研究了在低温等离子体和催化剂共同作用下,CH4选择催化还原(SCR)NO的反应.在所考察的金属氧化物催化剂中,γ-Al2O3表现出最高的催化活性.当等离子体放电功率为4.5 W,反应温度为300℃时,NO转化率为56.5％；该条件下单纯等离子体反应和以γ-Al2O3为催化剂时NO转化率分别为28.9％和0,表明等离子体与催化剂之间发生了协同催化作用.进一步研究表明,在低温等离子体的SCR-NO反应中,催化剂活性随着介电常数的增加而下降,而催化剂多孔结构和表面酸性可明显促进反应的进行.
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