Non-thermal plasma-assisted NOx storage and reduction on a LaMn0.9Fe0.1O3 perovskite catalyst

Chuan Shi; Zhao Shun Zhang; Mark Crocker; Li Xu; Chun Yan Wang; Chaktong Au; Ai Min Zhu

doi:10.1016/j.cattod.2013.03.008

Non-thermal plasma-assisted NO_x storage and reduction on a LaMn_0.9Fe_0.1O₃ perovskite catalyst

Chuan Shi, Zhao Shun Zhang, Mark Crocker, Li Xu, Chun Yan Wang, Chaktong Au, Ai Min Zhu

Chemistry

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

45 Scopus citations

Abstract

Based on its high NO_x storage capacity (NSC), a study of the properties of LaMn_0.9Fe_0.1O₃ in NO_x storage-reduction catalysis was undertaken. The microstructure of the LaMn _0.9Fe_0.1O₃ catalyst was characterized by XRD, XPS and H₂-TPR techniques and compared with that of LaMnO ₃. The role of Fe doping in LaMnO₃ on the perovskite structure and on NO_x storage capacity was clarified. Though the LaMn_0.9Fe_0.1O₃ perovskite has high NSC values even at relatively low temperature (<300 C), it shows much lower activity during lean-rich cycling compared with a traditional Pt/BaO/Al₂O ₃ catalyst, indicating that regeneration of stored NO_x is the rate limiting step for the perovskite catalyst. By employing an H ₂-plasma in the rich phase to assist reduction of the stored NO _x, the NO_x conversion is greatly improved, especially at low temperature. The results of the present study show that by combining the high NO_x storage capacity of the perovskite in the lean phase with non-thermal plasma-assisted activation of the reductant in the rich phase, high NO_x conversion can be obtained at low temperature.

Original language	English
Pages (from-to)	96-103
Number of pages	8
Journal	Catalysis Today
Volume	211
DOIs	https://doi.org/10.1016/j.cattod.2013.03.008
State	Published - Aug 1 2013

Bibliographical note

Funding Information:
The work was supported by the National Natural Foundation of China (nos. 20573014 , 20673016 and 21073024 ), Natural Science Foundation of Liaoning Province (no. 201102034 ) and by the Program for New Century Excellent Talents in University ( NCET-07-0136 ), as well as by the Fundamental Research Funds for the Central Universities (no. DUT12LK23 ).

Funding

The work was supported by the National Natural Foundation of China (nos. 20573014 , 20673016 and 21073024 ), Natural Science Foundation of Liaoning Province (no. 201102034 ) and by the Program for New Century Excellent Talents in University ( NCET-07-0136 ), as well as by the Fundamental Research Funds for the Central Universities (no. DUT12LK23 ).

Funders	Funder number
National Natural Science Foundation of China (NSFC)	20573014, 21073024, 20673016
Program for New Century Excellent Talents in University	NCET-07-0136
Natural Science Foundation of Liaoning Province	201102034
Fundamental Research Funds for the Central Universities

Keywords

H-plasma
LNT catalyst
LaMnFeO
NO storage
Non-thermal plasma
Perovskite

ASJC Scopus subject areas

Catalysis
General Chemistry

Access to Document

10.1016/j.cattod.2013.03.008

Cite this

@article{bc5e4f5a45034011b96a6c72125337a4,

title = "Non-thermal plasma-assisted NOx storage and reduction on a LaMn0.9Fe0.1O3 perovskite catalyst",

abstract = "Based on its high NOx storage capacity (NSC), a study of the properties of LaMn0.9Fe0.1O3 in NOx storage-reduction catalysis was undertaken. The microstructure of the LaMn 0.9Fe0.1O3 catalyst was characterized by XRD, XPS and H2-TPR techniques and compared with that of LaMnO 3. The role of Fe doping in LaMnO3 on the perovskite structure and on NOx storage capacity was clarified. Though the LaMn0.9Fe0.1O3 perovskite has high NSC values even at relatively low temperature (<300 C), it shows much lower activity during lean-rich cycling compared with a traditional Pt/BaO/Al2O 3 catalyst, indicating that regeneration of stored NOx is the rate limiting step for the perovskite catalyst. By employing an H 2-plasma in the rich phase to assist reduction of the stored NO x, the NOx conversion is greatly improved, especially at low temperature. The results of the present study show that by combining the high NOx storage capacity of the perovskite in the lean phase with non-thermal plasma-assisted activation of the reductant in the rich phase, high NOx conversion can be obtained at low temperature.",

keywords = "H-plasma, LNT catalyst, LaMnFeO, NO storage, Non-thermal plasma, Perovskite",

author = "Chuan Shi and Zhang, {Zhao Shun} and Mark Crocker and Li Xu and Wang, {Chun Yan} and Chaktong Au and Zhu, {Ai Min}",

note = "Funding Information: The work was supported by the National Natural Foundation of China (nos. 20573014 , 20673016 and 21073024 ), Natural Science Foundation of Liaoning Province (no. 201102034 ) and by the Program for New Century Excellent Talents in University ( NCET-07-0136 ), as well as by the Fundamental Research Funds for the Central Universities (no. DUT12LK23 ).",

year = "2013",

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language = "English",

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T1 - Non-thermal plasma-assisted NOx storage and reduction on a LaMn0.9Fe0.1O3 perovskite catalyst

AU - Shi, Chuan

AU - Zhang, Zhao Shun

AU - Crocker, Mark

AU - Xu, Li

AU - Wang, Chun Yan

AU - Au, Chaktong

AU - Zhu, Ai Min

N1 - Funding Information: The work was supported by the National Natural Foundation of China (nos. 20573014 , 20673016 and 21073024 ), Natural Science Foundation of Liaoning Province (no. 201102034 ) and by the Program for New Century Excellent Talents in University ( NCET-07-0136 ), as well as by the Fundamental Research Funds for the Central Universities (no. DUT12LK23 ).

PY - 2013/8/1

Y1 - 2013/8/1

N2 - Based on its high NOx storage capacity (NSC), a study of the properties of LaMn0.9Fe0.1O3 in NOx storage-reduction catalysis was undertaken. The microstructure of the LaMn 0.9Fe0.1O3 catalyst was characterized by XRD, XPS and H2-TPR techniques and compared with that of LaMnO 3. The role of Fe doping in LaMnO3 on the perovskite structure and on NOx storage capacity was clarified. Though the LaMn0.9Fe0.1O3 perovskite has high NSC values even at relatively low temperature (<300 C), it shows much lower activity during lean-rich cycling compared with a traditional Pt/BaO/Al2O 3 catalyst, indicating that regeneration of stored NOx is the rate limiting step for the perovskite catalyst. By employing an H 2-plasma in the rich phase to assist reduction of the stored NO x, the NOx conversion is greatly improved, especially at low temperature. The results of the present study show that by combining the high NOx storage capacity of the perovskite in the lean phase with non-thermal plasma-assisted activation of the reductant in the rich phase, high NOx conversion can be obtained at low temperature.

AB - Based on its high NOx storage capacity (NSC), a study of the properties of LaMn0.9Fe0.1O3 in NOx storage-reduction catalysis was undertaken. The microstructure of the LaMn 0.9Fe0.1O3 catalyst was characterized by XRD, XPS and H2-TPR techniques and compared with that of LaMnO 3. The role of Fe doping in LaMnO3 on the perovskite structure and on NOx storage capacity was clarified. Though the LaMn0.9Fe0.1O3 perovskite has high NSC values even at relatively low temperature (<300 C), it shows much lower activity during lean-rich cycling compared with a traditional Pt/BaO/Al2O 3 catalyst, indicating that regeneration of stored NOx is the rate limiting step for the perovskite catalyst. By employing an H 2-plasma in the rich phase to assist reduction of the stored NO x, the NOx conversion is greatly improved, especially at low temperature. The results of the present study show that by combining the high NOx storage capacity of the perovskite in the lean phase with non-thermal plasma-assisted activation of the reductant in the rich phase, high NOx conversion can be obtained at low temperature.

KW - H-plasma

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