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论文类型：期刊论文

发表时间：2015-11-01

发表刊物：2nd China-USA Symposium on Energy

收录刊物：SCIE、CPCI-S、Scopus

卷号：256

期号：P1

页面范围：115-123

ISSN号：0920-5861

关键字：Transition metal oxide; NOx storage-reduction; LNT catalyst; Non thermal plasma

摘要：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 H-2-plasma in the rich phase to assist reduction of the stored NOx, the NOx conversion was greatly improved, especially at low temperature. (C) 2015 Elsevier B.V. All rights reserved.