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本文应用Nernst-Planck方程研究了过渡金属离子Mn(Ⅱ)、Co(Ⅱ)、Ni(Ⅱ)、Cu(Ⅱ)、Zn(Ⅱ)、和Cd(Ⅱ)在焦磷钨酸锡上的离子交换反应动力学。在粒子扩散控制的条件下,当[M~(2+)]≥0.010mol/L时,其交换反应速率基本上不受金属离子浓度的影响.利用Apple-Ⅱ微机求解Nernst—Planck方程获得了自扩散系数、活化能和活化熵等动力学参数。这些参数的获得有助于揭示其离子交换机理。
In this paper, the ions of transition metal ions Mn (Ⅱ), Co (Ⅱ), Ni (Ⅱ), Cu (Ⅱ), Zn (Ⅱ) and Cd (Ⅱ) Exchange reaction kinetics. Under the condition of particle diffusion control, the rate of exchange reaction is almost unaffected by the concentration of metal ions when [M ~ (2 +)] ≥0.010mol / L. Using the computer-implemented Nernst-Planck equation Self-diffusion coefficient, activation energy and activation entropy and other kinetic parameters. The acquisition of these parameters helps to reveal their ion exchange mechanism.