银络合物在催化核上的还原反应

研究了尿嘧啶银络合物在胶态金属及其硫化物核上被对苯二酚还原的反应，并以Ａｇ和Ｐｔ电极代替催化核与对苯二酚显影剂和银络合物组成原电池作为电化学模型，分别测定该络合物阴极反应和对苯二酚阳极反应的电流。结果表明，原电池的电流大小与反应速度成正比关系，从而为物理显影电极理论提供实验依据。

The Reduction of Siver Complex on Catalytic Nuclei

The reduction of silver complex on different catalytic nuclei (Ag, PdS, Pt,and CoS) by hydroquinone was studied. Experimental results showed that the effect of different catalytic nuclei on the reaction rate aze quite different, the sequence in the or der of decreasing rate is Ag>PdS>Pt>CoS. It was also revealed that the reaction rate is proportional to the concentrations of the silver complex and hydroquinne. An electro chemical model cell, made up of silver or platinum electrode used as catalytic nuclei, silver complex and hydroquinone developer as electrolytes, was devised to measure the cathodic and asedic currents. Experiment showed that the change of current density measured is consistent with the rate of the raection. This result supports the theory of physical development.