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

38 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.

Funding

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.

Funders	Funder number
National Science Foundation (NSF)
Michigan State University-U.S. Department of Energy (MSU-DOE) Plant Research Laboratory	CBET-1258742
National Natural Science Foundation of China (NSFC)	21073024, 21373037, 21176037

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",

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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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