论文摘要
A series of Cu-SSZ-13 catalysts with the same Cu loading were prepared by different methods of incipient wetness impregnation [Cu-SSZ-13（IWI）], ion exchange[Cu-SSZ-13（IE）] and hydro-thermal synthesis [Cu-SSZ-13（HTS）]. Their activity for selective catalytic reduction of nitrogen oxides（NOx） with NH3 was determined. The results show that the Cu-SSZ-13（HTS） catalyst exhibits a better ammonia selective catalytic reduction（NH3-SCR）activity compared with the other two catalysts, over which more than 90% NO conversion is obtained at 215-600℃under the space velocity of 180,000 h-1. The characterization results reveal that the Cu-SSZ-13（HTS） catalyst possesses more amount of stable Cu2+ in the six-membered ring and high ability for NH3 and NO adsorption, leading to its high NH3-SCR activity, although this catalyst has low surface area. On the other hand, the activity of Cu-SSZ-13（IE） catalyst is almost the same as that of Cu-SSZ-13（IWI） catalyst at the temperature lower than 400 ℃, but the activity of the former is much higher than that of the latter at > 400 ℃ due to the high activity of Cu-SSZ-13（IWI） catalyst for NH3 oxidation.
论文目录
文章来源
类型: 期刊论文
作者: Meng-Jie Han,Yun-Lei Jiao,Chun-Hong Zhou,Yang-Long Guo,Yun Guo,Guan-Zhong Lu,Li Wang,Wang-Cheng Zhan
来源: Rare Metals 2019年03期
年度: 2019
分类: 工程科技Ⅰ辑
专业: 有机化工,环境科学与资源利用
单位: Key Laboratory for Advanced Materials and Research Institute of Industrial Catalysis, East China University of Science and Technology
基金: financially supported by the National Key Research and Development Program of China (No. 2016YFC0204300),the National Natural Science Foundation of China (Nos. 21577034 and 21333003),the Science and Technology Commission of Shanghai Municipality (No. 16ZR1407900)
分类号: X701;TQ426
页码: 210-220
总页数: 11
文件大小: 1334K
下载量: 53