Determination of coke on promoted zirconium oxide catalysts in the isomerization re-action of pentane and hexane mixture at high pressure

Luu Cam Loc , Nguyen Dien Trung * and Nguyen Tri

* Corresponding author (ndtrung@ctu.edu.vn)

Article Sidebar

Full Text: PDF

Received: 28 Oct 2016
Revised: 23 Dec 2016
Accepted: 31 Oct 2017
Published: 29 Nov 2017
DOI: 10.22144/ctu.jen.2017.043
Views
150
Downloads
39
Crossref
Scopus
Google Scholar
Europe PMC
How to Cite
Luu, C. L., Nguyen, D. T., & Nguyen, T. (2017). Determination of coke on promoted zirconium oxide catalysts in the isomerization re-action of pentane and hexane mixture at high pressure. CTU Journal of Innovation and Sustainable Development , (07), 13-18. https://doi.org/10.22144/ctu.jen.2017.043
Issue
No. 07 (2017)

Main Article Content

Abstract

A series of bifunctional catalysts: sulfated zirconia, tungstated zirconia and alumina-supported zirconia as effective supports for Pt was been prepared. The structure and the surface property of denatured zirconium oxide catalysts were characterized by using physico-chemical methods such as XRD, BET, SEM, TEM and TPR. Their catalytic activity in isomerization reaction and stability of catalysts was tested by GC. The coke deposited on catalyst surface was determined by a burn-off method. The mass of coke formed on Pt/ZrO2-g-Al2O3 (Pt/ZrAl), Pt/ZrO2-SO4 (Pt/ZrS) and Pt/ZrO2-WO3 (Pt/ZrW) was 5.23%, 4.06% and 1.23% respectively. 
Keywords: Hexane, isomerization, pentane, Pt/ZrAl, Pt/ZrS, Pt/ZrW

Article Details

Creative Commons License

This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License.

References

Barrera, A., Montoya, J.A., Viniegra, M., et al., 2005. Isomerization of n-hexane over mono- and bimetallic Pd-Pt catalysts supported on ZrO2-Al2O3-WOx prepared by sol-gel. Applied Catalysis A: General. 290(1): 97-109.

Barton, D.G., Soled, S.L., and Iglesia, E., 1998. Solid acid catalysts based on supported tungsten oxides. Topics in Catalysis. 6(1): 87-99.

Canavese, S., Finelli, Z., Busto, M., Benitez, V.B., Vera, C.B., and Yori, J.C.., 2010. Poisoning and regeneration of Pt-Pd/WO3-ZrO2 short paraffin isomerization catalysts. Química Nova. 33: 508-513.

Comelli, R.A., Canavese, S.A., Vaudagna, S.R., and Figoli N.S., 1996. Pt/SO4-ZrO2: characterization and influence of pretreatments on n-hexane isomerization. Applied Catalysis A: General. 135: 287-299.

Comelli, R.A., Canavese, S.A., and Figoli, N.S., 1998. Effect of operational conditions during n-hexane isomerization over platinum on tungsten-oxide-promoted zirconia. Catalysis Letters. 55(3-4): 177-182.

Forzatti, P. and Lietti L., 1999. Catalyst deactivation. Catalysis Today. 52(2-3): 165-181.

Grau, J.M., Yori J.C., Vera, C.R., Lovey, F.C., Condó, A.M., and Parera, J.M., 2004. Crystal phase dependent metal–support interactions in Pt/SO4-ZrO2 catalysts for hydroconversion of n-alkanes. Applied Catalysis A: General. 265: 141-152.

Mariana, M.V.M.S. and Martin, S., 2005. Autothermal reforming of methane over Pt/ZrO2/Al2O3 catalysts. Applied Catalysis A: General. 281(1-2): 19-24.

Monica T. and Stefano P.T., 2005. γ-Alumina as a Support for Catalysts: A Review of Fundamental Aspects. European Journal of Inorganic Chemistry. 2005(17): 3393-3403.

Pedrosa, A.M.G., Souza, M.J.B., Marinkovic B.A., Melo, D.M.A., and Araujo, A.S., 2008. Structure and properties of bifunctional catalysts based on zirconia modified by tungsten oxide obtained by polymeric precursor method. Applied Catalysis A: General. 342(1-2): 56-62.

Souza, M.M.V.M., Aranda, D.A.G., Pérez, C.A.C., and Schmal, M., 2001. Reforming of methane with carbon dioxide over Pt/ZrO2/Al2O3 catalysts. Journal of Catalysis. 204(2): 498-511.

Souza, M.M.V.M., Aranda, D.A.G., and Schmal, M., 2001. Surface characterization of zirconia-coated alumina as support for Pt particles. Physica Status Solidi (a). 187(1): 297-303.

Triwahyono, S., Jalil, A.A., and Halimaton, H., 2006. Isomerization of cyclohexane to methylcyclopentane over Pt/SO4-ZrO2 catalyst. The Institution of Engineers. 67: 30-35.

Yori, J.C., Pieck, C.L., and Parera, J.M., 2000. Alkane isomerization on MoO3/ZrO2 catalysts. Catalysis Letters. 64(2-4): 141-146.

Most read articles by the same author(s)