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• W2353183846 abstract "The kinetics of the reaction between CO and O2 over Pd(1%)/CeO2(20%)TiO2 catalyst was studied. The CeO2TiO2 mixed oxide support was prepared by solgel method. The influence of the partial pressures of CO and O2 upon the reaction rate was investigated at 303 K. The corresponding kinetic orders are -1.0 for CO and 1.0 for O2 when CO and O2 partial pressures were in the range 5×10-4 MPa to 3×10-3 MPa and 1×10-3 MPa to 4×10-4 MPa, respectively. The effect of temperature on the reaction rate over the catalyst was examined between 303 K and 343 K under stoichiometric pO2/pCO condition. The average apparent energy of activation for the CO+O2 reaction is equal to 67.2 kJ·mol-1. The influence of the O2/CO ratio (x(O2)/x(CO)) on the lightoff performance was investigated. At the stoichiometric x(O2)/x(CO) (0.5), the lightoff temperature of CO oxidation was 345 K. The lightoff temperature was decreased with the increase of x(O2)/x(CO). At low CO concentration (0.5 %) and high x(O2)/x(CO) (6.3), the reaction of CO oxidation occurred even at room temperature and the lightoff temperature was only 308 K. With 1.0% CO in air at space velocity of 39 000 mL·h-1·g-1, the overall conversion of CO was achieved at ambient temperature (293303 K). The reaction stability was correlated with the reaction temperature, and the catalyst life lasted for 15.5 h at 313 K." @default.
• W2353183846 created "2016-06-24" @default.
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• W2353183846 date "2003-01-01" @default.
• W2353183846 modified "2023-09-23" @default.
• W2353183846 title "Effect of Reaction Condition on the Low-Temperature Oxidation of CO over Pd/Ce-Ti Catalyst" @default.
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