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就ＳＯ_2，Ｖ_2Ｏ_5担载量和反应温度对活性炭担载的Ｖ_2Ｏ_5催化剂催化还原ＮＯ活 性的影响进行了研究．发现ＳＯ_2对此催化剂具有明显的促进作用，这种促进作用与 Ｖ_2Ｏ_5担载量和反应温度有密切的关系．在较低Ｖ_2Ｏ_5担载量（重量百分比为１％～５％）时， ＳＯ_2对催化活性有明显正效应，而在较高Ｖ_2Ｏ_5担载量（＞７％）时，这种促进作用消失，甚 至有负效应．低于１８０℃，ＳＯ_２的存在毒化催化剂，但高于此温度反而有利于反应的进行． 对ＳＯ_2的促进作用的原因进行了初步研究和讨论，结果说明其来源于ＳＯ_2在催化剂表面 的吸附，并形成ＳＯ~2-_４，从而增加了催化剂表面酸性和催化活性．
The effect of SO_2, V_2O_5 loading and reaction temperature on the catalytic activity of V_2O_5 supported on activated carbon catalyst for NO reduction was studied. SO 2 was found to have a significant role in promoting this catalyst. This promoting effect is closely related to the loading of V 2 O 5 and the reaction temperature. At lower V 2 O 5 loadings (1-5% by weight), SO 2 had a significant positive effect on the catalytic activity, whereas at higher V 2 O 5 loadings (> 7%), this accelerating effect disappeared, Have a negative effect. Below 180 ℃, SO_2 poisoning catalyst exists, but higher than this temperature but conducive to the reaction. The reasons for the promotion of SO 2 were studied and discussed. The results show that the SO 2 originated from the adsorption of SO 2 on the surface of the catalyst and formed SO 2 -2, increasing the acidity and catalytic activity of the catalyst.