Ambient Temperature Hydrocarbon Selective Catalytic Reduction of NOx Using Atmospheric Pressure Nonthermal Plasma Activation of a Ag/Al2O3 Catalyst

Cristina E. Stere, Wameedh Adress, Robbie Burch, Sarayute Chansai, Alexandre Goguet, William G. Graham*, Fabio De Rosa, Vincenzo Palma, Christopher Hardacre

*Corresponding author for this work

Research output: Contribution to journalArticle

50 Citations (Scopus)
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Abstract

Atmospheric pressure nonthermal-plasma-activated catalysis for the removal of NOx using hydrocarbon selective catalytic reduction has been studied utilizing toluene and n-octane as the hydrocarbon reductant. When the plasma was combined with a Ag/Al2O3 catalyst, a strong enhancement in activity was observed when compared with conventional thermal activation with high conversions of both. NOx and hydrocarbons obtained at temperature at temperature ≤250 °C, where the silver catalyst is normally inactive. Importantly, even in the absence of an external heat source, significant activity was obtained. This low temperature activity provides the basis for applying nonthermal plasmas to activate emission control catalysts during cold start conditions, which remains an important issue for mobile and stationary applications.

Original languageEnglish
Pages (from-to)666-673
Number of pages8
JournalACS Catalysis
Volume4
Issue number2
Early online date10 Jan 2014
DOIs
Publication statusPublished - 2014

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