中文摘要：

实验采用一步离子交换法制备Cu-Ce-La-ZSM-5催化剂,然后采用共混法制得Cu-Ce-La-ZSM-5/CaH2催化剂。采用扫描电镜（SEM）,电感耦合等离子体发射光谱（ICP-AES）,X射线衍射（XRD）,红外（FTIR）以及NO吸脱附（NO-TPD）对催化剂进行表征。结果显示CaH2的加入使得催化剂中铜离子存在形式发生变化,催化剂表面变光滑洁净,并且吸附NO能力增强。NO催化分解实验的结果表明CaH2提高了催化剂活性和抗氧性。CaH2助催性是由于其受热分解过程中产生的H2能将Cu^2＋还原为具有催化活性的Cu^＋,同时使催化剂表面洁净光滑更容易吸附NO。

英文摘要：

Cu-Ce-La-ZSM-5 catalyst was prepared by one-step ion exchanging.And then Cu-Ce-La-ZSM-5/CaH2 was prepared by mixing calcium hydride and Cu-Ce-La-ZSM-5.The prepared catalysts were characterized by scanning electron microscopy（SEM）,atomic emission spectroscopy with inductively coupled plasma atomization（ICP-AES）,X-ray powder diffraction（XRD）,fourier transform infrared spectroscopy（FTIR） and temperature-programmed desorption of nitrogen oxide（NO-TPD）.The results showed that the presence of CaH2 reduced the form of copper ion in catalysts.Furthermore Cu-Ce-La-ZSM-5/CaH2 catalyst had smoother surface and showed stronger adsorption ability to NO.It could be concluded from catalytic tests that Cu-Ce-La-ZSM-5CaH2 exhibited better resistance to oxygen and higher activity.CaH2 could improve the ability of Cu-Ce-La-ZSM-5 because it could produce H2 at higher temperatures.The produced H2 could deoxidize Cu2＋ to Cu＋ which was active in NO decomposition and increased the adsorption ability by smoothing the surface of catalysts.