Stable Catalyst for Dry Reforming Process

Document Type : Research Paper

Abstract

Mesoporous nanocrystalline zirconia powders with high specific surface area and stable tetragonal crystallite phase were prepared by surfactant assisted precipitation method. The obtained results showed that the nanocrystalline zirconia powders have a good potentional as catalyst support in natural gas reforming with carbon dioxide. The activity results indicated that the nickel catalyst with 5 wt.% nickel loading showed stable activity for syngas production with a decrease of about 4% in methane conversion after 50 h of reaction. Addition of promoters (CeO2, La2O3, MgO and K2O) to the catalyst improved both the activity and stability of the nickel catalyst and increased the nickel dispersion and had a positive effect in preventing coke formation. The nickel catalyst (5% Ni–3% CeO2/ZrO2) showed high catalytic stability under severe reaction conditions for more than 1550 h on stream. Based on our knowledge, there is no prior documentation for a nickel catalyst that is  comparable to this catalyst in catalyst stability under the reaction conditions employed in this study.
 

Keywords

References

[1] Nielsen J.R., “New aspects of syngas production and use”, Catal. Today, Vol. 63, pp. 159-164, 2000.
[2] Lemonidou A.A. & Vasalos I.A., “Carbon dioxide reforming of methane over 5 wt.% Ni/CaO-Al2O3 catalyst”, Appl. Catal. A, Vol. 228, pp. 227-235, 2002.
[3] Richardson J.T., Garrait M. & Hung J.K., “Carbon dioxide reforming with Rh and Pt–Re catalysts dispersed on ceramic foam supports”, Appl. Catal. A, Vol. 255, pp. 69-82, 2003.
[4] Hou Z., Yokota O., Tanaka T. & Yashima T., “Surface properties of a coke-free Sn doped nickel catalyst for the CO2 reforming of methane”, Applied Surface Science, Vol. 233, pp. 58-68, 2004.
[5] Wang S. & Lu G.Q., Energy and Fuels, No. 10, pp. 896, 1996.
[6] Laosiripojana N. & Assabumrungrat S., “Catalytic dry reforming of methane over high surface area ceria”, Appl. Catal. B, Vol. 60, pp. 107-116, 2005.
[7] Xu Z., Li Y., Zhang J., Chang L., Zhou R. & Duan Z., “Bound-state Ni species- a superior form in Ni-based catalyst for CH4/CO2 reforming”, Appl. Catal. A, Vol. 210, pp. 45-53, 2001.
[8] Takehira K., Shishido T., Wang P., Kosaka T. & Takaki K., “Autothermal reforming of CH4 over supported Ni catalysts prepared from Mg–Al hydrotalcite-like anionic clay”, J. Catal., Vol. 221, pp. 43-54, 2004.
[9] Clifford Y.T., Hsiao B.Y. & Chiu H.Y., “Preparation of spherical hydrous-zirconia nanoparticles by low temperature hydrolysis in a reverse microemulsion”, Colloids and Surfaces A: Physicochem and Eng. Aspects, Vol. 237, pp. 105-111, 2004.
[10] Ma T., Huang Y., Yang J., He J. & Zhao L., “Preparation of spherical zirconia powder in microemulsion system and its densification behavior”, Materials and Design, Vol. 25, pp. 515-519, 2004.
[11] Lee M.H., Clifford Y.T. & Lu C.H., “Synthesis of spherical zirconia by precipitation between two water/Oil emulsions”, Journal of the European Ceramic Society, Vol. 19, pp. 2593-2603, 1999.
[12] Cao Y., Hu J.C., Hong Z.S., Deng J.F. & Fan K.N., Catal. Lett., No. 81 [1-2], pp. 107, 2002.
[13] Kongwudthiti S., Praserthdam P., Silveston P. & Inoue M., “Influence of synthesis conditions on the preparation of zirconia powder by the glycothermal method”, Ceramics International, Vol. 29, pp.807-814, 2003.
[14] Su C., Li J., He D., Cheng Z. & Zhu Q., “Synthesis of isobutene from synthesis gas over nanosize zirconia catalysts”, Appl. Catal. A, Vol. 202, pp. 81-89, 2000.
[15] Mrowiec-Bialon J., Pajak L., Jarzebski A.B., Lachowski A.I. & Malinowski J.J., “Preparation effects on zirconia aerogel morphology”, Journal of Non-Crystalline Solids, Vol. 225, pp. 115-119, 1998.
[16] Wang J.A., Valenzuela M.A., Salmones J., Vázquez A., Garcia-Ruiz A. & Bokhimi X., “Comparative study of nanocrystalline zirconia prepared by precipitation and sol–gel methods”, Catal Today, Vol. 68, pp. 21-30, 2001.
[17] Liu X.M., Lu G.Q. & Yan Z.F., J. Phys. Chem. B, No. 108, pp. 15523, 2004.
[18] Kim J.H., Suh D.J., Park T. & Kim K.L., “Effect of metal particle size on coking during CO2 reforming of CH4 over Ni–alumina aerogel catalysts”, Appl. Catal. A, Vol. 197, pp. 191-200, 2000.
 
Journal of Petroleum Research
Volume 18, Issue 58 - Serial Number 58
November and December 2009
Pages 11-23

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