The oxidation of CO and C2H4 over metal oxides: V. SO2 effects
The oxidation of CO and C2H4 over metal oxides: V. SO2 effects
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CO和C2H4在金属氧化物上的氧化：五、SO2效应
DOI：
10.1016/0021-9517(75)90286-9
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发表时间：
1975
影响因子：
7.3
通讯作者：
Y. Yao
中科院分区：
文献类型：
--
作者：
Y. Yao
研究了CO和C2H4在CuO、Fe2O3、MnO2、SnO2、ZrO2和CuCr2O4上的氧化反应动力学。结果与之前报道的其他金属氧化物的结果进行了比较。该反应相对于O2、CO和C2H4呈正分数阶反应，并且被H2O不同程度地抑制。 Co3O4、CuO和CuCr2O4对CO和C2H4均比其他氧化物具有更高的活性。活性降低与气相 SO2 浓度的函数关系以及 SO2 效应的可逆性已经确定。一般来说，SO2对C2H4氧化的影响小于对CO的影响。CuO和CuCr2O4比Co3O4对SO2的耐受性更强，因此可能是汽车排放控制氧化催化剂的更好候选者。
The kinetics of CO and C2H4oxidation over CuO, Fe2O3, MnO2, SnO2, ZrO2and CuCr2O4have been studied. The results are compared with those over the other metal oxides reported previously. The reactions are positive fractional order with respect to O2, CO and C2H4and inhibited by H2O to various degrees. Co3O4, CuO and CuCr2O4have higher activity for both CO and C2H4than the other oxides. The reduction in activity as a function of SO2concentration in the gaseous phase and the reversibility of the SO2effect have been determined. In general, the SO2effect on C2H4oxidation is less than that on CO. CuO and CuCr2O4are more tolerant to SO2than Co3O4and thus could be better candidates for oxidation catalysts for automobile emission control.