Back to Search Start Over

A highly effective urchin-like MnCrOx catalyst for the selective catalytic reduction of NOx with NH3.

Authors :
Liu, Yuan-zhen
Guo, Rui-tang
Duan, Chao-peng
Wu, Gui-lin
Miao, Yu-fang
Gu, Jing-wen
Pan, Wei-guo
Source :
Fuel. Jul2020, Vol. 271, pN.PAG-N.PAG. 1p.
Publication Year :
2020

Abstract

• MnCrO x -UL shows superior NH 3 -SCR performance and high resistance to SO 2. • More ad-NH 3 and ad-NO x species are available on the surface of MnCrO x -UL. • The ad-NH 3 and ad-NO x species over MnCrO x -UL are of higher reactivity. A novel urchin-like catalyst (MnCrO x -UL) was successfully synthesized by hydrothermal redox reaction. In addition, a reference sample (MnCrO x) was prepared by co-precipitation process for comparison. Experimental results revealed that MnCrO x -UL showed superior NH 3 -SCR performance in the temperature range of 150–350 °C and high resistance to SO 2. The results of characterization demonstrated that MnCrO x -UL showed larger surface area, more acidic sites, higher redox capacity and more oxygen vacancies compared with MnCrO x. Additionally, more activated adsorbed species over MnCrO x -UL sample surface could also effectively improve the NH 3 -SCR performance at low temperature. [ABSTRACT FROM AUTHOR]

Details

Language :
English
ISSN :
00162361
Volume :
271
Database :
Academic Search Index
Journal :
Fuel
Publication Type :
Academic Journal
Accession number :
142536264
Full Text :
https://doi.org/10.1016/j.fuel.2020.117667