Evaluation of catalytic systems based on CuO/CeO₂ in the reaction of preferential oxidation of CO:H₂ production under H₂

The preferential CO oxidation (PROX) is the most suitable for the purification of gas streams rich in H2 method. Catalysts CuO/CeO₂ have been developed and presented in the literature as a promising alternative for the reaction preferential oxidation of CO - CO-PROX. The objective of this work is to synthesize catalysts based on CuO/CeO₂ via Pechini synthesis method, characterize and analyze their structures and evaluate the catalytic performance of these materials used in CO-PROX reaction. Two samples of catalysts were developed based on CuO/CeO₂, containing 0.1 mol and one containing 0.5 mole of CuO. Both synthesized samples proved suitable for use in processes of conversion of CO to CO₂. However, the sample containing 0.1 mol CuO was catalytically more active than the sample containing 0.5 mol of the same active species.

catalyst; CuO/CeO₂ ; Pechini's method; H₂ production.