Adsorption of ethanol on the modified ruthenium catalysts in alkaline media

作者：Korchagin O V^*; Tarasevich M R; Novikov V T

来源：Russian Chemical Bulletin, 2011, 60(1): 42-48.

• electrocatalysis
• bifunctional catalysis
• ethanol adsorption
• depth of ethanol electrooxidation rate
• platinum-free catalysts
• Temkin equation
• Roginskii-Zel'dovich equation
• irregularity factor

Regularities of ethanol adsorption in alkaline medium on the surface of the monoruthenium Ru/C catalyst and systems promoted by nickel and vanadium oxides, Ru-VO(x)/C and Ru-NiO(x)/C, were studied by non-stationary voltammetry techniques. An analysis of the kinetic and concentration dependences of adsorption showed that an increase in the content of the promoting component in the bimetallic systems enhances the energy heterogeneity of the catalyst surface. The data on adsorption measurements were compared with the results of previous studies of the kinetics and depth of ethanol electrooxidation on the examined catalysts. The larger quantity of electricity consumed for the oxidation of adsorbed particles formed on the surface of the metallooxide systems corresponds to higher extents of electrooxidation and rate than those for the monoruthenium catalyst.

• 出版日期2011-1
• 单位北京化工大学