Preparation, Structural Characterization And Catalytic Properties Of Co/ceo 2 Catalysts For The Steam Reforming Of Ethanol And Hydrogen Production

In this paper, Co/CeO 2 catalysts, with different cobalt contents were prepared by the polymeric precursor method and were evaluated for the steam reforming of ethanol. The catalysts were characterized by N 2 physisorption (BET method), X-ray diffraction (XRD), UV-visible diffuse reflectance, temperature programmed reduction analysis (TPR) and field emission scanning electron microscopy (FEG-SEM). It was observed that the catalytic behavior could be influenced by the experimental conditions and the nature of the catalyst employed. Physical-chemical characterizations revealed that the cobalt content of the catalyst influences the metal-support interaction which results in distinct catalyst performances. The catalyst with the highest cobalt content showed the best performance among the catalysts tested, exhibiting complete ethanol conversion, hydrogen selectivity close to 66% and good stability at a reaction temperature of 600 °C. © 2012 Elsevier B.V.216281289Kothari, R., Buddhi, D., Sawhney, R.L., (2008) Renew. Sustain Energy Rev., 12, pp. 553-563Joensen, F., Rostrup-Nielsen, J.R., (2002) J. Power Sources, 105, pp. 195-201Armor, J.N., (2005) Catal. Lett., 101, pp. 131-135Abbasi, T., Abbasi, S.A., (2011) Renew. Sustain Energy Rev., 15, pp. 3034-3040De Bruijn, F., (2005) Green Chem., 7, pp. 132-150Silveira, J.L., Braga, L.B., De Souza, A.C.C., Antunes, J.S., Zanzi, R., (2009) Renew. Sustain Energy Rev., 13, pp. 2525-2534Song, H., Ozkan, U.S., (2010) Int. J. Hydrogen Energy, 35, pp. 127-134Ramírez De La Piscina, P., Homs, N., (2008) Chem. Soc. Rev., 37, pp. 2459-2467Díaz Alvarado, F., Gracia, F., (2010) Chem. Eng. J., 165, pp. 649-657Mas, V., Kipreos, R., Amadeo, N., Laborde, M., (2006) Int. J. Hydrogen Energy, 31, pp. 21-28Haryanto, A., Fernando, S., Murali, N., Adhikari, S., (2005) Energy Fuels, 19, pp. 2098-2106Vaidya, P.D., Rodrigues, A.E., (2006) Chem. Eng. J., 117, pp. 39-49Ni, M., Leung, D.Y.C., Leung, M.K.H., (2007) Int. J. Hydrogen Energy, 32, pp. 3238-3247Bshish, A., Yaakob, Z., Narayanan, B., Ramakrishnan, R., Ebshish, A., (2011) Chem. Pap., 65, pp. 251-266Song, H., Tan, B., Ozkan, U.S., (2009) Catal. Lett., 132, pp. 422-429Siang, J.Y., Lee, C.C., Wang, C.H., Wang, W.T., Deng, C.Y., Yeh, C.T., (2010) Int. J. Hydrogen Energy, 35, pp. 3456-3462Wang, F., Cai, W., Provendier, H., Schuurman, Y., Descorme, C., Mirodatos, C., (2011) Int. J. Hydrogen Energy, 36, pp. 13566-13574Ye, J.L., Wang, Y.Q., Liu, Y., Wang, H., (2008) Int. J. Hydrogen Energy, 33, pp. 6602-6611Wang, H., Ye, J.L., Liu, Y., Li, Y.D., Qin, Y.N., (2007) Catal. Today, 129, pp. 305-312Nishiguchi, T., Matsumoto, T., Kanai, H., Utani, K., Matsumura, Y., Shen, W.J., (2005) Appl. Catal. A, 279, pp. 273-277Fajardo, H.V., Probst, L.F.D., Carreño, N.L.V., Garcia, I.T.S., Valentini, A., (2007) Catal. Lett., 119, pp. 228-236Wang, H., Liu, Y., Wang, L., Qin, Y.N., (2008) Chem. Eng. J., 145, pp. 25-31Laosiripojana, N., Assabumrungrat, S., (2006) Appl. Catal., 66 B, pp. 29-39Laosiripojana, N., Sutthisripok, W., Assabumrungrat, S., (2007) Chem. Eng. J., 127, pp. 31-38Liotta, L.F., Di Carlo, G., Pantaleo, G., Deganello, G., (2005) Catal. Commun., 6, pp. 329-336Song, H., Ozkan, U.S., (2009) J. Catal., 261, pp. 66-74Song, H., Zhang, L., Ozkan, U.S., (2010) Ind. Eng. Chem. Res., 49, pp. 8984-8989Bayram, B., Soykal, I.I., Von Deak, D., Miller, J.T., Ozkan, U.S., (2011) J. Catal., 284, pp. 77-89Rabelo, A.A., De MacEdo, M.C., Melo, D.M.A., Paskocimas, C.A., Martinelli, A.E., Do Nascimento, R.M., (2011) Mater. Res., 14, pp. 91-96Araújo, V.D., Bernardi, M.I.B., (2011) J. Therm. Anal. Calorim., 103, pp. 501-506Larson, A.C., Dreele, R.B.V., (1994) Los Alamos Natl. Lab. Rep. LAUR 86-748Wang, X., Rodriguez, J.A., Hanson, J.C., Gamarra, D., Martínez-Arias, A., Fernández-García, M., (2006) J. Phys. Chem., 110 B, pp. 428-434Kumar, S., Kim, Y.J., Koo, B.H., Choi, H., Lee, C.G., (2009) Trans. Magnetics, 45, pp. 2439-2441Shannon, R., (1976) Acta Crystallogr., 32 A, pp. 751-767Spanier, J.E., Robinson, R.D., Zhang, F., Chan, S.W., Herman, I.P., (2001) Phys. Rev., 64 B, pp. 245407-245414Bensalem, A., Muller, J.C., Bozon-Verduraz, F., (1992) J. Chem. Soc. Faraday Trans., 88, pp. 153-154Tang, C.W., Kuo, C.C., Kuo, M.C., Wang, C.B., Chien, S.H., (2006) Appl. Catal., 309 A, pp. 37-43Brik, Y., Kacimi, M., Ziyad, M., Bozon-Verduraz, F., (2001) J. Catal., 202, pp. 118-128Firsova, A.A., Khomenko, T.I., Il'Ichev, A.N., Korchak, V.N., (2008) Kinet. Catal., 49, pp. 682-691De Lima, S.M., Da Silva, A.M., Da Costa, L.O.O., Graham, U.M., Jacobs, G., Davis, B.H., (2009) J. Catal., 268, pp. 268-281Kang, M., Song, M.W., Lee, C.H., (2003) Appl. Catal., 251 A, pp. 143-156Spadaro, L., Arena, F., Granados, M.L., Ojeda, M., Fierro, J.L.G., Frusteri, F., (2005) J. Catal., 234, pp. 451-462Wyrwalski, F., Giraudon, J.M., Lamonier, J.F., (2010) Catal. Lett., 137, pp. 141-149Wang, C.B., Lee, C.C., Bi, J.L., Siang, J.Y., Liu, J.Y., Yeh, C.T., (2009) Catal. Today, 146, pp. 76-81Holgado, J.P., Alvarez, R., Munera, G., (2000) Appl. Surf. Sci., 161, pp. 301-315Lucrédio, A.F., Bellido, J.A., Assaf, E.M., (2011) Catal. Commun., 12, pp. 1286-1290Sahoo, D.R., Vajpai, S., Patel, S., Pant, K.K., (2007) Chem. Eng. J., 125, pp. 139-147Lin, S.S.Y., Kim, D.H., Ha, S.Y., (2009) Appl. Catal., 355 A, pp. 69-77Batista, M.S., Santos, R.K.S., Assaf, E.M., Assaf, J.M., Ticianelli, E.A., (2003) J. Power Sources, 124, pp. 99-103Llorca, J., Homs, N., Sales, J., Fierro, J.L.G., Ramírez De La Piscina, P., (2004) J. Catal., 222, pp. 470-480Ciambelli, P., Palma, V., Ruggiero, A., (2010) Appl. Catal., 96 B, pp. 18-27Pereira, E.B., Homs, N., Martí, S., Fierro, J.L.G., Ramírez De La Piscina, P., (2008) J. Catal., 257, pp. 206-21