Thermal decomposition kinetics and lifetime of the complex of Tb2(BA)6(PHEN)2

稀有金属（英文版）, 2004, 23(2): 126-130.

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1.Experimental Center, Hebei Normal University, Shijiazhuang 050016, China

2.College of Chemistry, Hebei Normal University, Shijiazhuang 050016, China

3.College of Chemistry, Hebei Normal University, Shijiazhuang 050016, China

4.College of Chemistry and Pharmaceutical Engineering, Hebei University of Science and Technology, Shijiazhuang 050018, China

5.Experimental Center, Hebei Normal University, Shijiazhuang 050016, China

6.Department of Computer, Hebei Science and Technology Teachers' College, Changli 066600, China

基金项目: 国家自然科学基金(202140, 203148) Hebei Education Department(2001121)

Thermal decomposition kinetics and lifetime of the complex of Tb2(BA)6(PHEN)2

Keywords： Lifetime

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.

参考文献

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Thermal decomposition kinetics and lifetime of the complex of Tb2(BA)6(PHEN)2

参考文献