Abstract
Naphtha catalytic reforming process using bimetallic platinum and titanium loaded on nano synthesized HY zeolite was investigated for the product octane number enhancement. The activity of five samples of the prepared catalyst with different bimetallic loading of 0.13, 0.25 wt% Pt and 0.75, 1, 2.2 wt% Ti were investigated for Iraqi heavy naphtha catalytic reforming at the temperature range of 490, 500 and 510 °C and pressure of 10 bar in a packed bed pilot plant reactor. The best result of the research octane number was 84 for reformate product using the sample of 0.13% Pt–0.75% Ti%/HY zeolite at temperature 510 °C and 10 bar achieving 47% increase. All samples of the prepared catalyst showed a good stability during the operation at severe conditions and the maximum carbon content was about 9% due to the deposition of coke precursor on the catalyst surface. The reformate yield was investigated for all catalyst samples under 10 and 20 bars and the same range of temperature and ranged from 89 to 94%. These results are encouraging for future possible replacement of the conventional catalyst by the local synthetic zeolite. Octane number was correlated on the basis of constituent’s boiling points. The maximum absolute error between the experimental and predicted octane number was about 3 and 5% using 10 and 20 bar respectively.
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References
Ahmedzeki N, Al-Tabbakh B (2016) Catalytic reforming of Iraqi naphtha over Pt-Ti/HY zeolite catalyst. Iraqi J Chem Eng 17:45–56
Ahmedzeki N, Yilmaz S, Al-Tabbakh B (2016) Synthesis and Characterization of nanocrystalline zeolite Y. Al-Khwarizmi Eng J 12:79–89
Al-Hahri T, Riazi M (2002) Octane number & aniline point of petroleum fuels. Fuel Chem 47:711–713
Al-Haj H, Al-Kassmi M (1997) Correlation between the octane number of motor gasoline and its boiling range. J King Saud Univ 9:311–318
Alrawi US (2008) Hydroconversion of n-hexane over platinum supported zeolite catalyst prepared by super critical technique. PhD Thesis, University Of Baghdad
Al-Saraji M, Rahman A, Al-Hassani M (2013) Enhancement of Iraqi light naphtha octane number using Pt Supported HMOR zeolite catalyst. Al-Khwarizmi Eng J 9:1–11
Al-Tabbakh BA (2000) Isomerization of n-hexane over platinum supported catalyst by using some monitoring agents. MSc Thesis, Nahrain University
Belyi A et al (1988) Catalytic properties of metalic and electron deficient platinum in reforming over Pt/Al2O3 catalyst. React Kinet Catal Lett 37:457–462
Bournoville JP, Frank JP (1988) Hydrogen and catalytic reforming. In: Paal Z, Menon PG (eds) Hydrogen effects in catalysis. Fundamentals and practical applications. Marcel Dekker, New York
Chen H, Matsumto A, Nishimiya N, Tsutsumi K (1999) Preparation and characterzation of TiO2 incorporated Y zeolite. Collids Surf 157:295–305
Galperin L, Bricler J, Holmgren J (2003) Effect of support acid-basic properties on activity and selectivity of Pt catalysts in reaction of methylcyclopentane ring opening. Appl Catal 239:297–304
George A, Arpad M (2003) Hydrocarbon chemistry. Wiley, New Jersy
George J, Aitani AM (2004) Catalytic naphtha reforming. Marcel Dekker, New York
Ghenos M, Damyanova S, Riguelto B, Marques C (2003) CO2 reforming of CH4 over Ru/zeolite catalysts modified with Ti. J Mol Catal A 198:263–275
Goodarzt T et al (2008) Synthesis and activity measurment of the some Bi-functional platinum loaded beta zeolite catalysts for n-heptane hydroisomerization. J Ind Eng Chem 14:614–621
Meyers R (2008) Hand book of petroleum refining process. Mc Grow HiLL, New York
Rahimpour MR, Jafari M, Iranshahi D (2013) Progress in catalytic naphtha reforming process: a review. Appl Energy 109:79–93
Raouf SR, Sukkar KA, Hamied RS (2011) Heavy naphtha reforming reactions with tri-metalic catalysts, experimental and anylytical invistigation. Eng Technol J 29:1917–1935
Rase H (1972) Case studies and design data, case study 108 catalytic reforming. In: Chemical reactor design for process plant. Wiley, New York, pp 99–114
Regali F et al (2014) Effect of metal loading on activity, selectivity and deactivation behavior of Pd/silica—alumina catalysts in the hydroconversion of n-hexadecane. Catal Today 223:87–96
Sunggyu L (2006) Encyclopedia of chemical processing. Taylor & Francis Group, New York
Yasutaka K et al (2004) XAFS study on TiO2 photocatalyst loaded zeolite synthesiszed from steel slag. American Institute of Physics, New York
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The financial support and facilities provided by the Ministry of Oil and the Ministry of Higher Education are gratefully acknowledged. Also, the authors are grateful to the Izmir Institute of Technology for hosting and catalyst preparation and characterization.
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Ahmedzeki, N.S., Al-Tabbakh, B.A., Antwan, M.B. et al. Heavy naphtha upgrading by catalytic reforming over novel bi-functional zeolite catalyst. Reac Kinet Mech Cat 125, 1127–1138 (2018). https://doi.org/10.1007/s11144-018-1432-y
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DOI: https://doi.org/10.1007/s11144-018-1432-y