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Citation Details
Title:
Sulfur poisoning and desulfation of the lean NOx trap
Category(s):
Lean-NOx traps
Author(s):
J. Li
J. R. Theis
W. Chun
C. T. Goralski
R. J. Kudla
W. L. Watkins
R. H. Hurley
Conference:
SAE Future Transportation Technology Conference and Exposition
Publisher:
Society of Automotive Engineers, Inc., Warrendale, Pennsylvania, USA
Year:
2001
Volume:
0
Abstract:
Lean NOx traps (LNT) are currently the technology of choice for treating the NOx emissions from lean-burn gasoline engines. With the help of the newly established low sulfur fuel to be introduced in the European and the U.S. markets, the widespread application of LNT technology becomes more promising. However, we found that the sulfur tolerance of aged LNTs is much lower than that of the fresh LNTs. Moreover, the aged LNTs are more difficult to be desulfated relative to the fresh ones. The robustness of the LNT still needs to be improved. This work is focused on understanding the fundamental processes of sulfur poisoning and desulfation as the trap ages. Three LNT samples were selected from different suppliers. These samples were subject to different aging conditions. Flow reactor and pulse flame combustor tests were conducted on the samples to evaluate their performances with regard to sulfur poisoning and desulfation. The samples were further characterized using different techniques including TPR, H
Times Viewed:
2553
Submitter Details
Name:
Vitaly Prikhodko
Email:
prikhodkovy@ornl
Organization:
Oak Ridge National Laboratory
Date Submitted:
2002-09-13

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