Chapter 83. Selective Catalytic Reduction and No, Storage in Vehicle Emission Control

  1. Edgar Lara-Curzio and
  2. Michael J. Readey
  1. Eric N. Coker,
  2. Sonia Hammache,
  3. Donovan A. Pefia and
  4. James E. Miller

Published Online: 26 MAR 2008

DOI: 10.1002/9780470291184.ch83

28th International Conference on Advanced Ceramics and Composites A: Ceramic Engineering and Science Proceedings, Volume 25, Issue 3

28th International Conference on Advanced Ceramics and Composites A: Ceramic Engineering and Science Proceedings, Volume 25, Issue 3

How to Cite

Coker, E. N., Hammache, S., Pefia, D. A. and Miller, J. E. (2004) Selective Catalytic Reduction and No, Storage in Vehicle Emission Control, in 28th International Conference on Advanced Ceramics and Composites A: Ceramic Engineering and Science Proceedings, Volume 25, Issue 3 (eds E. Lara-Curzio and M. J. Readey), John Wiley & Sons, Inc., Hoboken, NJ, USA. doi: 10.1002/9780470291184.ch83

Author Information

  1. Sandia National Laboratories, PO Box 5800, Albuquerque, NM 87185–1349, USA

Publication History

  1. Published Online: 26 MAR 2008
  2. Published Print: 1 JAN 2004

ISBN Information

Print ISBN: 9780470051498

Online ISBN: 9780470291184

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Keywords:

  • LNT;
  • EDI;
  • CIDI;
  • SCR;
  • NSR

Summary

Selective Catalytic Reduction with non-vanadia catalyst formulations has been studied for NOX abatement using ammonia as the reductant. Laboratory testing has been carried out on both powder and monolithic catalysts using simulated vehicle exhaust Performance as a function of temperature, NO:NO2 ratio and space velocity has been monitored. Catalysts comprising transition metals supported on a titania-based substrate, in both powder and monolithic form, exhibit high NOX conversion with minimal N2O production over a wide range of conditions, and have shown resistance to hydrothermal ageing, low-level SOX ageing and residual hydrocarbons in the feed stream.

In separate studies, the NOX storage-reduction properties of two representative formulations based on Pt/BaO/Al2O3, and the influence thereon of CO and CO2 are discussed in detail, with particular attention to the uptake and release dynamics of NOX.