scholarly journals Promotional Effect of Ce on Iron-Based Catalysts for Selective Catalytic Reduction of NO with NH3

Catalysts ◽  
2016 ◽  
Vol 6 (8) ◽  
pp. 112 ◽  
Author(s):  
Xiaobo Wang ◽  
Lei Zhang ◽  
Shiguo Wu ◽  
Weixin Zou ◽  
Shuohan Yu ◽  
...  
RSC Advances ◽  
2020 ◽  
Vol 10 (67) ◽  
pp. 40948-40959
Author(s):  
Caixia Liu ◽  
Huijun Wang ◽  
Yalian Bi ◽  
Ziyin Zhang

The roles of Fe3+ and SO42− are different at low and high temperatures due to their interaction. It is the appropriate contents of Fe3+ and SO42− that can result in high NH3-SCR activity at varying temperatures.


Catalysts ◽  
2020 ◽  
Vol 10 (9) ◽  
pp. 1035
Author(s):  
Baiyu Fan ◽  
Ziyin Zhang ◽  
Caixia Liu ◽  
Qingling Liu

The Fe/(SZr) and S(Fe/Zr) sulfated iron-based catalysts, prepared by impregnation methods through changing the loading order of Fe2O3 and SO42− on ZrO2, were investigated on selective catalytic reduction (SCR) of NOx by ammonia. It was studied that the existent forms of Fe2O3 and SO42− on the surface of catalysts were affected by the loading order. The Fe/(SZr) catalyst surface had isolated Fe2O3 and SO42− species and followed both the L-H mechanism and the E-R mechanism, whereas the S(Fe/Zr) catalyst contained SO42− specie and sulfate only and mainly followed the E-R pathway. These factors affected the redox ability and NH3 adsorption, which might be key to the SCR reaction.


2011 ◽  
Vol 7 (4) ◽  
pp. 581-589 ◽  
Author(s):  
Yufeng Zhao ◽  
Bo Zhao ◽  
Yuqun Zhuo ◽  
Changhe Chen ◽  
Xuchang Xu

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