Journal
APPLIED ORGANOMETALLIC CHEMISTRY
Volume 35, Issue 7, Pages -Publisher
WILEY
DOI: 10.1002/aoc.6237
Keywords
interaction; silicotungstic acid; surface acid sites; surface nitrate species
Categories
Funding
- National Natural Science Foundation of China [U1904174]
- Natural Science Youth Fund of Henan Province [202300410034]
- Young Teacher Foundation of Henan University of Urban Construction [YCJQNGGJS201903]
- Innovative Training Program for College Students in Henan Province [202011765035]
- Henan Key Scientific Research Projects [20A610003]
- Key Scientific and Technological Project of Henan Province [202102310341, 202102310604, 202102310280]
- Doctoral Research Start-up Project of Henan University of Urban Construction [990/Q2017011]
Ask authors/readers for more resources
CeO2 modified by silicotungstic acid showed superior performance in NH3-SCR reaction, achieving efficient NOx conversion by improving surface nitrate species and acid sites.
The CeO2 modified by silicotungstic acid (impregnation method [SiW/CeO2] and one pot method [CeO2-Si-W]) was investigated in the NH3-SCR reaction. The surface nitrate species and surface acid sites were improved by the introduction of silicotungstic acid into CeO2, which stopped forming stable nitrate, and then improved the N-2 selectivity. The interaction between Ce and W species existed and caused the formation of Ce-2(WO4)(3) at CeO2-Si-W, resulting in the abundance of unsaturated W=O, which contributed to the generation of Bronsted acid sites and was responsible for the superior SCR performance. Thus, CeO2-Si-W exhibited the best NOx conversion and nearly 100% NOx conversion was obtained at 225-450 degrees C.
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
Share Paper
