Spectrokinetic Analysis of the NOx Storage Over a Pt-Ba/Al2O3 Lean NOx Trap Catalyst

被引：13
|
作者：
Visconti, Carlo Giorgio [1 ]
Lietti, Luca [1 ]
Manenti, Flavio [2 ]
Daturi, Marco [3 ]
Corbetta, Michele [2 ]
Pierucci, Sauro [2 ]
Forzatti, Pio [1 ]
机构：
[1] Politecn Milan, Dipartimento Energia, I-20133 Milan, Italy
[2] Politecn Milan, Dipartimento Chim Mat & Ingn Chim Giulio Natta, I-20133 Milan, Italy
[3] Univ Caen, Lab Catalyse & Spectrochim, ENSICAEN, CNRS, F-14050 Caen, France
来源：
TOPICS IN CATALYSIS | 2013年 / 56卷 / 1-8期
关键词：
Spectrokinetic; NOx storage-reduction; Operando spectroscopy; Kinetic; Lean NOx trap; OXIDATION; PT/AL2O3;
D O I：
10.1007/s11244-013-9972-x
中图分类号：
O69 [应用化学];
学科分类号：
081704 ;
摘要：
In this work the kinetics of the (reactive) lean accumulation phase of the NOx storage-reduction process is described through a detailed kinetic model, involving both the gas-phase molecules and the adsorbed species. Kinetic data have been collected following a novel approach based on simultaneous operando spectroscopic measurements and on-line pulse reactor effluent analysis. To our knowledge, this is the first time the temporal evolutions of the concentration of both the surface and the gas species are used jointly to describe the kinetic of a transient catalytic process.
引用
收藏
页码：311 / 316
页数：6
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