Influence of samarium on the electrocatalytic activity of platinum electrodes for the hydrogenation of benzene |
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| Authors: | M. A. Quiroz, F. Có rdova, L. Salgado, M. Viniegra, Y. Meas G. Dí az |
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| Affiliation: | (1) Instituto de Estudios Avanzados, Universidad de las Américas-Puebla, Sta. Catarina Martir, Apdo. Postal 100, 72820 Cholula, Puebla, (México);(2) Depto. de Química, Universidad Autónoma Metropolitana-Izt., Apdo. Postal 55-534, 09340 México, (México);(3) Centro de Investigación y Desarrollo Tecnológico en Electroquímica, S. C. Apdo. Postal 064, 76700 Pedro Escobedo, Querétaro, (México);(4) Instituto de Física, Universidad Nacional Autónoma de México, Apdo. Postal 20-364, 01000 México, D. F., (México) |
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| Abstract: | The hydrogenation of benzene on platinum electrodes in 0.5 M sulfuric acid as supporting electrolyte has been studied in the presence and the absence of samarium in solution. The hydrogenation overpotential of preadsorbed benzene was diminished to  90 mV with samarium in the solution and the hydrogenation current was significatively increased. These results are interpreted in terms of a synergic effect of samarium on hydrogen adsorption and, consequently, on the electrocatalytic activity of the platinum electrode for the hydrogenation of benzene. |
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