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作者根据在100℃、180℃时La~(3+)-NaY型沸石交换反应等温线的测定和十三种单一稀土(Ln)元素在180℃时的交换度与相应Ln~(3+)离子水合焓关系的研究以及在不同温度下交换反应速率常数、反应级数与交换反应表观活化能的测定,比较系统地研究了La~(3+)-NaY型的水热交换反应,从而比较有据地提出这类交换反应的机理。
According to the determination of the exothermic exchange reaction of La ~ (3 +) - NaY zeolite at 100 ℃ and 180 ℃ and the exchange degree of 13 single rare earth elements (Ln) at 180 ℃ with the corresponding Ln ~ (3+) Ion hydration enthalpy and the reaction rate constant, the reaction order and the apparent activation energy of the exchange reaction at different temperatures, the La ~ (3 +) - NaY-type water-heat exchange reaction was systematically studied, More clearly put forward the mechanism of such exchange reaction.