文献类型：期刊文献

中文题名：Catalytic activity of Cu-SSZ-13 prepared with different methods for NH_3-SCR reaction

英文题名：Catalytic activity of Cu-SSZ-13 prepared with different methods for NH_3-SCR reaction

作者：Meng-Jie Han[1];Yun-Lei Jiao[1];Chun-Hong Zhou[1];Yang-Long Guo[1];Yun Guo[1];Guan-Zhong Lu[1];Li Wang[1];Wang-Cheng Zhan[1]

机构：[1]Key Laboratory for Advanced Materials and Research Institute of Industrial Catalysis, East China University of Science and Technology

年份：2019

卷号：38

期号：3

起止页码：210

中文期刊名：Rare Metals

外文期刊名：稀有金属（英文版）

收录：CSTPCD;;Scopus;CSCD:【CSCD2019_2020】；PubMed;

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)

语种：英文

中文关键词：SSZ-13;zeolite;Selective;catalytic;reduction;Nitrogen;oxides;Preparation;method;Cu2+

外文关键词：SSZ-13 zeolite;Selective catalytic reduction;Nitrogen oxides;Preparation method;Cu^(2+)

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(NO_x) 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 Cu^(2+) 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.
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(NO_x) 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 Cu^(2+) 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.