【摘要】 研究了微量一氧化碳在Pt/C催化剂上和在硫酸电解液中电氧化反应动力学.在0.947V下,其经验速率方程如下,其中y为一与H₃O⁺浓度有关的参数. i=k_αP_coC_H3⁺O^yexp（-E_α/RT） 假设反应的速率控制步骤为吸附的CO和吸附的OH间的电化学反应,则可导得与经验速率方程具有相同形式的理论速率方程.更多还原

【Abstract】 Under the condition that the effect of mass transfer and IR drop are negligible, we have determined experimentally the influences of CO and H3O+ concentration and temperature on the rates of electro-oxidation of trace carbon monoxide on the Pt/C catalyst in aqueous sulphuric acid. At the constant potential (0.947V vs N. H. E. ) the overall rate equation may be expressed byAssuming that the rate of electro-oxidation of carbon monoxide is controlled by the electrochemical reaction of the adsorbed CO and adsorbed OH and that the surface of catalyst is homogeneous, the kinetic equationcan be derived. the two Egs. have identical forms, when 1/2≤m≤1, the true activation energy calculated is E = 12. 5kcal/molc.更多还原