Methane-selective oxidation to methanol and ammonia selective catalytic reduction of NOx over monolithic Cu/SSZ-13 catalysts: Are hydrothermal stability and active sites same?

Fuel ◽  
2022 ◽  
Vol 309 ◽  
pp. 122178
Author(s):  
Caixia Zhou ◽  
Hailong Zhang ◽  
Lufa Yang ◽  
Danfeng Wu ◽  
Shuai He ◽  
...  
2018 ◽  
Vol 237 ◽  
pp. 263-272 ◽  
Author(s):  
Peirong Chen ◽  
Abhishek Khetan ◽  
Magdalena Jabłońska ◽  
Johannes Simböck ◽  
Martin Muhler ◽  
...  

ACS Catalysis ◽  
2013 ◽  
Vol 3 (3) ◽  
pp. 413-427 ◽  
Author(s):  
Upakul Deka ◽  
Ines Lezcano-Gonzalez ◽  
Bert M. Weckhuysen ◽  
Andrew M. Beale

2019 ◽  
Vol 9 (1) ◽  
pp. 106-115 ◽  
Author(s):  
Yulong Shan ◽  
Xiaoyan Shi ◽  
Jinpeng Du ◽  
Yunbo Yu ◽  
Hong He

The Cu-exchanged RTH-type zeolites (Cu-RTH) were applied in ammonia-selective catalytic reduction (NH3-SCR) of NOx.


RSC Advances ◽  
2019 ◽  
Vol 9 (29) ◽  
pp. 16790-16796 ◽  
Author(s):  
Anand Chokkalingam ◽  
Watcharop Chaikittisilp ◽  
Kenta Iyoki ◽  
Sye Hoe Keoh ◽  
Yutaka Yanaba ◽  
...  

SSZ-16 (AFX-type) zeolite prepared in 2 h, so far the fastest, shows enhanced hydrothermal-stability and activity in selective-catalytic-reduction of NOx.


2021 ◽  
Author(s):  
Yulong Shan ◽  
Jinpeng Du ◽  
Yan Zhang ◽  
Wenpo Shan ◽  
Xiaoyan Shi ◽  
...  

Abstract Zeolites, as efficient and stable catalysts, are widely used in the environmental catalysis field. Typically, Cu-SSZ-13 with small-pore structure shows excellent catalytic activity for selective catalytic reduction of NOx with ammonia (NH3-SCR) as well as high hydrothermal stability. This review summarizes major advances in Cu-SSZ-13 applied to the NH3-SCR reaction, including the state of copper species, standard and fast SCR reaction mechanism, hydrothermal deactivation mechanism, poisoning resistance, and synthetic methodology. The review gives a valuable summary of new insights on the matching between SCR catalyst design principles and the characteristics of Cu2+-exchanged zeolitic catalysts, highlighting the significant opportunity presented by zeolite-based catalysts. Principles for designing zeolites with excellent NH3-SCR performance and hydrothermal stability are proposed. On the basis of these principles, more hydrothermally stable Cu-AEI and Cu-LTA zeolites are elaborated as well as other alternative zeolites applied to NH3-SCR. Finally, we call attention to the challenges facing Cu-based small-pore zeolites that still need to be addressed.


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