摘要
有公司的 NO2 的减小面对没有并且过量氧，为烟道气体的模型混合物，在 0.1% Pt/SiO2 上，催化剂被学习。相关反应机制例如公司并且不的氧化，被讨论。有一扇狭窄的温度窗户，这被发现(180190 ???? ???????? 琠楲档獯湡桴湩吗？？
Reduction of NO2 with CO in the presence of NO and excess oxygen, a model mixture for flue gas, over a 0.1% Pt/SiO2 catalyst was studied. The related reaction mechanisms, such as oxidation of CO and NO, were discussed. It was found that there was a narrow temperature window （180-190 ℃） for the reduction of NO2 by CO. When the temperature was lower than the lower limit of the window, the reduction hardly occurred, while when the temperature was higher than the upper limit of the window, the direct oxidation of CO by O2 occurred and thereby NO2 could not be effectively reduced by CO. The presence of NO shifted the window to higher temperatures owing to the inhibition effect of NO on the activation of O2 on Pt, which made it possible to reduce NO2 by CO in flue gas.
