用浸渍法制备的In/HZSM-5催化剂在甲烷还原一氧化氮反应中显示了很高的活性,500℃时,氧化氮的转化率可达100%.过量氧气的存在并没有对催化剂的活性产生很大的影响,这可能与In/HZSM-5催化剂上甲烷选择还原一氧化氮的反应机理有关.随着反应气体空速的增大,氧化氮的转化率缓慢下降,同时,甲烷的转化率也缓慢下降.这说明还原剂甲烷的适度活化在本反应中起着关键作用.
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