Studies on the Catalytic Activity of Sulfated Zirconia Promoted with Cerium Oxide

Abstract:

Pure zirconia, sulfated zirconia and sulfated zirconia modified with 2, 3, 5 and 10 wt. % of cerium oxide were synthesized by sol-gel method. Pt phase was impregnated on the supports using the incipient wet technique. Sulfated zirconium oxide showed tetragonal phase only. Addition of cerium to sulfated zirconia did not modify the tetragonal phase but produced a marked effect on the surface area. Low cerium content may greatly increase the surface area; however, too high cerium content (10 wt.%) may decrease the surface area. Pore size had influence on the catalytic activity and ZrO2 acidity was favored by the sulfate ion incorporation. All catalysts having Brönsted and Lewis acid sites were active in the n-hexane isomerization. The highest n-hexane conversion (40%) and selectivity towards DMB (26%), 2-methyl pentane (61%) and 3-methyl pentane (13%) were reached over the catalyst with 10 wt. % cerium oxide. In addition, sulfated zirconium oxide presented high selectivity of light products (< C6), which indicated that the addition of this doping agent (CeO2) made the catalysts more selective toward the desired reaction products.

• Periodical: Advanced Materials Research (Volume 132)
• Pages: 149-161
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.132.149
• Online since: August 2010
• Authors: F.E. Lugo del Ángel, R. Silva-Rodrigo, A. Vázquez Rodríguez, R. García Alamilla, J. Navarrete Bolaños, A. Castillo Mares, José Aarón Melo-Banda, Eduardo Térres-Rojas, J.L. Rivera Armenta
• Keywords: BET, FTIR Pyridine, Isomerization, Pt/ZrO₂SO₄-CeO₂, Sol-Gel ZrO₂, X-Ray Diffraction (XRD)

References

[1] P. Lukinskas, S. Kuba, R. Grasselli, H. Knözinger: Springe Vol. 46 (2007), p.87.

[2] J. Van Gestel, Vu T. Nghiem, D. Guillaume, J. P. Gilson and J. C. Duchet: J. Catal. Vol. 212 (2002), p.173.

[3] O. Masini, L. Orzona, N. Comelli, R. Montenegro, A. Carrascull y M. Ponzi: Información Tecnológica Vol. 8 (1997), p.163.

[4] G.X. Yu, X.L. Zhou, C. Tang, C.L. Li, J.A. Wang, and O. Novaro: Catalysis Communications Vol. 9 (2008), p.1770.

[5] J. Salmones, R. Licona, J. Navarrete, P. Salas and J. Morales: Catal. Lett. Vol. 36 (1996), p.135.

[6] K. Shimizu, T. Sunagawa, C.R. Vera, K. Ukegawa: Appl. Catal. A Vol. 206 (2001), p.79.

[7] Vázquez, T. López, R. Gómez, Bokhimi, A. Morales and O. Novaro: J. of Solid Vol. 128 (1997), p.161.

[8] G. Pecchi, P. Reyes, M. G. Jiliberto, T. López, J. L. G. Fierro: J. Sol-Gel Sci Technol. Vol. 37 (2006), p.169.

[9] Silva Rodrigo R., J.M. Hernández Enriquez, A. Castillo Mares, J.A. Melo Banda, R. Garcia Alamilla. M. Picquart, T. López Goerne: Catal. Today Vol. 107-108 (2005), p.838.

DOI: 10.1016/j.cattod.2005.07.019

[10] F. Babor, G. Coudurier, and J.C. Vedrine: J. Catal. Vol. 152 (1995), p.341.

[11] M. L Hernández Pichardo, J.A. Montoya, P. del Angel, A. Vargas, J. Navarrete: Appl. Catal. Vol. 345 (2008), p.233.

[12] G. Leofanti., M. Padovan, G. Tozzola, B. Venturelli: Catal. Today Vol. 41 (1998), p.207.

DOI: 10.1016/s0920-5861(98)00050-9

[13] J.E. Rekoske, y M.A. Barteau: J. of Catal. Vol. 165 (1997), p.57.

[14] Barret C: Estructure of Metals,. McGraw-Hill Book Company, Inc. New York (1957).

[15] R. Ling; M. Yoshida; P.S. Mariano: J. Org. Chem. Vol. 61 (1996), p.4439.

[16] R. Morrison Thornton and R. Boyd Neilson: Quimica Orgánica, 5ta. Edición, Editorial Pearson Educación (1998), p.286.

[17] F.E. Lugo del Angel, R. Silva-Rodrigo, E.L. Cruz Domínguez, J. A. Melo Banda, A. Castillo Mares, A. Vázquez Rodríguez, J. Navarrete Bolaños, R. García Alamilla: Memorias del XXI Simposio Iberoamericano de Catálisis LT5-P60-X, (2008), p.952.

DOI: 10.4028/www.scientific.net/amr.132.149

[18] N.M. Acosta, J.L. Rodríguez, H. Armendáriz, J.L. Contreras, J. Navarrete, A. Vázquez, B. Zeifert, G.A. Fuentes, R. Luna P. J. Salmones: XXIX Encuentro Nacional de la AMIDIQ, Vol. 2 (2008), p.125.

[19] Knözinger H., Y. and P. Ratnasamy: Catal. Rev. Sci. Eng. Vol. 17 (1978), p.31.

[20] Huang Yin-Yan, Zhao Bi-Ying, Xie You-Chang. Appl. Cat. A: General Vol. 172 (1988), p.327.

[21] K. Föttinger, K. Zorn, H. Vinek: Catal. Today Vol. 284 (2005), p.69.

[22] P. Nascimiento, C. Akratopoulou, M. Oszagyan, G. Coudurier, C. Travers, J.F. Joly and J.C. Vedrine: in New Frontiers in Catalysis, Proceedings of the 10Th International Congress on Catalysis, 19-24 July, Budapest, Hungary (1992), p.1185.

DOI: 10.1016/s0167-2991(08)64443-2

[23] Kiyoyuki Shimizu, Noriaki Kounami, Hiroyasu Wada, Tetuya Shishido, Hideshi Hattori: Catalysis Letters Vol. 54 (1998), p.153.

DOI: 10.1023/a:1019008812403

[24] Thomas Onfroy, Guillaume Clet, Saeed B. Bukallah, David M. Hercules, Marwan Houalla. Catalysis Letters Vol. 89 (2003), p.16.

DOI: 10.1023/a:1024717505705

[25] Daniel J. Rosenberg, James A. Anderson: Catalysis Letters Vol. 94 (2004), p.111.

[26] C. Morterra, G. Cerrato, F. Pinna, G. Meligrana: Topics in Catalysis Vol. 15 (2001), p.58.

DOI: 10.1023/a:1009071813446

[27] V. M. Benitez, C. R Vera., J. M. Grau, J. C. Yori, C. L. Pieck, J. M. Parera: Catal. Today Vol. 107 (2005), p.651.

DOI: 10.1016/j.cattod.2005.07.046