The influence of ceria and other rare earth promoters on palladium-based methane combustion catalysts

被引：56
作者：
Colussi, Sara [1 ]
Trovarelli, Alessandro [1 ]
Cristiani, Cinzia [2 ]
Lietti, Luca [3 ,4 ]
Groppi, Gianpiero [3 ,4 ]
机构：
[1] Univ Udine, Dipartimento Chim Fis & Ambiente, I-33100 Udine, Italy
[2] Politecn Milan, Dipartimento Chim Mat & Ingn Chim G Natta, I-20133 Milan, Italy
[3] Politecn Milan, Lab Catalysis & Catalyt Proc, Dipartimento Energia, I-20133 Milan, Italy
[4] Politecn Milan, Ctr Excellence, NEMAS, I-20133 Milan, Italy
来源：
CATALYSIS TODAY | 2012年 / 180卷 / 01期
关键词：
Ceria; Palladium; Catalytic combustion; Rare earths; SUPPORTED PALLADIUM; OXIDATION; PDO; OXIDES; TRANSFORMATION; DYNAMICS; CH4;
D O I：
10.1016/j.cattod.2011.03.021
中图分类号：
O69 [应用化学];
学科分类号：
081704 ;
摘要：
In this work we investigate the effect of ceria and other rare earths (La, Pr, Tb) on Pd-PdO transformation, which is strongly related to the catalytic activity of Pd-based catalysts for the combustion of methane at high temperature. Also the behavior of Pd on ZrO2 and on yttria-stabilized zirconia is considered for comparison. The catalysts are characterized by XRD and BET surface area measurements. Pd-PdO transformation is studied by means of temperature programmed oxidation measurements and thermo-gravimetric analysis. Temperature programmed combustion experiments have been carried out in order to compare catalytic activity of different catalysts. The results show that rare earth oxides promote the onset of Pd re-oxidation upon cooling, that for ceria doped sample is reflected in an improvement in the catalytic activity. (C) 2011 Elsevier B.V. All rights reserved.
引用
收藏
页码：124 / 130
页数：7
相关论文
共 32 条
[1]   Insights into the dynamics of oxygen storage/release phenomena in model ceria-zirconia catalysts as inferred from transient studies using H2, CO and soot as reductants [J].
Aneggi, E ;
Boaro, M ;
de Leitenburg, C ;
Dolcetti, G ;
Trovarelli, A .
CATALYSIS TODAY, 2006, 112 (1-4) :94-98
[2]   High catalytic activity and stability of Pd doped hexaaluminate catalysts for the CH4 catalytic combustion [J].
Baylet, A. ;
Royer, S. ;
Marecot, R. ;
Tatibouet, J. M. ;
Duprez, D. .
APPLIED CATALYSIS B-ENVIRONMENTAL, 2008, 77 (3-4) :237-247
[3]   Nanostructural evolution of high loading Rh/lanthana catalysts through the preparation and reduction steps [J].
Bernal, S ;
Calvino, JJ ;
López-Cartes, C ;
Pintado, JM ;
Pérez-Omil, JA ;
Rodríguez-Izquierdo, JM ;
Hayek, K ;
Rupprechter, G .
CATALYSIS TODAY, 1999, 52 (01) :29-43
[4]   INVESTIGATION OF THE ACTIVE STATE OF SUPPORTED PALLADIUM CATALYSTS IN THE COMBUSTION OF METHANE [J].
BURCH, R ;
URBANO, FJ .
APPLIED CATALYSIS A-GENERAL, 1995, 124 (01) :121-138
[5]   Catalytic, hybrid lean combustion for gas turbines [J].
Carroni, Richard ;
Griffin, Timothy .
CATALYSIS TODAY, 2010, 155 (1-2) :2-12
[6]   Catalytic combustion of methane over palladium-based catalysts [J].
Ciuparu, D ;
Lyubovsky, MR ;
Altman, E ;
Pfefferle, LD ;
Datye, A .
CATALYSIS REVIEWS-SCIENCE AND ENGINEERING, 2002, 44 (04) :593-649
[7]   The role of rare earth oxides as promoters and stabilizers in combustion catalysts [J].
Colussi, S ;
de Leitenburg, C ;
Dolcetti, G ;
Trovarelli, A .
JOURNAL OF ALLOYS AND COMPOUNDS, 2004, 374 (1-2) :387-392
[8]   The effect of CeO2 on the dynamics of Pd-PdO transformation over Pd/Al2O3 combustion catalysts [J].
Colussi, Sara ;
Trovarelli, Alessandro ;
Groppi, Gianpiero ;
Llorca, Jordi .
CATALYSIS COMMUNICATIONS, 2007, 8 (08) :1263-1266
[9]   Structure and morphology of Pd/Al2O3 and Pd/CeO2/Al2O3 combustion catalysts in Pd-PdO transformation hysteresis [J].
Colussi, Sara ;
Trovarelli, Alessandro ;
Vesselli, Erik ;
Baraldi, Alessandro ;
Comelli, Giovanni ;
Groppi, Gianpiero ;
Llorca, Jordi .
APPLIED CATALYSIS A-GENERAL, 2010, 390 (1-2) :1-10
[10]   Catalyst microstructure and methane oxidation reactivity during the Pd⇆PdO transformation on alumina supports [J].
Datye, AK ;
Bravo, J ;
Nelson, TR ;
Atanasova, P ;
Lyubovsky, M ;
Pfefferle, L .
APPLIED CATALYSIS A-GENERAL, 2000, 198 (1-2) :179-196
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