3092

Influence of residual K+K+ on the catalytic performance of CuO–CeO2CuO–CeO2 catalysts in preferential oxidation of CO in excess hydrogen

“…CO 2 or H 2 O might screen the catalyst at lower temperatures from the adsorption of CO and O 2 , which lead to the decrease of CO conversion at temperatures lower than 180 C [22]. However, CO 2 and H 2 O could only bring a temporary poisoning effect on the catalyst, for the adsorbed CO 2 or H 2 O had much weaker interaction with the catalyst than that of CO [8].…”

“…The PROX may be the most suitable method to reduce the amount of carbon monoxide to a level for use in electrochemical fuel cells [5]. The catalysts employed in the PROX include noble and nonnoble metal catalysts, while CuO2CeO 2 catalysts show a catalytic performance as well as, if not better than, noble metal catalysts [6][7][8][9]. Generally, preparation methods have a strong influence on the catalytic performance of CuO2CeO 2 catalysts [9,10].…”