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Formic acid oxidation

Electrocatalysis

Oxidation of small organic molecules

  1. J. M. Feliu,
  2. E. Herrero

Published Online: 15 DEC 2010

DOI: 10.1002/9780470974001.f206048

Handbook of Fuel Cells

Handbook of Fuel Cells

How to Cite

Feliu, J. M. and Herrero, E. 2010. Formic acid oxidation. Handbook of Fuel Cells. .

Author Information

  1. Universidad de Alicante, Departamento de Química Física, Alicante, Spain

Publication History

  1. Published Online: 15 DEC 2010

Abstract

Formic acid oxidation on platinum is a structure-sensitive reaction that takes place via a mechanism with two paths. One of the paths leads to the formation of CO (poison intermediate), which adsorbs strongly on to the surface and hinders the oxidation of formic acid through the active intermediate. Both paths are structure sensitive. Activities for both paths are parallel; a high activity for the path through the active intermediate is usually associated with a high activity for poison formation. The modification of the surface with adatoms has been used to increase catalytic activity and/or diminish the poisoning of the platinum surfaces. The behavior of the adatoms on the different platinum surfaces is discussed and a model for the actuation of the adatoms is given.

Keywords:

  • polycrystalline platinum electrodes;
  • platinum single crystals;
  • formic acid;
  • adatoms;
  • CO