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

doi:10.1016/j.cattod.2015.03.012

Pt-free, non-thermal plasma-assisted NO_x 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

Chemistry

Research output: Contribution to journal › Article › peer-review

36 Scopus citations

Abstract

Based on their high NO_x storage capacities (NSCs), a series of M/Ba/Al (M = Mn, Fe, Co, Ni, Cu) catalysts were evaluated in NO_x 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 NO_x 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 NO_x, the NO_x conversion was greatly improved, especially at low temperature.

Original language	English
Pages (from-to)	115-123
Number of pages	9
Journal	Catalysis Today
Volume	256
Issue number	P1
DOIs	https://doi.org/10.1016/j.cattod.2015.03.012
State	Published - 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

Access to Document

10.1016/j.cattod.2015.03.012

Cite this

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

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.",

keywords = "LNT catalyst, NO storage-reduction, Non-thermal plasma, Transition metal oxide",

author = "Zhang, {Zhao Shun} and Mark Crocker and Chen, {Bing Bing} and Bai, {Zhi Feng} and Wang, {Xin Kui} and Chuan Shi",

note = "Publisher Copyright: {\textcopyright} 2015 Elsevier B.V.",

year = "2015",

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doi = "10.1016/j.cattod.2015.03.012",

language = "English",

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T1 - Pt-free, non-thermal plasma-assisted NOx storage and reduction over M/Ba/Al2O3 (M = Mn, Fe, Co, Ni, Cu) catalysts

AU - Zhang, Zhao Shun

AU - Crocker, Mark

AU - Chen, Bing Bing

AU - Bai, Zhi Feng

AU - Wang, Xin Kui

AU - Shi, Chuan

PY - 2015/8/22

Y1 - 2015/8/22

N2 - 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.

AB - 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.

KW - LNT catalyst

KW - NO storage-reduction

KW - Non-thermal plasma

KW - Transition metal oxide

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