Non-isothermal decomposition kinetics and lifetime of Tb2(0-MBA)6(PHEN)2
Non-isothermal decomposition kinetics and lifetime of Tb2(0-MBA)6(PHEN)2作者机构:ExperimentalCenterNormalUniversityShijiazhuang050016China DepartmentofComputerHebeiNormalCollegeofScienceandTechnologyChangli066600China DepartmentofChemistryHebeiNormalUniversityShijiazhuang050091China
出 版 物:《Rare Metals》 (稀有金属(英文版))
年 卷 期:2003年第22卷第3期
页 面:155-159页
核心收录:
学科分类:081704[工学-应用化学] 07[理学] 08[工学] 0817[工学-化学工程与技术] 0703[理学-化学] 070301[理学-无机化学]
基 金:This project was financially supported by the Natural Science Foundation of Hebei Province (Nos. 202140 and 203148) Hebei Education Department (No. 2001121)
主 题:thermochimica non-isothermal kinetics TG-DTG terbium complex O-methylbenzoate 1,10-phenanthroline
摘 要:The thermal decomposition of Tb_2(O-MBA)_6(PHEN)_2 (O-MBA: o-methylbenzoate;PHEN: 1,10-phenanthroline) and its kinetics were studied under the non-isothermal condition bythermogravimetry-derivative thermogravimetry (TG-DTG) techniques. Kinetic parameters were obtainedfrom analysis of TG-DTG curves by the Achar method and the Madhusudanan-Krishnan-Ninan (MKN) *** most probable mechanism function was suggested by comparing the kinetic parameters. The kineticequation for the first stage can be expressed as dα/dt = Aexp(-E/RT)·3(1 - α)^(2/3). Thelifetime equation at mass loss of 10% was deduced as lnτ= -28.7429 + 19797.795/T by isothermalthermogravimetric analysis.