【摘要】 本文用直流极谱法,循环伏安法研究了TPPS及其锌配合物ZnTPPS的极谱还原性质。实验表明TPPS的第一步电极反应为可逆的两电子还原过程,有两个H~+参与反应。ZnTPPS第一步还原为不可逆电极过程,有一个H~+参与。循环伏安图表明ZnTPPS还原时或还原后有Zn(Ⅱ)的还原,可能是ZnTPPS的离解所致。TPPS和ZnTPPS在汞电极有相近的强吸附作用。测算了吸附等温式,饱和吸附量,吸附分子的面积,吸附系数和吸附自由能等参数。更多还原

【Abstract】 In the solution of （0.4 mol KOH + 0. 6mol NH₄Cl ）/L PH = 9. 5 TPPS produces three po-larographic waves. The first step of reduction which involves 2H⁺ is a 2e reversible electrodeprocess. Being coordinated with Zn（Ⅱ）, the complex of ZnTPPS gave two reduction wavesand one oxidation wave. The first reduction wave of ZnTPPS is reversible and involves oneH⁺. Redunction of Zn²⁺ during or after the first reduction wave may result from the disso-ciation of ZnTPPS. The nearly equal strong adsorption of TPPS and ZnTPPS on Hg electrode was observedand Γ⁵⁰,β₀, K₀ and G⁰ were cal culated.更多还原