Navegar

Colección

Datos Estadísticas

Artículo

Estamos trabajando para incorporar este artículo al repositorio
Consulte el artículo en la página del editor
Consulte la política de Acceso Abierto del editor

Abstract:

Supported base metal catalysts were tested for the preferential oxidation of CO (CO PROX). The catalysts we investigated covered a wide range of transition metals (Co, Cr, Cu, Ni, Zn) supported on oxides with very different acidic, basic and redox properties (MgO, La2O3, SiO 2-Al2O3, CeO2, Ce 0.63Zr0.37O2). The influence of the metal loading (Cu), the support properties (acidity, basicity, redox, surface area) and the reaction conditions (reaction temperature, feed composition) on the catalyst activity and selectivity was evaluated. The activity of ceria and ceria-zirconia supported copper catalysts was comparable to the performances of noble metal samples classically used for the PROX reaction. In addition, Cu-CeO2 catalysts showed a practically constant and high selectivity towards CO oxidation in the temperature range of 50-150°C. Due to the strong synergetic effect between copper and ceria, only a small amount of copper (0.3 wt.%) was necessary to get an active catalyst. The best catalytic performances were obtained for the samples containing 1-3 wt.% copper. The presence of small copper particles in close interaction with the ceria support was shown to be responsible for the enhanced activity. Except for the hydrogen oxidation, no parallel reactions (CO or CO2 methanation reactions, coking, RWGS) could be detected over these catalysts. Classically, an increase of the oxygen excess led to an increased CO conversion with a simultaneous loss of selectivity towards CO2. Finally, the presence of CO2 in the feed negatively affected the catalytic activity. This effect was attributed to the adsorption of CO2 on the copper sites, probably as CO. © 2004 Elsevier B.V. All rights reserved.

Registro:

Documento: Artículo
Título:Supported base metal catalysts for the preferential oxidation of carbon monoxide in the presence of excess hydrogen (PROX)
Autor:Mariño, F.; Descorme, C.; Duprez, D.
Filiación:LACCO-UMR 6503, CNRS-Université de Poitiers, 40 Avenue du Recteur Pineau, F-86022 Poitiers Cedex, France
Lab. de Procesos Catalíticos, DIQ-FIUBA, Ciudad Universitaria, 1428 Buenos Aires, Argentina
Inst. de Recherches Sur la Catalyse, CNRS, 2 Avenue Albert Einstein, F-69626 Villeurbanne Cedex, France
Palabras clave:Base metals; Ceria; Copper; Fuel cells; Hydrogen purification; Oxygen mobility; Preferential oxidation of CO; PROX; Redox; Supported catalysts; Alkalinity; Carbon monoxide; Catalyst activity; Copper; Oxidation; Oxides; Redox reactions; Active catalysts; Metal catalysts; Preferential oxidation; Surface area; Catalysts; Lucia limbaria; Sio
Año:2005
Volumen:58
Número:3-4
Página de inicio:175
Página de fin:183
DOI: http://dx.doi.org/10.1016/j.apcatb.2004.12.008
Título revista:Applied Catalysis B: Environmental
Título revista abreviado:Appl. Catal. B Environ.
ISSN:09263373
CODEN:ACBEE
Registro:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_09263373_v58_n3-4_p175_Marino

Referencias:

  • Oh, S., Sinkevitch, R., (1993) J. Catal., 142, p. 254
  • Son, I., Shamsuzzoha, M., Lane, M., (2002) J. Catal., 210, p. 460
  • Snytnikov, P., Sobyanin, V., Belyaev, V., Tsyrulnikov, P., Shitova, N., Shlyapin, D., (2003) Appl. Catal. A: Gen., 239, p. 149
  • Mariño, F., Descorme, C., Duprez, D., (2004) Appl. Catal. B: Environ., 54, p. 59
  • Haruta, M., (1997) Catal. Today, 36, p. 153
  • Schubert, M., Venugopal, A., Kahlich, M., Plzak, V., Behm, R., (2004) J. Catal., 222, p. 32
  • Costello, C., Yang, J., Law, H., Wang, Y., Lin, J., Marks, L., Kung, M., Kung, H., (2003) Appl. Catal. A: Gen., 243, p. 15
  • Liu, W., Sarofin, A., Flytzani-Stephanopoulos, M., (1994) Appl. Catal. B: Environ., 4, p. 167
  • Huang, T., Yu, T., (1991) Appl. Catal., 72, p. 275
  • Zhang, S., Huang, W., Qiu, X., Li, B., Zheng, X., Wu, S., (2002) Catal. Lett., 80 (1-2), p. 41
  • Avgouropoulos, G., Ioannides, T., (2003) Appl. Catal. A: Gen., 244, p. 155
  • Wang, J., Shih, W., Huang, T., (2000) Appl. Catal. A: Gen., 203, p. 191
  • Kim, D., Cha, J., (2003) Catal. Lett., 86 (1-3), p. 107
  • Wang, J., Tsai, D., Huang, T., (2002) J. Catal., 208, p. 370
  • Kandoi, S., Gokhale, A., Grabow, L., Dumesic, J., Mavrikakis, M., (2004) Catal. Lett., 93 (1-2), p. 93
  • Shan, W., Shen, W., Li, C., (2003) Chem. Mater., 15, p. 4761
  • Madier, Y., Descorme, C., Le Govic, A.M., Duprez, D., (1999) J. Phys. Chem. B, 103, p. 10999
  • Liu, W., Flytzani-Stephanopoulos, M., (1995) J. Catal., 153, p. 304
  • Liu, W., Flytzani-Stephanopoulos, M., (1995) J. Catal., 153, p. 317
  • Liu, Y., Fu, Q., Stephanopoulos, M.F., (2004) Catal. Today, 93-95, p. 246
  • Xiaoyuan, J., Guanglie, L., Renxian, Z., Jianxin, M., Yu, C., Xiaoming, Z., (2001) Appl. Surf. Sci., 173, p. 208
  • Luo, M., Zhong, Y., Yuan, X., Zheng, X., (1997) Appl. Catal. A: Gen., 162, p. 121
  • Ratnasamy, P., Srinivas, D., Satyanarayana, C., Manikandan, P., Senthil Kumaran, R., Sachin, M., Shetti, V., (2004) J. Catal., 221, p. 455
  • Martinez-Arias, A., Fernández-García, M., Soria, J., Conesa, J., (1999) J. Catal., 182, p. 367
  • Martinez-Arias, A., Fernández-García, M., Gálvez, O., Coronado, J., Anderson, J., Conesa, J., Soria, J., Munuera, G., (2000) J. Catal., 195, p. 207
  • Wang, J., Lin, S., Huang, T., (2002) Appl. Catal. A: Gen., 232, p. 107
  • Jernigan, G., Somorjai, G., (1994) J. Catal., 147, p. 567
  • Kacimi, S., Barbier Jr., J., Taha, R., Duprez, D., (1993) Catal. Lett., 22, p. 343
  • Kundakovic, Lj., Flytzani-Stephanopoulos, M., (1998) Appl. Catal. A: Gen., 171, p. 13
  • Martin, D., Duprez, D., (1996) J. Phys. Chem., 100, p. 9429
  • Martin, D., (1994), Ph.D. Thesis, Poitiers University; Osinga, Th., Linsen, B., Van Beek, W., (1967) J. Catal., 7, p. 277
  • Dvorak, B., Pasek, J., (1970) J. Catal., 18, p. 108
  • Evans, J., Wainwright, M., Bridgwater, A., Young, D., (1983) Appl. Catal., 7, p. 75
  • Li, Y., Fu, Q., Flytzani-Stephanopoulos, M., (2000) Appl. Catal. B: Environ., 27, p. 179
  • Avgouropoulos, G., Ioannides, T., Matralis, H., Batista, J., Hocevar, S., (2001) Catal. Lett., 73, p. 33
  • Avgouropoulos, G., Ioannides, T., Papadopoulou, Ch., Batista, J., Hocevar, S., Matralis, H., (2002) Catal. Today, 75, p. 157
  • Sedmak, G., Hocevar, S., Levec, J., (2003) J. Catal., 213, p. 135
  • Mars, P., Van Krevelen, D., (1954) Chem. Eng. Sci., 3, p. 41
  • Bernal, S., Calvino, J.J., Cifredo, G.A., Rodriguez-Izquierdo, J.M., Perrichon, V., Laachir, A., (1992) J. Catal., 137, p. 1
  • Dong, L., Hu, Y., Shen, M., Jin, T., Wang, J., Ding, W., Chen, Y., (2001) Chem. Mater., 13, p. 4227
  • Park, P., Ledford, J., (1998) Catal. Lett., 50, p. 41
  • Huang, T., Tsai, D., (2003) Catal. Lett., 87 (3-4), p. 173
  • Fajardie, F., Tempère, J., Manoli, J., Touret, O., Blanchard, G., Djéga-Mariadassou, G., (1998) J. Catal., 179, p. 469

Citas:

---------- APA ----------
Mariño, F., Descorme, C. & Duprez, D. (2005) . Supported base metal catalysts for the preferential oxidation of carbon monoxide in the presence of excess hydrogen (PROX). Applied Catalysis B: Environmental, 58(3-4), 175-183.
http://dx.doi.org/10.1016/j.apcatb.2004.12.008
---------- CHICAGO ----------
Mariño, F., Descorme, C., Duprez, D. "Supported base metal catalysts for the preferential oxidation of carbon monoxide in the presence of excess hydrogen (PROX)" . Applied Catalysis B: Environmental 58, no. 3-4 (2005) : 175-183.
http://dx.doi.org/10.1016/j.apcatb.2004.12.008
---------- MLA ----------
Mariño, F., Descorme, C., Duprez, D. "Supported base metal catalysts for the preferential oxidation of carbon monoxide in the presence of excess hydrogen (PROX)" . Applied Catalysis B: Environmental, vol. 58, no. 3-4, 2005, pp. 175-183.
http://dx.doi.org/10.1016/j.apcatb.2004.12.008
---------- VANCOUVER ----------
Mariño, F., Descorme, C., Duprez, D. Supported base metal catalysts for the preferential oxidation of carbon monoxide in the presence of excess hydrogen (PROX). Appl. Catal. B Environ. 2005;58(3-4):175-183.
http://dx.doi.org/10.1016/j.apcatb.2004.12.008