equation at mass-loss of 10% was deduced as lnτ = -29.0312 19760.83/T by isothermal thermogravimetric analysis. |
| 关 键 词： | 热分解 动力学 铽配合物 苯甲酸酯 1 10-菲咯啉 |
Thermal decomposition kinetics and lifetime of the complex of Tb2(BA)6(PHEN)2 |
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| ZHANGJianjun WANGRuifen WANGShuping LIUHongmei LIJibiao BAIJihai.Thermal decomposition kinetics and lifetime of the complex of Tb2(BA)6(PHEN)2[J].Rare Metals,2004,23(2):126-130. | |
| Authors: | ZHANG Jianjun Wang Ruifen WANG Shuping LIU Hongmei LI Jibiao BAI Jihai |
| Affiliation: | 1. Experimental Center, Hebei Normal University, Shijiazhuang 050016, China 2. College of Chemistry, Hebei Normal University, Shijiazhuang 050016, China 3. College of Chemistry and Pharmaceutical Engineering, Hebei University of Science and Technology, Shijiazhuang 050018, China 4. Department of Computer, Hebei Science and Technology Teachers' College, Changli 066600, China |
| Abstract: | The thermal behavior of Tb2(BA)6(PHEN)2 (BA: benzoate, and PHEN: 1,10-phenanthroline) in a static air atmosphere was investigated by TG-DTG, SEM and IR techniques. By the kinetic method of processing thermal analysis data put forward by Malek et al., it is defined that the kinetic modelfor the first-step thermal decomposition is SB(m, n). The activation energy E for this step reaction is 99.07 kJ/mol, the entropy of activation △S' is -84.72 J/mol, the enthalpy of activation △H' is 94.26 kJ/mol, the free energy of activation △G' is 144.77 kJ/mol and the pre-exponential factor lnA is 20.93.The lifetime equation at mass-loss of 10% was deduced as lnτ = -29.0312 + 19760.83/T by isothermal thermogravimetric analysis. |
| Keywords: | Lifetime kinetics benzoic acid terbium complex thermal decomposition |
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