| 摘 要： | The kinetics of the CO+NO reaction and the adsorption of CO,NO,CO_2 and N_2O over Cu-M-O(Ⅰ)(M=Fe or Mn)and Cu-M-Ce-O(Ⅱ)catalystswere studied in a micro reactor system with TPD technique.The results showthat the catalytic activity of(Ⅱ)is higher than that of(Ⅰ)for the CO+NO re-action,and the higher the conversion of NO,the greater the activity differencebetween(Ⅰ)and(Ⅱ)is.Over(Ⅰ)the rate of NO elimination is dependent onthe partial pressures of NO,CO,CO_2 with the kinetics orders of0.75～0.71,0.95～0.96,-0.28～-0.30,respectively.The TPD study shows that thepresence of Ce in(Ⅱ)may promote the adsorption of NO,CO on the surface,that is to say,increase the coverage(θ)_(NO),(θ)_(CO),which results in the reaction or-ders with respect to NO,CO down in the kinetics equation.For CO_2 and N_2Othe situation is opposed,the presence of Ce makes the(θ)_(CO_2),and(θ)_(NO)on(Ⅱ)de-crease,which weakens the inhibition of CO_2 for the topic reaction.
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