Role of silicotungstic acid on the catalytic performance over CeO 2 ‐HSiW catalysts for selective catalytic reduction of NO x with NH 3

Author(s):  
Junjie Jin ◽  
Zhongxian Song ◽  
Xuejun Zhang ◽  
Yanli Mao

RSC Advances ◽  
2015 ◽  
Vol 5 (110) ◽  
pp. 90235-90244 ◽  
Author(s):  
Shuangshuang Lai ◽  
Dongmei Meng ◽  
Wangcheng Zhan ◽  
Yun Guo ◽  
Yanglong Guo ◽  
...  

Ce doped Cu/ZSM-5 catalysts were prepared by the incipient-wetness-impregnation method, and the effect of Ce doping on the structure and the catalytic performance was investigated in detail for the selective catalytic reduction of NO with NH3





Clay Minerals ◽  
1997 ◽  
Vol 32 (4) ◽  
pp. 665-672 ◽  
Author(s):  
K. Bahranowski ◽  
J. Janas ◽  
T. Machej ◽  
E. M. Serwicka ◽  
L. A. Vartikian

AbstractA series of V-doped titania-pillared clay catalysts, characterized by ICP-AES chemical analysis, X-ray diffraction, BET surface area measurement, and ESR spectroscopy, have been tested in the selective catalytic reduction of NO by NH3. An ESR analysis shows that V dopant is anchored to the titania pillars. Vanadyl species with differing degrees of in-plane V-O π-covalent bonding are produced depending on the method of sample preparation. Polymeric V species appear as the V content is increased. Catalytic performance of these systems depends on the method of preparation and on the V content. The best catalyst, converting 90-100% NO in the temperature range 523-623 K, is obtained by exchange of pillared montmorillonite with vanadyl ions, at an extent of exchange below the level where significant amounts of polymeric V species appear. The co-pillared catalyst, containing vanadyl centres characterized by a higher degree of in-plane ncovalent bonding (according to ESR), is less selective than the exchanged samples.



2010 ◽  
Vol 96 (3-4) ◽  
pp. 408-420 ◽  
Author(s):  
Fudong Liu ◽  
Hong He ◽  
Changbin Zhang ◽  
Zhaochi Feng ◽  
Lirong Zheng ◽  
...  




2018 ◽  
Vol 347 ◽  
pp. 313-321 ◽  
Author(s):  
Yulin Li ◽  
Xiaojin Han ◽  
Yaqin Hou ◽  
Yaoping Guo ◽  
Yongjin Liu ◽  
...  


RSC Advances ◽  
2020 ◽  
Vol 10 (22) ◽  
pp. 12908-12919
Author(s):  
Weifeng Li ◽  
Shuangling Jin ◽  
Rui Zhang ◽  
Yabin Wei ◽  
Jiangcan Wang ◽  
...  

P species can effectively enhance the catalytic activity of carbon aerogels for NO reduction at low temperature.





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