Influence of ageing, silver loading and type of reducing agent on the lean NOx reduction over Ag-Al2O3 catalysts
Journal article, 2013
The influence of ageing temperature, silver
loading and type of reducing agent on the lean NOx
reduction over silver–alumina catalysts was investigated
with n-octane and bio-diesel (NExBTL) as reducing agent.
The catalysts (2 and 6 wt% Ag–Al2O3) were prepared with
a sol–gel method including freeze drying and the evaluation
of NOx reduction and aging were performed using a
synthetic gas-flow reactor. The results indicate a relatively high NOx reduction for both reducing agents. The hydrothermally treated 6 wt% Ag–Al2O3 sample displays a
maximum NOx reduction of 78 % at 350 C for n-octane as
reductant and the corresponding value for NExBTL is
60 %. Furthermore, the catalysts show high durability and
an increase in activity for NOx reduction after ageing at
temperatures up to 650 C,with n-octane as reducing
agent.
n-octane
Ag–alumina
HC-SCR
bio-diesel
ageing
Author
Fredrik Gunnarsson
Competence Centre for Catalysis (KCK)
Chalmers, Chemical and Biological Engineering, Applied Surface Chemistry
Jenny-Yue Zheng
Chalmers, Chemical and Biological Engineering
Competence Centre for Catalysis (KCK)
Hannes Kannisto
Competence Centre for Catalysis (KCK)
Chalmers, Chemical and Biological Engineering, Applied Surface Chemistry
Clement Cid
Chalmers, Chemical and Biological Engineering
Anna Maria Lindholm
Volvo Group
Miroslawa Milh
Volvo Group
Magnus Skoglundh
Chalmers, Chemical and Biological Engineering, Applied Surface Chemistry
Competence Centre for Catalysis (KCK)
Hanna Härelind
Competence Centre for Catalysis (KCK)
Chalmers, Chemical and Biological Engineering, Applied Surface Chemistry
Topics in Catalysis
1022-5528 (ISSN) 1572-9028 (eISSN)
Vol. 56 1-8 416-420Driving Forces
Sustainable development
Areas of Advance
Nanoscience and Nanotechnology
Transport
Energy
Materials Science
Subject Categories
Chemical Process Engineering
Roots
Basic sciences
DOI
10.1007/s11244-013-9989-1