In situ TG-MS study of NOx and soot removal over LNT model catalysts

被引：13
作者：
Cortes-Reyes, M. [1 ]
Herrera, M. C. [1 ]
Pieta, I. S. [1 ,2 ]
Larrubia, M. A. [1 ]
Alemany, L. J. [1 ]
机构：
[1] Campus Teatinos Univ Malaga, Fac Ciencias, Dept Ingn Quim, E-29071 Malaga, Spain
[2] Polish Acad Sci, Inst Phys Chem, PL-01224 Warsaw, Poland
来源：
APPLIED CATALYSIS A-GENERAL | 2016年 / 523卷
关键词：
Pt-Ba-K/Al2O3; catalyst; NOx removal; Soot removal; TRM-TG-DSC study; DIESEL PARTICULATE FILTERS; STORAGE/REDUCTION CATALYSTS; NSR CATALYSTS; TRAP CATALYST; REDUCTION; STORAGE; COMBUSTION; REGENERATION; PT-BA/AL2O3; OXIDATION;
D O I：
10.1016/j.apcata.2016.06.004
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：
The application of coupled thermogravimetric techniques allowed obtaining interesting information regarding NSR thermodynamic and kinetic for Pt-Ba/gamma-Al2O3, Pt-K/gamma-Al2O3 and Pt-Ba-K/gamma-Al2O3 catalysts. The materials have been tested for simultaneous NOx and soot removal according to standard TRM protocol and soot combustion runs. The catalysts presented high performance in the individualized reaction of NOx reduction, soot oxidation and the simultaneous NOx and PM removal. The apparent activation energy calculated follows the order: Pt-Ba > Pt-Ba-K > Pt-K for O-2 and NOx assisted soot combustion, being strongly influenced by the alkali element incorporation that shifts the maximum exothermal process to low temperature, improving the soot removal process. (C) 2016 Elsevier B.V. All rights reseived.
引用
收藏
页码：193 / 199
页数：7
相关论文
共 45 条
[1]   Role of Pt in Pt/Ba/Al2O3 NOx storage and reduction traps [J].
Anderson, JA ;
Bachiller-Baeza, B ;
Fernández-García, M .
PHYSICAL CHEMISTRY CHEMICAL PHYSICS, 2003, 5 (20) :4418-4427
[2]   Simultaneous removal of NOx and soot on Pt-Ba/Al2O3 NSR catalysts [J].
Castoldi, L ;
Matarrese, R ;
Lietti, L ;
Forzatti, P .
APPLIED CATALYSIS B-ENVIRONMENTAL, 2006, 64 (1-2) :25-34
[3]   Mechanistic aspects of the release and the reduction of NOx stored on Pt-Ba/Al2O3 [J].
Castoldi, L. ;
Righini, L. ;
Matarrese, R. ;
Lietti, L. ;
Forzatti, P. .
JOURNAL OF CATALYSIS, 2015, 328 :270-279
[4]   Silver-based catalytic materials for the simultaneous removal of soot and NOx [J].
Castoldi, Lidia ;
Aneggi, Eleonora ;
Matarrese, Roberto ;
Bonzi, Rossella ;
Llorca, Jordi ;
Trovarelli, Alessandro ;
Lietti, Luca .
CATALYSIS TODAY, 2015, 258 :405-415
[5]   Alkaline- and alkaline-earth oxides based Lean NOx Traps: Effect of the storage component on the catalytic reactivity [J].
Castoldi, Lidia ;
Lietti, Luca ;
Nova, Isabella ;
Matarrese, Roberto ;
Forzatti, Pio ;
Vindigni, Floriana ;
Morandi, Sara ;
Prinetto, Federica ;
Ghiotti, Giovanna .
CHEMICAL ENGINEERING JOURNAL, 2010, 161 (03) :416-423
[6]   Intrinsic reactivity of alkaline and alkaline-earth metal oxide catalysts for oxidation of soot [J].
Castoldi, Lidia ;
Matarrese, Roberto ;
Lietti, Luca ;
Forzatti, Pio .
APPLIED CATALYSIS B-ENVIRONMENTAL, 2009, 90 (1-2) :278-285
[7]   Intrinsic reactivity analysis of soot removal in LNT-catalysts [J].
Cortes-Reyes, Marina ;
Herrera, Concepcion ;
Angeles Larrubia, Maria ;
Alemany, Luis J. .
APPLIED CATALYSIS B-ENVIRONMENTAL, 2016, 193 :110-120
[8]   Various carbon dust particles Studies on thermal behaviour [J].
Eichholz, Sonja ;
Lerch, Martin ;
Heck, Michael ;
Walter, Dirk .
JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY, 2012, 110 (01) :437-441
[9]   The effect of exothermic reactions during regeneration on the NOX trapping efficiency of a NOX storage/reduction catalyst [J].
Epling, William S. ;
Yezerets, Aleksey ;
Currier, Neal W. .
CATALYSIS LETTERS, 2006, 110 (1-2) :143-148
[10]   Overview of the fundamental reactions and degradation mechanisms of NOx storage/reduction catalysts [J].
Epling, WS ;
Campbell, LE ;
Yezerets, A ;
Currier, NW ;
Parks, JE .
CATALYSIS REVIEWS-SCIENCE AND ENGINEERING, 2004, 46 (02) :163-245
12345