View More View Less
  • 1 Center for Research Excellence in Petroleum Refining and Petrochemicals, King Fahd University of Petroleum and Minerals, Dhahran 31261, Saudi Arabia
  • | 2 Center for Refining and Petrochemicals, Research Institute, King Fahd University of Petroleum and Minerals, Dhahran 31261, Saudi Arabia
  • | 3 Chemical Engineering Department, King Fahd University of Petroleum and Minerals, Dhahran 31261, Saudi Arabia
Restricted access

Abstract

A series of metal incorporated M-MCM-41 (M = Ce, Mo, and/or V) mesoporous materials were synthesized by the hydrothermal method. The synthesized mesoporous materials were characterized by the XRD, BET, TPR and EPR techniques. The extent of mesoporous structural ordering was evident from the XRD pattern of M-MCM-41. The catalytic properties of the metal containing MCM-41 catalysts were evaluated for oxidative dehydrogenation of propane and n-butane in a fixed-bed micro-reactor. The results showed higher activity in case of V-MCM-41 catalyst as compared to that of Mo-MCM-41 catalysts over a temperature range of 500–600 °C at atmospheric pressure. Cerium containing MCM-41 catalyst showed high selectivity (78%) for butadiene at moderate conversion of about 4%. The major products include ethylene, propylene and butanes. Propane conversion of about 20% with corresponding propylene selectivity of around 30% was obtained at 575 °C over V-MCM-41 catalyst. A small amount of H2 besides COx was also produced during catalytic runs under the conditions of catalyst performance evaluation.

  • 1. Kung, HH, Kung, MC 1997 Appl Catal A Gen 157:105 .

  • 2. Grzybowska, B, Sloczynski, J, Grabowski, R, Wcislo, K, Kozlowska, A, Stoch, J, Zielinski, J 1998 J Catal 178:687 .

  • 3. Shimada, HT, Akazawa, N Ikenaga Suzuki, T 1998 Appl Catal A Gen 168:243 .

  • 4. Liu, W, Lai, SY, Dai, H, Wang, S, Sun, H, Au, CT 2008 Catal Today 131:454.

  • 5. Cavani, F, Ballarini, N, Cericola, A 2007 Catal. Today 127:113 .

  • 6. Chaar, MA, Patel, D, Kung, HH 1988 J. Catal. 109:463 .

  • 7. Brazdil, JF 2006 Top Catal 38:289 .

  • 8. Argyle, MD, Chen, K, Bell, AT, Iglesia, E 2002 J. Catal. 208:139 .

  • 9. Steinfeldt N , Mu¨ller D, Berndt H (2004) Appl. Catal A272,:201.

  • 10. Kondratenko, EV, Baerns, M 2001 Appl. Catal. A 222:133 .

  • 11. N. Steinfeldt , M. Baerns, U. Dingerdissen, Chem. Eng. Tech. 28 (2005).

  • 12. Grasselli, RK 2002 Top Catal 21:79 .

  • 13. Pen~a, ML, Dejoz, A, Fornes, V, Rey, F, Vazquez, MI, Lopez Nieto, JM 2001 Appl. Catal. A 209:155 .

  • 14. Lim, S, Haller, GL 1999 Appl. Catal. A Gen. 188:317 .

  • 15. Solsona, B, Blasco, T, Lopez Nieto, JM, Pen~a, ML, Rey, F, Vidal-Moya, A 2001 J. Catal 203:443 .

  • 16. Kim, JM, Kwak, JA, Jun, S, Ryoo, R 1995 J Phys Chem 99:16742 .

  • 17. Ahmed, S, Ali, SA, Alam, K, Hamid, SH, Iwamatsu, E, Hayashi, E, Sanada, Y, Yoneda, T 1999 Arab. J. Sci. Eng. 24:71.

  • 18. Brukner, A 2006 Topics Catal 38:133 .

  • 19. Oliva, C, Cappelli, S, Rossetti, I, Bellarini, N, Oliva, C, Cavani, F, Forni, L 2009 Chem. Eng. J. 154:131 .

  • 20. T. Blasco and J.M. Lopez Nieto (1997) Appl Catal A Gen. 157: 117.

  • 21. Puglisi, M, Arena, F, Frusteri, F, Sokolovskii, V, Parmaliana, A 1996 Catal Lett 41:41 .

  • 22. Albonetti, S, Cavani, F, Trifiro, F 1996 Catal. Rev. Sci. Eng. 38:413 .

  • 23. Sasikala, R, Sudarsan, V, Sakuntala, T, Sudakar, JC, Naik, R, Bharadwaj, SR 2008 Appl. Catal. A Gen. 350:252 .