钐-邻硝基苯甲酸与1,10-邻菲咯啉配合物的热分解动力学(英文)  

Thermal Decomposition Kinetics of Sm(Ⅲ) Complex with o-Nitrobenzoate and 1,10-phenanthroline

作　　者：任宁[1] 张建军[1] 张存英[2] 宿素玲[1] 张海燕[1] 田靓[1] 

机构地区：[1]河北师范大学实验中心 [2]石家庄市第一中学,石家庄050011

出　　处：《无机化学学报》2007年第6期1078-1084,共7页Chinese Journal of Inorganic Chemistry

基　　金：河北省自然科学基金(No.B2007000237);河北省教育厅自然科学基金(No.2004325);河北师范大学重点自然科学基金(No.L2006Z06,L2005Y12)资助项目。

摘　　要：The complex of Sm2(o-NBA)6(PHEN)2 (o-NBA, o-Nitrobenzoate; PHEN, 1,10-phenanthroline) was prepar-ed and characterized by elemental analysis, IR and UV spectraoscopy. The thermal decomposition mechanism of Sm2(o-NBA)6(PHEN)2 was studied under a static air atmosphere by TG-DTG. The thermal decomposition kinetics of the complex for the first stage was studied under non-isothermal condition. The most probable mechanism functions of the thermal decomposition reaction for the first stage are: G(α)=[-ln(1-α)]1/2, f(α)=2(1-α)[-ln(1-α)]1/2. The activation energy E for the first stage is 259.50 kJ·mol-1, the pre-exponential factor A is 36.19×1018 min-1. The lifetime equation at weight-loss of 10% was deduced as lnτ=-36.70+27 572.12/T by isothermal thermogravimetric analysis.The complex of Sm2（o-NBA）6（PHEN）2 （o-NBA, o-Nitrobenzoate; PHEN, 1,10-phenanthroline） was prepared and characterized by elemental analysis, IR and UV spectraoscopy. The thermal decomposition mechanism of Sm2 （o-NBA）6（PHEN）2 was studied under a static air atmosphere by TG-DTG. The thermal decomposition kinetics of the complex for the first stage was studied under non-isothermal condition. The most probable mechanism functions of the thermal decomposition reaction for the first stage are： G（α）=[-ln（1-α）]^1/2,f（α）=2（1-α）[-ln（1-α）]^1/2. The activation energy E for the first stage is 259.50 kJ·mol^-1, the pre-exponential factor A is 36.19×10^18 min^-1. The lifetime equation at weight-loss of 10% was deduced as lnτ=-36.70＋27 572.12/T by isothermal thermogravimetric analysis.

关 键 词：邻硝基苯甲酸 1 10-邻菲咯啉 钐配合物 热分解动力学 

分 类 号：O643.12[理学—物理化学]