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.

HC-SCR

n-octane

Ag–alumina

bio-diesel

ageing

Author

Fredrik Gunnarsson

Competence Centre for Catalysis (KCK)

Chalmers, Chemical and Biological Engineering, Applied Surface Chemistry

Jenny-Yue Zheng

Competence Centre for Catalysis (KCK)

Chalmers, Chemical and Biological Engineering

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

Competence Centre for Catalysis (KCK)

Chalmers, Chemical and Biological Engineering, Applied Surface Chemistry

Hanna Härelind

Chalmers, Chemical and Biological Engineering, Applied Surface Chemistry

Competence Centre for Catalysis (KCK)

Topics in Catalysis

1022-5528 (ISSN) 1572-9028 (eISSN)

Vol. 56 1-8 416-420

Driving Forces

Sustainable development

Areas of Advance

Nanoscience and Nanotechnology (2010-2017)

Transport

Energy

Materials Science

Subject Categories

Chemical Process Engineering

Roots

Basic sciences

DOI

10.1007/s11244-013-9989-1

More information

Latest update

11/20/2018