Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
52265 | Catalysis Communications | 2008 | 5 Pages |
Abstract
Deactivation of a low temperature selective catalytic reduction (SCR) catalyst, 1 wt% V2O5/AC, by potassium chloride (KCl) is studied using BET and pore size distribution measurements, NH3 sorption and temperature-programmed desorption (TPD), temperature-programmed surface reaction (TPSR). Results show that KCl deactivates 1 wt%V2O5/AC’s SCR activity and the deactivation become severer at higher KCl loadings. The deactivation is not caused by pore plugging but by neutralization of acid sites on V2O5/AC. Weak acid sites are responsible for NH3 activation and SCR of NO, and are preferentially deactivated by KCl.
Related Topics
Physical Sciences and Engineering
Chemical Engineering
Catalysis
Authors
Xianlong Zhang, Zhanggen Huang, Zhenyu Liu,