Health & Environmental Research Online (HERO)


Print Feedback Export to File
8287198 
Journal Article 
Preferred enhancement of fast-SCR by Mn/CeSiOx catalyst: Study on Ce/Si promotion and shape dependence 
Li, W; Li, TYu; Wey, M; , 
2021 
Yes 
Chemical Engineering Journal
ISSN: 1385-8947 
ELSEVIER SCIENCE SA 
LAUSANNE 
403 
126317 
English 
WOS:000579752500046 
A series of Mn/CeSiOx catalysts were synthesized to investigate the Ce/Si ratios and morphology effect of Ce/ SiOx support for the selective catalytic reduction (SCR) of NO with NH3 at low temperature. The characterization and catalytic test showed that the 0.3Mn/Ce8Si2Ox-R catalyst exhibits high NOx conversion at low temperature. The Ce/Si ratio was 8/2 over the 0.3Mn/Ce8Si2Ox-R catalyst, increasing the surface acidity and inhibiting the side reaction of NH3. The {110} and {100} facts of the nanorod structure are rich in Ce3+ species and oxygen vacancies for the SCR reaction. Moreover, the citric acid method was employed on 0.3Mn/Ce8Si2Ox-R-CA to improve the interaction between Mnn+ and Ce8Si2Ox-R and enhance the strength of surface acidity, leading to the highest NOx conversion and Fast-SCR process. During the suppression effect of SO2 or HCl on catalytic activity, the 0.3Mn/Ce8Si2Ox-R-CA catalyst shows higher poison resistance to HCl than SO2.