Thermal Decomposition Mechanism and Non-Isothermal Kinetics of Complex of [La2(P-MBA)6(PHEN)2]2H2O
来源期刊：JOURNAL OF RARE EARTHS2002年第5期
论文作者：王淑萍 王瑞芬 张建军 白继海
Key words：rare earths; lanthanum complex; non-isothermal kinetics; P-methylbenzoic acid; thermal decomposition; TG-DTG;
Abstract: The complex of [La2(P-MBA)6(PHEN)2]2H2O (P-MBA: p-methylbenzoate and PHEN: 1,10-phenanthroline) was prepared and characterized by elemental analysis and IR spectroscopy. The thermal behavior of [La2(P-MBA)6(PHEN)2]2H2O in dynamic nitrogen atmosphere was investigated by TG-DTG techniques. The results show that the thermal decomposition process of the [La2(P-MBA)6(PHEN)2]2H2O occurs in five steps. The empirical kinetic model for the first-step thermal decomposition obtained by Malek method is SB(m,n). The activation energy E and the pre-exponential factor lnA for this step reaction are 76.4 kJ*mol-1 and 24.92, respectively.
王淑萍1，王瑞芬1，张建军2，白继海3
(1.Department of Chemistry, Hebei Normal University, Shijiazhuang 050016, China;
2.Experimental Center, Hebei Normal University, Shijiazhuang 050016, China;
3.Department of Computer, Hebei Teachers′ College of Occupation Technology, Changli, China)
Abstract:The complex of [La2(P-MBA)6(PHEN)2]2H2O (P-MBA: p-methylbenzoate and PHEN: 1,10-phenanthroline) was prepared and characterized by elemental analysis and IR spectroscopy. The thermal behavior of [La2(P-MBA)6(PHEN)2]2H2O in dynamic nitrogen atmosphere was investigated by TG-DTG techniques. The results show that the thermal decomposition process of the [La2(P-MBA)6(PHEN)2]2H2O occurs in five steps. The empirical kinetic model for the first-step thermal decomposition obtained by Malek method is SB(m,n). The activation energy E and the pre-exponential factor lnA for this step reaction are 76.4 kJ*mol-1 and 24.92, respectively.
Key words:rare earths; lanthanum complex; non-isothermal kinetics; P-methylbenzoic acid; thermal decomposition; TG-DTG;
【全文内容正在添加中】
