Influence of the nature of the Ce-promoter on the behavior of Pd and Pd-Cr TWC systems. Iglesias-Juez, A, Martínez-Arias, A, Hungría, A B, Anderson, J A, Conesa, J C, Soria, J, & Fernández-García, M Applied Catalysis A: General, 259(2):207–220, Inst. Catalisis y Petroleoquimica, CSIC, Campus Cantoblanco, 28049 Madrid, Spain, 2004.
Influence of the nature of the Ce-promoter on the behavior of Pd and Pd-Cr TWC systems [link]Paper  abstract   bibtex   
A series of monometallic Pd and bimetallic Pd-Cr catalysts supported on CeOx/Al2O3 (CA) and (Ce, Zr)O x/Al2O3 (CZA) materials have been characterized using a combination of X-ray diffraction (XRD), electron microscopy, and Raman spectroscopy, and employing electron paramagnetic resonance and in situ diffuse reflectance Fourier transform infrared and X-ray near-edge structure spectroscopies to analyze the redox and chemical processes taking place under light-off conditions in a gaseous, stoichiometric mixture containing CO, NO, and O2. The catalytic behavior of these mono and bimetallic systems was strongly affected by the nature of the cerium-containing promoter. The Pd-ceria interface appeared significantly more active than Pd-ceria/zirconia in both CO oxidation and NO reduction processes under stoichiometric conditions. This factor seems to dominate the differential behavior of Pd monometallic systems. In the case of Pd-Cr bimetallic systems, an additional strong influence of the base metal on the oxidation state of Pd appears of importance in explaining the catalytic behavior of the samples. For the CeOx/Al2O3 supported catalyst, the formation of Pd(0) at lower temperatures leads to an initial enhancement in activity, while formation of a Pd-Cr alloy above 473K suppressed full NO conversion at high temperatures. These effects were absent in the (Ce, Zr)O x/Al2O3 supported system. © 2003 Elsevier B.V. All rights reserved.
@article{Iglesias-Juez2004a,
abstract = {A series of monometallic Pd and bimetallic Pd-Cr catalysts supported on CeOx/Al2O3 (CA) and (Ce, Zr)O x/Al2O3 (CZA) materials have been characterized using a combination of X-ray diffraction (XRD), electron microscopy, and Raman spectroscopy, and employing electron paramagnetic resonance and in situ diffuse reflectance Fourier transform infrared and X-ray near-edge structure spectroscopies to analyze the redox and chemical processes taking place under light-off conditions in a gaseous, stoichiometric mixture containing CO, NO, and O2. The catalytic behavior of these mono and bimetallic systems was strongly affected by the nature of the cerium-containing promoter. The Pd-ceria interface appeared significantly more active than Pd-ceria/zirconia in both CO oxidation and NO reduction processes under stoichiometric conditions. This factor seems to dominate the differential behavior of Pd monometallic systems. In the case of Pd-Cr bimetallic systems, an additional strong influence of the base metal on the oxidation state of Pd appears of importance in explaining the catalytic behavior of the samples. For the CeOx/Al2O3 supported catalyst, the formation of Pd(0) at lower temperatures leads to an initial enhancement in activity, while formation of a Pd-Cr alloy above 473K suppressed full NO conversion at high temperatures. These effects were absent in the (Ce, Zr)O x/Al2O3 supported system. © 2003 Elsevier B.V. All rights reserved.},
address = {Inst. Catalisis y Petroleoquimica, CSIC, Campus Cantoblanco, 28049 Madrid, Spain},
annote = {Cited By (since 1996): 12

        
Export Date: 15 January 2013

        
Source: Scopus

        
CODEN: ACAGE

        
doi: 10.1016/j.apcata.2003.09.020

        
Language of Original Document: English

        
Correspondence Address: Fern\'{a}ndez-Garc\'{\i}a, M.; Inst. Catalisis y Petroleoquimica, CSIC, Campus Cantoblanco, 28049 Madrid, Spain; email: m.fernandez@icp.csic.es

        
References: Lox, E.S.J., Engler, B.H., (1999) Environmental Catalysis, p. 1. , G. Ertl, H. Kn\"{o}zinger, J. Weitkamp (Eds.), Wiley, New York; 
Trovarelli, A., (2002) Catalysis by Ceria and Related Materials, , Imperial College Press, London; 
Fern\'{a}ndez-Garc\'{\i}a, M., Mart\'{\i}nez-Arias, A., Salamanca, L.N., Coronado, J.M., Anderson, J.A., Conesa, J.C., Soria, J., (1999) J. Catal., 187, p. 474; 
Luo, M.F., Zheng, X.M., (1999) Appl. Catal. A, 189, p. 15; 
Bera, P., Jayaram, V., Subbana, G.N., Hegde, M.S., (2000) J. Catal., 196, p. 293; 
Fern\'{a}ndez-Garc\'{\i}a, M., Mart\'{\i}nez-Arias, A., Iglesias-Juez, A., Hungr\'{\i}a, A.B., Anderson, J.A., Conesa, J.C., Soria, J., (2001) Appl. Catal. B, 31, p. 39; 
Priolkar, K.R., Bera, P., Saroda, P.R., Hegde, M.S., Emura, S., Kumashiro, R., Lalla, N.P., (2002) Chem. Mater., 14, p. 2120; 
Fern\'{a}ndez-Garc\'{\i}a, M., Mart\'{\i}nez-Arias, A., Belver, C., Anderson, J.A., Conesa, J.C., Soria, J., (2000) J. Catal., 190, p. 387; 
Holles, J.H., Davis, J.R., Murray, T.M., Howe, J.M., (2000) J. Catal., 195, p. 193; 
Mart\'{\i}nez-Arias, A., Fern\'{a}ndez-Garc\'{\i}a, M., Iglesias-Juez, A., Hungr\'{\i}a, A.B., Anderson, J.A., Conesa, J.C., Soria, J., (2001) Appl. Catal. B, 31, p. 51; 
Trovarelli, A., (1996) Catal. Rev. Sci. Eng., 38, p. 97; 
Ka\v{s}par, J., Fornasiero, P., Graziani, M., (1999) Catal. Today, 50, p. 351; 
Fern\'{a}ndez-Garc\'{\i}a, M., Mart\'{\i}nez-Arias, A., Iglesias-Juez, A., Belver, C., Hungr\'{\i}a, A.B., Conesa, J.C., Soria, J., (2000) J. Catal., 194, p. 385; 
Fern\'{a}ndez-Garc\'{\i}a, M., Mart\'{\i}nez-Arias, A., Iglesias-Juez, A., Belver, C., Hungr\'{\i}a, A.B., Conesa, J.C., Soria, J., (2002) Phys. Chem. Chem. Phys., 4, p. 2473; 
Van Yperen, R., Lindner, D., Mubmann, L., Lox, E.S., Kreuzer, T., (1998) Stud. Surf. Sci. Catal., 116, p. 51; 
Hu, Z., Wan, C.Z., Lui, Y.K., Dettling, J., Steger, J.J., (1996) Catal. Today, 30, p. 83; 
Skoglundh, M., Johansson, H., L\"{o}wendahl, L., Jansson, K., Dahl, L., Hirschauer, B., (1996) Appl. Catal. B, 7, p. 299; 
El Hamdaoui, A., Bergeret, G., Massadier, J., Primet, M., Renouprez, A.J., (1994) J. Catal., 148, p. 47; 
Coq, B., Figueras, F., (2001) J. Mol. Catal. A, 173, p. 117; 
Fern\'{a}ndez-Garc\'{\i}a, M., Mart\'{\i}nez-Arias, A., Iglesias-Juez, A., Hungr\'{\i}a, A.B., Anderson, J.A., Conesa, J.C., Soria, J., (2003) J. Catal., 214, p. 220; 
Mart\'{\i}nez-Arias, A., Fern\'{a}ndez-Garc\'{\i}a, M., Ballesteros, V., Salamanca, L.N., Otero, C., Conesa, J.C., Soria, J., (1999) Langmuir, 15, p. 4796; 
Fern\'{a}ndez-Garc\'{\i}a, M., M\'{a}rquez-Alvarez, C., Haller, G.L., (1995) J. Phys. Chem., 99, p. 12565; 
M\'{a}rquez-Alvarez, C., Rodr\'{\i}guez-Ramos, I., Guerrero-Ruiz, A., Haller, G.L., Fern\'{a}ndez-Garc\'{\i}a, M., (1997) J. Am. Chem. Soc., 119, p. 2905; 
Fern\'{a}ndez-Garc\'{\i}a, M., (2002) Catal. Rev. Sci. Eng., 44, p. 59; 
Malinowsky, E.R., (1991) Factor Analysis in Chemistry, , Wiley, New York; 
Weckhuysen, B.M., Wachs, I.E., (1997) J. Phys. Chem. B, 101, p. 2793; 
Grzybowska, B., Sloczynski, J., Grabowski, R., Wcislo, K., Kozlowska, A., Stoch, J., Zielinski, J., (1998) J. Catal., 178, p. 687; 
Cherian, M., Rao, M.S., Hirt, A.M., Wachs, I.E., Deo, G., (2002) J. Catal., 211, p. 482; 
Mcbridge, J.R., Kass, K.C., Weber, W.H., (1991) Phys. Rev. B, 44, p. 5016; 
Wang, D., Cleway, J.D., Flanegan, T.B., (2000) J. Alloys Compd., 325, p. 151; 
Lee, Y.S., Lim, K.Y., Whang, C.N., Jeon, Y., (2000) Appl. Phys. A, 70, p. 59; 
Sobczak, J.W., Sobczak, E., Kosinki, A., Bilinski, A., (2001) J. Alloys Compd., 328, p. 132; 
Fern\'{a}ndez-Garc\'{\i}a, M., Anderson, J.A., Haller, G.L., (1996) J. Phys. Chem., 100, p. 16247; 
Massalki, T.B., (1993) Binary Alloy Phase Diagram, Second Ed., 1. , ASM International, USA; 
Ellison, A., Diakun, G., Worthington, P., (1998) J. Mol. Catal., 46, p. 131; 
Pykavy, M., Staemmler, V., Seiferth, O., Freund, H.J., (2001) Surf. Sci., 479, p. 11. , and references therein; 
Xu, X., Goodman, D.W., (1993) J. Phys. Chem., 97, p. 7711; 
Bensalem, A., Muller, J.C., Tessier, D., Bozon-Verduraz, F., (1996) J. Chem. Soc., Faraday Trans., 92, p. 3233; 
Xu, X., Chen, P., Goodman, D.W., (1994) J. Phys. Chem., 98, p. 9242; 
Honkala, K., Pirila, P., Laasonen, K., (2001) Surf. Sci., 489, p. 72. , and references therein; 
Anderson, J.A., M\'{a}rquez-Alvarez, C., L\'{o}pez-Mu\~{n}oz, M.J., Rodr\'{\i}guez-Ramos, I., Guerrero-Ruiz, A., (1997) Appl. Catal. B, 14, p. 189; 
Solymosi, F., Bansagi, T., (1995) J. Catal., 156, p. 75. , and references therein; 
Rask\'{o}, J., Solymosi, F., (1981) J. Catal., 71, p. 219; 
Kameota, S., Chafit, T., Ukisu, Y., Miyadera, T., (1998) Catal. Lett., 55, p. 211; 
Rask\'{o}, J., Solymosi, F., (1984) J. Chem. Soc., Faraday Trans. I, 80, p. 1841; 
Mart\'{\i}nez-Arias, A., Fern\'{a}ndez-Garc\'{\i}a, M., Salamanca, L.N., Conesa, J.C., Soria, J., (2000) J. Phys. Chem. B, 104, p. 4038; 
Cordishi, D., Campa, M.C., Indovina, V., Occhiozzi, M., (1994) J. Chem. Soc., Faraday Trans., 90, p. 207; 
Zhu, Z., Hartmann, M., Maes, E.M., Czernuszevich, R.S., Kevan, L., (2000) J. Phys. Chem. B, 104, p. 4690; 
Mart\'{\i}nez-Arias, A., Fern\'{a}ndez-Garc\'{\i}a, M., Belver, C., Conesa, J.C., Soria, J., (2000) Catal. Lett., 65, p. 197; 
Mart\'{\i}nez-Arias, A., Hungr\'{\i}a, A.B., Fern\'{a}ndez-Garc\'{\i}a, M., Iglesias-Juez, A., Anderson, J.A., Conesa, J.C., J. Catal., , in press; 
Fern\'{a}ndez-Garc\'{\i}a, M., Mart\'{\i}nez-Arias, A., Iglesias-Juez, A., Hungr\'{\i}a, A.B., Anderson, J.A., Conesa, J.C., Soria, J., doi: 10.1016/S0021-9517(03)00277-XHoffman, J., Meusel, I., Hartmann, J., Libuda, J., Freund, H.-J., (2001) J. Catal., 204, p. 378; 
Tarasov, A.L., Przheval'skaya, L.K., Shevts, V.A., Kazanskii, V.B., (1989) Kinet. Catal., 29, p. 1020; 
Boaro, M., Leitenburg, C., Dolcetti, G., Trovarelli, A., (2000) J. Catal., 193, p. 338},
author = {Iglesias-Juez, A and Mart\'{\i}nez-Arias, A and Hungr\'{\i}a, A B and Anderson, J A and Conesa, J C and Soria, J and Fern\'{a}ndez-Garc\'{\i}a, M},
issn = {0926860X (ISSN)},
journal = {Applied Catalysis A: General},
keywords = {Bimetals,Catalysis,Emulsions,Gas emissions,Infrared spectroscopy,Materials science,Palladium,Principal component analysis,Raman spectroscopy,Synthesis (chemical),Three-way catalysts,X ray diffraction analysis,X-ray diffraction,X-ray near-edge structures,XANES},
number = {2},
pages = {207--220},
title = {{Influence of the nature of the Ce-promoter on the behavior of Pd and Pd-Cr TWC systems}},
url = {https://www.scopus.com/inward/record.url?eid=2-s2.0-1242287674&partnerID=40&md5=9e37407171058208414cec96cfd7aaf2},
volume = {259},
year = {2004}
}

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