Enhancement of the activity of Cu/TiO2 catalyst by Eu modification for selective catalytic reduction of NOx with NH3

被引:12
作者
Liu, Yuan-zhen [1 ,2 ]
Xu, Qi-yan [3 ]
Guo, Rui-tang [1 ,2 ]
Duan, Chao-peng [1 ,2 ]
Wu, Gui-lin [1 ,2 ]
Miao, Yu-fang [1 ,2 ]
Gu, Jing-wen [1 ,2 ]
机构
[1] Shanghai Univ Elect Power, Sch Energy Source & Mech Engn, Shanghai 200090, Peoples R China
[2] Shanghai Engn Res Ctr Power Generat Environm Prot, Shanghai 200090, Peoples R China
[3] Anhui Univ Technol, Sch Met Engn, Manshan 243032, Anhui, Peoples R China
基金
中国国家自然科学基金;
关键词
NOx; SCR; Cu; TiO; Eu modification; Characterization; LOW-TEMPERATURE SCR; TI MIXED OXIDES; SO2; RESISTANCE; PERFORMANCE; CU; NH3-SCR; MN; FE; CE; MN/TIO2;
D O I
10.1007/s11356-020-09101-8
中图分类号
X [环境科学、安全科学];
学科分类号
08 ; 0830 ;
摘要
The Cu/TiO2 catalysts with the addition of Eu were developed by the sol-gel way for the selective catalytic reduction (SCR) of NOx by NH3. Activity tests revealed that CuEu/TiO2-0.15 catalyst showed the optimal de-NOx performance in a wide temperature range (150-300 degrees C), along with an admirable SO2 tolerance. According to characterization analysis, the relationship between the NH3-SCR performance and physicochemical characters of samples was explored. The adjunction of Eu on Cu/TiO2 catalyst can contribute to the formation of a large amount of Cu2+, adsorbed oxygen, and acid sites on the catalyst surface. Moreover, the Eu addition on Cu/TiO2 is favorable to the generation of activated NOx and NH3 substances adsorbed on the catalyst surface, which would conduce to the NH3-SCR process by Langmuir-Hinshelwood (L-H) mechanism effectively.
引用
收藏
页码:27663 / 27673
页数:11
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