Lean NOx Reduction in Two Stages: Non-thermal Plasma Followed by Heterogeneous Catalysis

October 16, 2000

Conference Paper

Lean NOx Reduction in Two Stages: Non-thermal Plasma Followed by Heterogeneous Catalysis

Abstract

We present data in this paper showing that non-thermal plasma in combination with heterogeneous catalysis is a promising technique for the treatment of NOx in diesel exhaust. Using a commonly available zeolite catalyst, sodium Y, to treat synthetic diesel exhaust we report approximately 50% chemical reduction of NOx over a broad, representative temperature range. We have measured the overall efficiency as a function of the temperature and hydrocarbon concentration. The direct detection of N2 and N2O when the background gas is replaced by helium confirms that true chemical reduction is occurring.

Revised: August 16, 2005 | Published: October 16, 2000

Citation

Tonkyn R.G., I.S. Yoon, S.E. Barlow, A.G. Panov, A. Kolwaite, and M.L. Balmer. 2000. Lean NOx Reduction in Two Stages: Non-thermal Plasma Followed by Heterogeneous Catalysis. In Non-thermal plasma, 35-42. Baltimore, Maryland:Society of Automotive Engineers Technical Paper Series. PNNL-SA-33611.