Based on their high NOx storage capacities (NSCs), a series of M/Ba/Al (M = Mn, Fe, Co, Ni, Cu) catalysts were evaluated in NOx storage-reduction catalysis. Although the M/Ba/Al catalysts exhibited high NSC values, they exhibited much lower activity during lean-rich cycling compared with a traditional Pt/Ba/Al catalyst, indicating that regeneration of stored NOx is the rate limiting step for the M/Ba/Al samples. By employing an H2-plasma in the rich phase to assist reduction of the stored NOx, the NOx conversion was greatly improved, especially at low temperature.
|Number of pages||9|
|State||Published - Aug 22 2015|
Bibliographical noteFunding Information:
The work was supported by the National Natural Foundation of China (Nos. 21373037 , 21073024 and 21176037 ). MC thanks the National Science Foundation and the U.S. Department of Energy (DOE) for financial support under award no. CBET-1258742 . However, any opinions, findings, conclusions, or recommendations expressed herein are those of the authors and do not necessarily reflect the views of the DOE.
© 2015 Elsevier B.V.
- LNT catalyst
- NO storage-reduction
- Non-thermal plasma
- Transition metal oxide
ASJC Scopus subject areas
- Chemistry (all)