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Thermal Decomposition Mechanism and Non Isothermal Kinetics of Complex of [La_2(P-MBA)_6(PHEN)_2]2H_2O
作者姓名:张建军  王瑞芬  白继海  王淑萍
作者单位:1. Experimental Center,Hebei Normal University,Shijiazhuang 050016,China; 2. Department of Chemistry,Hebei Normal University,Shijiazhuang 050016,China; 3. Department of Computer,Hebei Teachers′ College of Occupation Technology,Changli,China
基金项目:ProjectsupportedbytheNaturalScienceFoundationofHebeiProvince ( 2 0 2 1 4 0 )andHebeiEducationDepartment ( 2 0 0 1 1 2 1 )
摘    要:Owingtothevariationofcoordinatedmodesforcarboxylateanions ,manydifferenttypesofcrystalstructuresfortherareearthcomplexeswitharomaticacidandnitrogen containingligandswereobtained1~ 4 ] .Theirthermaldecompositionbehaviorhadbeenre portedinpreviouspapers5~ 8] .…


Thermal Decomposition Mechanism and Non-Isothermal Kinetics of Complex of [La2(P-MBA)6(PHEN)2]2H2O
Zhang Jianjun,Wang Ruifen,Bai Jihai,Wang Shuping.Thermal Decomposition Mechanism and Non Isothermal Kinetics of Complex of [La_2(P-MBA)_6(PHEN)_2]2H_2O[J].Journal of Rare Earths,2002,20(5).
Authors:Zhang Jianjun  Wang Ruifen  Bai Jihai  Wang Shuping
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.
Keywords:rare earths  lanthanum complex  non  isothermal kinetics  P  methylbenzoic acid  thermal decomposition  TG  DTG
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