Bi and Three–Metallic Electrocatalysts Preparation for Methanol Oxidation
Yara Márquez–Navarro*, Laura Galicia**, Víctor Hugo Lara, and Gloria Del Ángel
Universidad Autónoma Metropolitana–Iztapalapa, Departamento de Química, San Rafael Atlixco 186 Col. Vicentina, Delegación Iztapalapa, Apdo. Postal 55–534, C. P. 09340, México D. F. (México) Tel. 58044671, Fax 58044666. Responsible authors: *iaruka@yahoo.com, **lgl@xanum.uam.mx.
Recibido el 26 de octubre de 2001
Aceptado el 16 de febrero del 2008
Abstract
Bi and tri–metallic (Pt–Ru/C, Pt–Mo/C and Pt–Ru–Mo/C) catalysts were synthesized by using as precursors the metallic salts and applying the co–impregnation method. The tri–metallic catalysts underwent different thermal treatments and they were characterized by X–Ray. The catalytic activity for methanol oxidation reaction was determined by cyclic voltammetry (CV). The results show that the materials calcined before reduction presented the highest catalytic activity for methanol oxidation reaction.
Key words: Electrochemical oxidation; methanol; Pt–Ru–Mo supported catalyst.
Resumen
Se sintetizaron catalizadores bi y tri–metálicos de (Pt–Ru/C, Pt–Mo/C and Pt–Ru–Mo/C) a partir de las sales precursoras empleando el método de co–impregnación. Los catalizadores tri–metálicos fueron sometidos a diferentes tratamientos térmicos, todos los materiales catalíticos fueron caracterizados por Rayos X. La actividad catalítica fue determinada mediante la reacción de oxidación de metanol aplicando la técnica de voltamperometría cíclica (CV). Los resultados mostraron que los materiales calcinados antes de ser reducidos en flujo de H2, presentaron una mayor actividad catalítica para la reacción de metanol.
Palabras clave: Electroxidación; metanol; catalizadores Pt–Ru–Mo soportados.
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]]>Acknowledgements
Y. Márquez gratefully acknowledges the scholarship from CONACyT to pursue her postgraduate studies and LG wish to thank the CONACyT for financial support at the project no. 2115–35135.
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