Cu(x)/HZSM-5用于低温NH_(3)选择性催化还原NO性能研究  

Study on Performance of Cu(x)/HZSM-5 for Selective Catalytic Reduction of NO with NH_(3) at Low Temperature

作　　者：张相俊 Zhang Xiangjun(China Petroleum&Chemical Corporation Jinan Branch,Jinan 250100,China)

机构地区：[1]中国石油化工股份有限公司济南分公司,山东济南250100

出　　处：《云南化工》2021年第11期40-42,共3页Yunnan Chemical Technology

摘　　要：采用浸渍法制备Cu(x)/HZSM-5系列催化剂,活性评价表明,Cu(6)/HZSM-5表现出较好低温脱硝性能,在O_(2)的存在下,185~340℃时NO的转化率大于99%。通过XRD、TPD、TPR对催化剂性能进行表征,结果显示,Cu在催化剂的表面主要以CuO的形式存在,Cu(6)/HZSM-5良好的催化活性是与其具有良好的氧化还原性和特殊的吸附脱附性能有关。Cu(x)/HZSM-5 catalyst was prepared by impregnation.The denitrification activity results showed that the Cu(6)/HZSM-5 showed good SCR activity of NO by NH_(3).In the oxygen,the NO conversion rate reaches over 99%when the reaction temperature was 185~340℃.The catalysts were characterized by XRD,XEM,TPD,TPR and so on.The results showed that Cu mainly exists on the surface of the catalyst in the form of CuO.The good catalytic activity of Cu(6)/HZSM-5 mainly depends on its good redox,special adsorption and desorption properties.

关 键 词：选择性催化还原 NO NH_(3) CuO分子筛催化剂 

分 类 号：O643.36[理学—物理化学]