Regeneration, MDA, Mo carbide, zeolite, aromatic, coke

Chandra Mohan Sinnathambi(1*)

(1) Department of Chemical Engineering, Universiti Teknologi PETRONAS, Bandar Seri Iskandar, 31750 Tronoh, Perak, Malaysia
(*) Corresponding Author


Methane dehydro-aromatization (MDA) is a one-step conversion of methane to aromatics under non-oxidative condition in the presence of Mo-modified HZSM-5. The main drawback of MDA reaction is the rapid deactivation of the Mo carbide catalyst by coking. For catalyst stability and efficiency, a suitable and economical catalytic regeneration system is necessary. The present study investigates the regainability of catalyst activity by in-situ regeneration of spent 3wt% -Mo/HZSM-5 catalyst in air. Encouraging results is observed when 5% oxygen at a GHSV of 4800h-1 over 1 hour was used. The main drawback is coke is favored over aromatic product.


Regeneration, MDA, Mo carbide, zeolite, aromatic, coke.

Full Text:



  1. Borry III, R.W., Kim, Y.H, Huffsmit, A.,Reimer, J.A. and Iglesia, E., J Phys. Chem. B (1999) 103, 5787.
  2. Liu, S., Don, Q., Ohnishi, R., and Ichikawa, M., Chem. Commun, (1998) 1217
  3. Liu, Z., Nutt, M.A., and Iglesia, E., Catal. Lett. 81 (2002) 271
  4. Ma, H., Ohnishi, R., and Ichikawa, M., Catal. Letts. 89 (2003) 143
  5. Mestl, G., and Knozinger, H., Langmuir (1998) 14 3964
  6. Ohnishi, R., Liu, S.T., Dong, Q., Wang, L.S., and Ichikawa, M., J. Catal.182 (1999) 92
  7. Tan, P.L., Leung, Y.L., Lai, S.Y., and Au, C.T., Catal. Lett. 78 (2002) 251
  8. Shu, Y., Ohnishi, R., and Ichikawa, M., J. Catal. 206 (2002) 134
  9. Sinnathambi C.M., Somche (2007)
  10. Yuan, S., Li, J., Hao, Z., Feng, Z., Xin, Q., Ying, P., and Li, C., Catal. Letts. 63 (1999) 73
  11. Zhang, J.Z., Long, M.A, Howe, R.F., Catal Today 44 (1998) 293


Article Metrics

Abstract views : 749 | views : 511


  • There are currently no refbacks.

ASEAN Journal of Chemical Engineering  (print ISSN 1655-4418; online ISSN 2655-5409) is published by Chemical Engineering Department, Faculty of Engineering, Universitas Gadjah Mada.