Pt-free, non-thermal plasma-assisted NOx storage and reduction over M/Ba/Al2O3 (M = Mn, Fe, Co, Ni, Cu) catalysts

Zhao Shun Zhang, Mark Crocker, Bing Bing Chen, Zhi Feng Bai, Xin Kui Wang, Chuan Shi

Research output: Contribution to journalArticlepeer-review

35 Scopus citations

Abstract

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.

Original languageEnglish
Pages (from-to)115-123
Number of pages9
JournalCatalysis Today
Volume256
Issue numberP1
DOIs
StatePublished - Aug 22 2015

Bibliographical note

Publisher Copyright:
© 2015 Elsevier B.V.

Keywords

  • LNT catalyst
  • NO storage-reduction
  • Non-thermal plasma
  • Transition metal oxide

ASJC Scopus subject areas

  • Catalysis
  • General Chemistry

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