微量一氧化碳电催化氧化的研究(Ⅱ)—钌的助催化作用

Study of Electrocatalytic Oxidation of Trace CO(Ⅱ)—Promotion of Ruthenium

金属铂是一氧化碳电氧化的最活泼催化剂。但是,从实用的观点,纯铂的电催化性能不够理想,需要对它进行多方面改性。本工作是关于钌在铂中的助催化功用的研究。

Using the potcnlioslatic and the kinetic methods,the promotion of ruthenium on the clectrocatalytic oxidation of trace carbon monoxide on Pt/C in 1N H_(2)SO_(4) was investigated.The results indicated that ruthenium can not only increases the clectrocatalytic activity of platinum,but also inhibitcs greatly the poisoning of the catalyst.Amechanistic model was proposed to explain the behaviour of ruthenium.