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Article Dans Une Revue Journal of Catalysis Année : 2002

Catalytic Reduction of Nitrate in Water on a Monometallic Pd/CeO2 Catalyst

Résumé

Whereas monometallic palladium catalysts deposited on classical supports such as silica, alumina, or carbon are totally inactive for nitrate reduction, we have demonstrated that a reduced Pd/CeO2 catalyst is active for this reaction (33 mmol/(min gmet)). The promoting effect of the support, based on its redox properties, was clearly identified, nitrate reduction probably occurring through the interaction of oxygen atoms of nitrate with the oxygen vacancies created at the ceria surface upon the reduction treatment. Conversely, nitrite intermediates are converted through a classical catalytic reaction by hydrogen adsorbed on palladium sites.

Domaines

Catalyse
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Dates et versions

hal-02109963 , version 1 (20-08-2021)

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Florence Epron, Florence Gauthard, Jacques Barbier, Carole Pinéda. Catalytic Reduction of Nitrate in Water on a Monometallic Pd/CeO2 Catalyst. Journal of Catalysis, 2002, 206 (2), pp.363-367. ⟨10.1006/jcat.2001.3498⟩. ⟨hal-02109963⟩
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