Journal
CATALYSIS LETTERS
Volume 151, Issue 4, Pages 966-979Publisher
SPRINGER
DOI: 10.1007/s10562-020-03365-y
Keywords
Denitration; Mn-Ti oxide catalyst; Low-temperature NH3-SCR; Sol-gel method; Catalyst preparation parameters; DeNO(x)
Categories
Funding
- Beijing Natural Science Foundation [2194075]
- Beijing Institute of Petrochemical Technology [15031862004-1]
Ask authors/readers for more resources
A series of Mn-Ti oxide catalysts were synthesized by the sol-gel method, and the effects of different synthesis conditions on the characteristics and SCR activity of the catalysts were investigated. The results showed that the calcination temperature and metal source significantly influenced the properties and activity of the catalysts, with relatively low calcination temperature and appropriate metal sources leading to high SCR activity.
A series of Mn-Ti oxide catalysts were synthesized by the sol-gel method and the effects of different synthesis conditions were investigated in sequence. The microstructures and properties of the catalysts were characterized by using N-2 adsorption-desorption, XRD, SEM, H-2-TPR, NH3-TPD, Raman and XPS. The catalytic performance over Mn-Ti oxide catalysts prepared under different synthesis conditions for the low-temperature SCR of NO with NH3 were also comparatively evaluated. The results reveal that the calcination temperature and metal source play a significant role in the characteristics and the SCR activities of the catalysts. A relatively low calcination temperature is beneficial to low-temperature SCR activity. Manganese nitrate or manganese acetate as the Mn source combining with tetrabutyl titanate as Ti source can achieve high SCR activities. The excellent low-temperature NH3-SCR activity can be ascribed to the appropriate textural properties, amorphous Mn-oxides with equal ratio of Mn3+/Mn4+, good low-temperature reducibility and abundant surface B-acid sites. [GRAPHICS] .
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available