scholarly journals Promotional Effect of Cerium Oxide on the Catalytic Properties of Ce-Mn-Ti-O Catalysts for Selective Catalytic Reduction of NO

2012 ◽  
Vol 28 (03) ◽  
pp. 681-685
Author(s):  
ZHUANG Ke ◽  
◽  
QIU Jing ◽  
XU Bo-Lian ◽  
FAN Yi-Ning
Keyword(s):  
Selective Catalytic Reduction ◽  
Cerium Oxide ◽  
Catalytic Properties ◽  
Catalytic Reduction ◽  
Reduction Of No ◽  
Promotional Effect

scholarly journals Physicochemical and Catalytic Properties of Vanadia/Titania Catalysts. V. Selective Catalytic Reduction of NO with NH3

2002 ◽  
Vol 20 (10) ◽  
pp. 937-945
Author(s):  
Th. El-Nabarawy ◽  
M.N. Alaya ◽  
S.A. Sayed Ahmed ◽  
A.M. Youssef
Keyword(s):  
Selective Catalytic Reduction ◽  
Catalytic Properties ◽  
Catalytic Reduction ◽  
Impregnation Method ◽  
Reduction Of No ◽  
No Conversion ◽  
Scr Of No ◽  
Monolayer Coverage

Vanadia/titania catalysts were prepared containing 6.0 or 8.0 wt% V2O5 via the impregnation method. The samples as prepared were calcined at 400°C or 600°C, respectively. Selective catalytic reduction (SCR) of NO with NH3 was carried out at 257°C over the prepared catalysts. NO conversion as a function of time was followed and the stationary conversion versus the amount of catalyst employed was also investigated. It was found that the vanadia/titania catalysts calcined at 400°C were more active in the SCR of NO with NH3 relative to those calcined at 600°C. This was attributed to such catalysts possessing complete monolayer coverage of vanadia on the titania substrate. It was established that V5+ was not the active vanadia species but V4+ and V3+ may act as such for the SCR of NO with NH3.

Promotional effect of the TiO2 (001) facet in the selective catalytic reduction of NO with NH3: in situ DRIFTS and DFT studies

2016 ◽  
Vol 6 (24) ◽  
pp. 8516-8524 ◽  
Author(s):  
Lei Huang ◽  
Kaiwen Zha ◽  
Supawadee Namuangruk ◽  
Anchalee Junkaew ◽  
Xin Zhao ◽  
...  
Keyword(s):  
Selective Catalytic Reduction ◽  
Catalytic Reduction ◽  
Dft Studies ◽  
In Situ Drifts ◽  
Reduction Of No ◽  
Promotional Effect ◽  
Fast Scr

NO on anatase-TiO2 (001) was mainly in the form of NO2 which could trigger the subsequent ‘fast SCR’ reaction.

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