Preparation of Pt-Sn-K/Al₂O₃ Catalysts and its Catalytic Performance in Propane Dehydrogenation

Abstract:

Al2O3 supported platinum catalysts prepared by using different impregnation methods have been tested for the dehydrogenation of propane to propylene. The effect of promoter type and amounts of promoters has been investigated in a detail. The results indicated that the best catalytic performance was achieved on the catalyst prepared under the following conditions: sequential impregnation method, Sn and K as promoter, Pt loading 0.5%, Sn loading 1.0%, K loading 2.1%.

• Periodical: Advanced Materials Research (Volumes 560-561)
• Pages: 289-293
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.560-561.289
• Online since: August 2012
• Authors: Jun Li, Ning Ning Wang, Zhan Hua Ma
• Keywords: Catalyst, Dehydrogenation, Propane, Propylene, Pt-Sn-K

References

[1] K. Chen, E. Iglesia, A.T. Bell, Isotopic Tracer Studies of Reaction Pathways for Propane Oxidative Dehydrogenation on Molybdenum Oxide Catalysts, J Phys Chem B. 105 (2001) 646-653.

DOI: 10.1021/jp002100x

[2] Y.J. Wang, Y.M. Wang, S.R. Wang, Propane Dehydrogenation Over PtSn Catalysts Supported on ZnO-Modified MgAl2O4, Catal Lett. 132 (2009) 472-479.

DOI: 10.1007/s10562-009-0119-4

[3] J.M. Hill, R.D. Cortright, J.A. Dumesic, Silica- and L-zeolite-supported Pt, Pt/Sn and Pt/Sn/K catalysts for isobutane dehydrogenation, Appl Catal A. 168 (1998) 9-21.

DOI: 10.1016/s0926-860x(97)00338-4

[4] R.X. Li, N.B. Wong, K.C. Tin, The effect of lantha- num in dehydrogenation of propane on Pt-Sn bimetallic catalysts, Catal Lett, 50 (1998) 219-223.

[5] M.L. Casella, G.J. Siri, G.F. Santori, etc, Surface characterization of Li-modified Pt/Sn catalysts for isobutene dehydrogenation, Langmuir, 16 (2000) 5639-5643.

DOI: 10.1021/la991437r

[6] G.J. Siri, G.R. Bertolini, M.L. Casella, etc, OAPtSn/γ{TTP}947 -Al 2 O 3 isobutane dehydrogenation catalysts: The effect of alkaline metals addition, Mater Lett, 59 (2005)2319-2321.

DOI: 10.1016/j.matlet.2005.03.013

[7] C.L. Yu, H.Y. Xu, Q.J. Ge, etc, Properties of the metal-lic phase of zinc-doped platinum catalysts for propane dehydrogenation, J Mol Catal A, 266 (2007) 80-87.

DOI: 10.1016/j.molcata.2006.10.025

[8] M.S. Kumar, D. Chen, J.C. Walmsley, etc, Dehydrogenation of propane over Pt-SBA-15: Effect of Pt particle size, Catal Commun, 9 (2008) 747-750.

DOI: 10.1016/j.catcom.2007.08.015

[9] M.M. Bhasin, J.H. McCain, B.V. Vora, etc, Dehydrogenation and oxydehydrogenation of paraffins to olefins, Appl Catal A, 221 (2001) 397-419.

DOI: 10.1016/s0926-860x(01)00816-x

[10] O.A. Barias, A. Holmen, E.A. Blekkan, Propane dehydrogenation over supported platinum catalysts: Effect of tin as a promoter, J. Catal. Today. 24 (1995) 361-364.

DOI: 10.1016/0920-5861(95)00059-o

[11] M.S. Kumar, D. Chen, J.C. Walmsley, etc, Dehydrogenation of propane over Pt-SBA-15 and Pt-Sn-SBA-15: Effect of Sn on the dispersion of Pt and catalytic behavior, Catal. Today. 142(2009) 17-23.

DOI: 10.1016/j.cattod.2009.01.002

[12] E. Merlen, P. Beccat, J. C. Bertolini, etc, Characterization of bimetallic Pt–Sn/Al2O3 catalysts: Relationship between particle size and structure, J. Catal., 159(1996) 178-188.

DOI: 10.1006/jcat.1996.0077

[13] B.K. Vu, M.B. Song, I.Y. Ahn, etc, Location and structure of coke generated over Pt-Sn/Al2O3 in propane dehydrogenation, J. Ind. Eng. Chem., 17(2011) 71-76.

DOI: 10.1016/j.jiec.2010.10.011

[14] Q. Dong, J. Wang, X.C. Wu, etc, The role of each component in Pt-Sn-K/Al2O3 catalyst for propane dehydrogenation, Journal of Daqing Petroleum Institute, 19(1995) 61-63.