”Kinetics of preferential CO oxidation in H2 excess (COPROX) over CuO/CeO2 catalysts”

MORENO, MÁXIMO; MARIÑO, FERNANDO; BARONETTI, GRACIELA; LABORDE, MIGUEL

INTERNATIONAL JOURNAL OF HYDROGEN ENERGY

PERGAMON-ELSEVIER SCIENCE LTD

Año: 2008 vol. 33 p. 3538 - 3542

0360-3199

A kinetic study has been performed for CO oxidation in hydrogen excess, i.e. under COPROX conditions, over CuO/CeO2 catalysts. Experiences under differential and integral reactor conditions have been made and a simple power-law type mathematical expression was obtained. The fitted parameters were activation energy (55 kJ.mol-1) and partial orders of reaction (very close to 0 for O2 and 0.73 for CO). These results are consistent with mechanisms proposed in the literature for CO oxidation reaction.