考察了原位合成的不同硅铝比的Cu ZSM 5 /堇青石整体式催化剂上的NO分解反应 .结果表明 ,在 5 73～773K的温度范围内 ,硅铝比分别为 6 0 ,5 5和 40的催化剂在 72 3K下NO的转化率最高 ,而硅铝比小于 2 5的催化剂上的NO转化率很低 .低温有利于N2 O的生成 .整体式催化剂上的NO转化率低于单纯的分子筛催化剂Cu ZSM 5 ,但其催化转换频率高于后者 The NO decomposition reaction of CuZSM 5 / cordierite monolith catalysts synthesized in situ with different Si / Al ratios was investigated. The results showed that the Si / Al ratios were 65 and 55% 40 had the highest NO conversion at 723K, whereas the NO conversion was very low at a catalyst with a Si / Al ratio of less than 25. Low temperatures contributed to the formation of N2 O. The NO conversion over the monolithic catalyst was lower than pure Molecular sieve CuZSM 5 catalyst, but its catalytic conversion frequency higher than the latter