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Effect of KCl on selective catalytic reduction of NO with NH3 over a V2O5/AC catalyst

Paper ID Volume ID Publish Year Pages File Format Full-Text
52265 46867 2008 5 PDF Available
Title
Effect of KCl on selective catalytic reduction of NO with NH3 over a V2O5/AC catalyst
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.

Keywords
V2O5/AC catalyst; Low temperature SCR; Deactivation; KCl
First Page Preview
Effect of KCl on selective catalytic reduction of NO with NH3 over a V2O5/AC catalyst
Publisher
Database: Elsevier - ScienceDirect
Journal: Catalysis Communications - Volume 9, Issue 5, 20 March 2008, Pages 842–846
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Catalysis