analysis and IR spectral measurement. The thermal dehydrations of the Mn(II) dicarboxylate hydrates were investigated by TG-DTA. The temperatures at which dehydration occurred were taken as a measure of the strength of the MnOH 2 bond, and these were found to vary with increasing number of CH 2 groups in the dicarboxylic acid. The kinetic parameters for the dehydration were calculated by employing a computation
摘要 通过将MnCO 3 粉末或浓MnSO 4 溶液加入到相应二
羧酸的
水溶液中,制备了二
羧酸锰(II)
水合物Mn[OOC(CH 2 ) n COO] · x H 2 O。通过光学显微镜观察沉淀化合物的晶型。获得的晶体为椭圆形、短棒状或非常小的不均匀颗粒。晶体不同于二
羧酸的晶体。获得的二
羧酸盐通过 X 射线衍射分析和红外光谱测量进行表征。通过TG-DTA研究了Mn(II)二
羧酸盐
水合物的热脱
水。脱
水发生的温度被视为衡量 MnOH 2 键强度的指标,并且发现这些随着二
羧酸中CH 2 基团数量的增加而变化。脱
水的动力学参数采用计算方法计算。发现三维扩散模型最适合描述主反应的动力学结果。