【摘要】 目的　研究配合物K3[Fe(C2O4)3]·3H2O,K3[Cr(C2O4)3]·3H2O,K3[Al(C2O4)3]·3H2O和K2[Cu(C2O4)2]·2H2O的热分解过程及机理。方法　采用热分析方法对这4个配合物热分解过程进行研究,用Ozawa Flynn Wall,Friedman,ASTME6983种方法计算出每一步热分解反应的活化能(Ea)和指前因子(lgA)。结果　得出了这4个配合物每一步的热分解反应,并用上述3种方法计算了每一步的活化能和指前因子。结论　这4个配合物第1步热分解都是失去水,但Al,Fe,Cr配合物脱水过程的活化能大小与热解脱水的温度变化趋势基本一致,反映了配合物中水分子结合的难易程度;Cu配合物脱水温度均高于Al,Fe,Cr的配合物。这可能是由于Cu配合物中两个水分子参与配位,而其他配合物中的水为结晶水的缘故。更多还原

【Abstract】 AimThe thermal decomposition and mechanism of complexes K₃·3H₂O,K₃·3H₂O,K₃·3H₂O and K₂·2H₂O were studied respectively.（Methods）Thermal analysis and Ozawa-Flynn-Wall,Friedman and ASTME698.ResultsThe activation energy （Ea） and pre-exponential factor （lgA） of each decomposition reactions were calculated.ConclusionThe first steps of each complex decomposition are loss water,for Al,Fe,Cr complexes, the corresponding activation energies are consistent with the dehydration temperatures.But the dehydration temperature of the Cu complex is higher than those of other complexes, this perhaps was caused by coordination of the two water molecules.更多还原