Influence of different preparation methods on the activity of Ce and Mo co-doped ZSM-5 catalysts for the selective catalytic reduction of NOx by NH3

2020 ◽  
Vol 27 (32) ◽  
pp. 40495-40503
Author(s):  
Zhifang Li ◽  
Jian Yang ◽  
Yadong Zhou ◽  
Jinxing Cui ◽  
Yuanyuan Ma ◽  
...  
Keyword(s):  
Selective Catalytic Reduction ◽  
Catalytic Reduction ◽  
Preparation Methods ◽  
Reduction Of Nox ◽  
Co Doped

scholarly journals The Latest Research Progress of NH3-SCR in the SO2 Resistance of the Catalyst in Low Temperatures for Selective Catalytic Reduction of NOx

Catalysts ◽  
2020 ◽  
Vol 10 (9) ◽  
pp. 1034 ◽  
Author(s):  
Caixia Liu ◽  
Huijun Wang ◽  
Ziyin Zhang ◽  
Qingling Liu
Keyword(s):  
Selective Catalytic Reduction ◽  
Low Temperatures ◽  
Catalytic Reduction ◽  
Complex Oxide ◽  
Research Progress ◽  
Preparation Methods ◽  
Nh3 Scr ◽  
So2 Resistance ◽  
Reduction Of Nox ◽  
Further Development

The selective catalytic reduction (SCR) has been widely used in industrial denitrification owing to its high denitrification efficiency, low operating costs, and simple operating procedures. However, coal containing a large amount of sulfur will produce SO2 during combustion, which makes the catalyst easy to be deactivated, thus limiting the application of this technology. This review summarizes the latest NH3-SCR reaction mechanisms and the deactivation mechanism of catalyst in SO2-containing flue gas. Some strategies are summarized for enhancing the poison-resistance through modification, improvement of support, the preparation of complex oxide catalyst, optimizing the preparation methods, and acidification. The mechanism of improving sulfur resistance of catalysts at low temperatures is summarized, and the further development of the catalyst is also prospected. This paper could provide a reference and guidance for the development of SO2 resistance of the catalyst at low temperatures.

scholarly journals Effect of preparation methods on the activity of VOx/CeO2 catalysts for the selective catalytic reduction of NOx with NH3

2015 ◽  
Vol 5 (1) ◽  
pp. 389-396 ◽  
Author(s):  
Zhihua Lian ◽  
Fudong Liu ◽  
Hong He
Keyword(s):  
Selective Catalytic Reduction ◽  
Catalytic Reduction ◽  
Precipitation Method ◽  
Homogeneous Precipitation ◽  
Preparation Methods ◽  
Homogeneous Precipitation Method ◽  
Reduction Of Nox

VOx/CeO2 catalysts prepared by a homogeneous precipitation method exhibited high NOx conversion and strong SO2 resistance in NH3-SCR reaction.

Highly dispersed MnOx–FeOx supported by silicalite-1 for the selective catalytic reduction of NOx with NH3 at low temperatures

2020 ◽  
Vol 10 (16) ◽  
pp. 5525-5534 ◽  
Author(s):  
Jialiang Gu ◽  
Bingjun Zhu ◽  
Rudi Duan ◽  
Yan Chen ◽  
Shaoxin Wang ◽  
...  
Keyword(s):  
Selective Catalytic Reduction ◽  
Low Temperatures ◽  
Catalytic Reduction ◽  
Highly Dispersed ◽  
Reduction Of Nox

MnOx–FeOx-Loaded silicalite-1 catalysts exhibit high NOx conversion at low temperatures.

scholarly journals A study on the selective catalytic reduction of NOx by ammonia on sulphated iron-based catalysts

RSC Advances ◽  
2020 ◽  
Vol 10 (67) ◽  
pp. 40948-40959
Author(s):  
Caixia Liu ◽  
Huijun Wang ◽  
Yalian Bi ◽  
Ziyin Zhang
Keyword(s):  
Selective Catalytic Reduction ◽  
High Temperatures ◽  
Catalytic Reduction ◽  
Reduction Of Nox ◽  
Iron Based ◽  
Iron Based Catalysts

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.

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