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中文摘要：
将K2SO4以等体积浸渍法担载在1wt％的V2O5／AC（V1／AC）催化／脱硫剂上，制备了K担载量分别为0．5wt％和L0wt％的K2SO4-V，／AC催化剂．结果表明，K2SO4的担载显著促进了V1／AC催化／脱硫剂的脱硫活性，延长了SO2的穿透时间，增加了有效硫容；再生后二次脱硫活性基本得以恢复，促进作用继续保持，因此是该催化／脱硫剂的有效助剂．对于较高的K担载量（1．0％），适度升高再生温度至350℃有助于其二次活性的恢复．另外，在K2SO4担载的V1／AC催化剂上，脱硫过程中有K2S2O7的形成，但只是中间产物而不是最终稳定产物，其对V1／AC催化／脱硫剂脱硫活性的促进作用，体现在中间物K2S2O7作为一个运输载体，促进了SO2的氧化产物SO3从催化剂氧化活性中心位置向周围孔道、储存位转移的过程，从而使得SO2的高转化率得以更长时间的保持。
英文摘要：
K2SO4 is loaded onto a 1 wt% V2O5/AC catalyst（VI/AC） via wet impregnation followed by calcination. It is found that, at K contents of 0. 5wt% and 1.0wt%, KESO4 promotes V1/AC＇s SO2 removal activity, as evidenced by increases in breakthrough time of SO2, and in SO2 capture. This promotion effect is maintained after regeneration of used catalyst in NH3 at 300℃. Results show that, K2S2O7 is formed as an intermediate in SO2 removal. It may act as a“ bridge ”to“transport” SO3/H2SO4 from V2O5 sites to surrounding pores, which accelerates the SO2 removal process.
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