Storage and Reduction of NO x Over LNT Catalysts

被引：18
作者：
Forzatti, P. [1 ,2 ]
Lietti, L. [1 ,2 ]
Castoldi, L. [1 ,2 ]
机构：
[1] Politecn Milan, Lab Catalysis & Catalyt Proc, I-20133 Milan, Italy
[2] Politecn Milan, NEMAS, Dipartimento Energia, Ctr Excellence, I-20133 Milan, Italy
来源：
CATALYSIS LETTERS | 2015年 / 145卷 / 02期
关键词：
NOx storage reduction catalysts; Lean NOx trap; Pt-Ba catalysts; N2O formation; Isotopic exchange experiments; NOx reduction under lean conditions; LEAN NOX; STORED NOX; FT-IR; REGENERATION MECHANISM; SIMULTANEOUS REMOVAL; NITROGEN-OXIDES; SOOT COMBUSTION; TRAP CATALYST; NITRIC-OXIDE; DIESEL SOOT;
D O I：
10.1007/s10562-014-1343-0
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
In this paper, fundamental issues of the NSR technology are addressed. The reaction paths and the mechanism involved in the storage of NO (x) and the relevance of the proximity between the noble metal and the alkali or alkaline-earth component of the catalyst are discussed first. Then the release of NO (x) , the reaction pathways of NO (x) reduction by different reducing agents, and the mechanisms involved in the formation of N-2, NH3 and N2O are illustrated. The use of the combined technologies LNT + SCR and DPNR is addressed next and key aspects that highlight the synergies of the individual technologies are discussed. Finally, the perspectives of the NSR technology are outlined.
引用
收藏
页码：483 / 504
页数：22
相关论文
共 113 条
[21]   Formation and removal of Ba-carbonates or carboxylates on Pt/BaO/γ-Al2O3 lean NOx traps [J].
Chaugule, Saurabh S. ;
Kispersky, Vincent F. ;
Ratts, Joshua L. ;
Yezerets, Aleksey ;
Currier, Neal W. ;
Ribeiro, Fabio H. ;
Delgass, W. Nicholas .
APPLIED CATALYSIS B-ENVIRONMENTAL, 2011, 107 (1-2) :26-33
[22]   Pt dispersion effects during NOx storage and reduction on Pt/BaO/Al2O3 catalysts [J].
Clayton, Robert D. ;
Harold, Michael P. ;
Balakotaiah, Vemuri ;
Wan, C. Z. .
APPLIED CATALYSIS B-ENVIRONMENTAL, 2009, 90 (3-4) :662-676
[23]   NOx storage and reduction with H2 on Pt/BaO/Al2O3 monolith: Spatio-temporal resolution of product distribution [J].
Clayton, Robert D. ;
Harold, Michael P. ;
Balakotaiah, Vemuri .
APPLIED CATALYSIS B-ENVIRONMENTAL, 2008, 84 (3-4) :616-630
[24]   Cooperative effect of Pt-Rh/Ba/Al and CuZSM-5 catalysts for NOx reduction during periodic lean-rich atmosphere [J].
Corbos, E. C. ;
Haneda, M. ;
Courtois, X. ;
Marecot, P. ;
Dupruz, D. ;
Hamada, H. .
CATALYSIS COMMUNICATIONS, 2008, 10 (02) :137-141
[25]   NOx abatement for lean-burn engines under lean-rich atmosphere over mixed NSR-SCR catalysts: Influences of the addition of a SCR catalyst and of the operational conditions [J].
Corbos, E. C. ;
Haneda, M. ;
Courtois, X. ;
Marecot, P. ;
Duprez, D. ;
Hamada, H. .
APPLIED CATALYSIS A-GENERAL, 2009, 365 (02) :187-193
[26]   FTIR study of the interaction of NO, and propene with Pt/BaCl2/SiO2 [J].
Coronado, JM ;
Anderson, JA .
JOURNAL OF MOLECULAR CATALYSIS A-CHEMICAL, 1999, 138 (01) :83-96
[27]   Ammonia is a hydrogen carrier in the regeneration of Pt/BaO/Al2O3 NOx traps with H2 [J].
Cumaranatunge, L. ;
Mulla, S. S. ;
Yezerets, A. ;
Currier, N. W. ;
Delgass, W. N. ;
Ribeiro, F. H. .
JOURNAL OF CATALYSIS, 2007, 246 (01) :29-34
[28]   Cyclic Lean Reduction of NO by CO in Excess H2O on Pt-Rh/Ba/Al2O3: Elucidating Mechanistic Features and Catalyst Performance [J].
Dasari, Prasanna ;
Muncrief, Rachel ;
Harold, Michael P. .
TOPICS IN CATALYSIS, 2013, 56 (18-20) :1922-1936
[29]   In situ FTIR investigation of the role of surface isocyanates in the reduction of NOX by CO and C3H6 over model Pt/BaO/Al2O3 and Rh/BaO/Al2O3 NOX storage and reduction (NSR) catalysts [J].
DiGiulio, Christopher D. ;
Komvokis, Vasileios G. ;
Amiridis, Michael D. .
CATALYSIS TODAY, 2012, 184 (01) :8-19
[30]   Sulphur dioxide interaction with NOx storage catalysts [J].
Engström, P ;
Amberntsson, A ;
Skoglundh, M ;
Fridell, E ;
Smedler, G .
APPLIED CATALYSIS B-ENVIRONMENTAL, 1999, 22 (04) :L241-L248
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