Thermal decomposition reaction kinetics of complexes of [Sm(o-MOBA)_3bipy]_2·H_2Oand [Sm(m-MOBA)_3bipy]_2·H_2O

摘要

The complexes of [Sm(o-MOBA)_3bipy]_2·H_2Oand [Sm(m-MOBA)_3bipy]_2·H_2O(o(m)-MOBAo(m)-methoxybenzoic acid, bipy-2,2'-bipyridine) have been syn-thesized and characterized by elemental analysis, IR, UV,XRD and molar conductance, respectively. The thermaldecomposition processes of the two complexes were studiedby means of TG–DTG and IR techniques. The thermaldecomposition kinetics of them were investigated fromanalysis of the TG and DTG curves by jointly usingadvanced double equal-double steps method and Starinkmethod. The kinetic parameters (activation energy E andpre-exponential factor A) and thermodynamic parameters(ΔH~≠ , ΔG~≠ and ΔS~≠)of the second-step decompositionprocess for the two complexes were obtained, respectively.