Catalytic activity of Pt–Au/CeO2 catalyst for the preferential oxidation of CO in H2-rich stream

High performance of Cu/CeO2-Nb2O5 catalysts for preferential CO oxidation and total combustion of toluene

“…This negative effect may be due to the competitive adsorption of CO (and H 2 ) and CO 2 on the catalyst surface. The same behavior has been reported in the literature for some gold and copper catalysts [27,63,[65][66][67][68][69]. Zou et al [68] studied the CO conversion in CuZrCeO catalysts using DRIFTS.…”

“…The majority of the studies about CO preferential oxidation reaction in the presence of H 2 have been performed using gas mixtures consisting of CO, O 2 , H 2 and an inert component, He or N 2 [27,[63][64][65][66][67][68]. Nevertheless, this model does not simulate completely the actual conditions of a reforming stream.…”

Preferential oxidation of CO in excess of H2 on Pt/CeO2–Nb2O5 catalysts

“…Gamarraet al [62]havesuggested that the negative effect of CO 2 and H 2 O in the feed is due to formation of specific carbonatesat the interfacial sitesand the blockage of active sites by adsorbed water molecules. Monyanonet al [57]also found a negative effect of the temperature gives rise to a significant decrease in the intensity of the carbonate bands at 1567 and 1292 cm -1 . Furthermore, this decrease is slightly more significant for the pure ceria supported catalyst.…”

Development of high performance catalysts for CO oxidation using data-based modeling

“…Catalysts were prepared by the single-step co-precipitation method [33]. First, certain amount of corresponding precursors of active phase (noble metal), promoter (metal oxide) and support (another metal oxide) were loaded into a round-bottomed flask (capacity: 50 ml), followed by adding sufficient amount of urea and 20 ml of deionized (DI) water.…”