Abstract
Hydrogen sulfide removal catalyst was prepared chemically by precipitation of zinc bicarbonate at a controlled pH. The physical and chemical catalyst characterization properties were investigated. The catalyst was tested for its activity in adsorption of H2S using a plant that generates the H2S from naphtha hydrodesulphurization and a unit for the adsorption of H2S. The results comparison between the prepared and commercial catalysts revealed that the chemical method can be used to prepare the catalyst with a very good activity.
It has observed that the hydrogen sulfide removal over zinc oxide catalyst follows first order reaction kinetics with activation energy of 19.26 kJ/mole and enthalpy and entropy of activation of 14.49 kJ/mole and -220.41 J/mole respectively.
References
[2] L.Susan., J.Kandaswami.and F.S.Maria., Ind.Eng.Chem.Res, 1989, 28, 535
[3] MERC Hot Gas Cleanup Task Force Chemistry of Hot Gas Cleanup in Coal Gasification and Combustion. Final Report MERK/SP-72/2, 1978; MERC, Morgantown, WV.
[4] F.Boccuzzi, E.Borello, A.Zecchina, A.Bocci and M.Camia, J. Catalysis, 1978, 51, 150.
[5] Z. A-A. Khammas, S. K. Al-Dawery and T.A. Abdulla, Iraqi J. of Chem. and Pertro. Engineering, in press 2005.
[6] R.N.Hoppener, E.B.M.Doesburg and J.J.F.Scholten J. Catalysis., 1986, 25, 109.
[7] COLL 23 [767344]: “γ-Alumina supported Na2CO3, K2CO3 and CuO for flue gas desulphurization”, D.E. Jiang1, Biying Zhao2 and Youchang Xie2.(1) Department of Chemistry and Biochemistry, University of California, Los Angeles, Box 951569, Los Angeles, CA 90095-1569.
[8] COLL 23[773574]: “Mechanistic Studies of the Reaction of Organosulfur Compound on Metal Oxide Single Crystal Surfaces”. John , M., Vohs Barr Halevi, department of Chemical and Bimolecular Engineering, University of Pennsylvania, 220S.33rd Street, Philadelphia, PA 19104-6393, [email protected].
[9] L.Yanxu, H.Guo, L.Chunhu and S.Zhang, Ind.Eng.Chem.Res., 36, 9, 3982,1997.
[10] “IP standards for Petroleum and Its Products”, The Institute of Petroleum, England 3rd ed. 1976.
[11] A.I.Vogel, “Vogel's Textbook of Quantitative Inorganic Analysis”, 4th edition, Longman Scientific & Technical, London 1978.
[12] F. Satter and N. Charles., “Heterogeneous Catalysis in Practice”, Mc Graw-Hill, Inc., New York 1980.
[13] J.F Le Pag and J. Miquel, “In Preparation of Catalysts”, (Delmon B., Jacobs P.A. and Poncelt G.), Elsevier Amsterdam (1976) 39-43.
[14] T. Grindley and G. Steinfeld. “Development and Testing of Regenerable of Hot Coal Gas Desulphurization Sorbents” Final Report DOE/MC-16545/1125, 1981; METC, Morgantown, WV.
[15] J.T.Richardson, “Principles of Catalyst Development”, University of Houston.1982.
[16] Yanxu Li, Hanxian Guo, Chunhu Li, and Shuanbing Zhang “A Study on the Apparent Kinetics of H2S Removal Using a ZnO-MnO Desulfurizer”, Ind. Eng. Chem. Res., 36 (9), 3982 -3987, 1997.
[17] Jian Sun, Shruti Modi, Ke Liu, Roger Lesieur, and John Buglass “Kinetics of Zinc Oxide Sulfidation for Packed-Bed Desulfurizer Modeling”, Energy Fuels, 21 (4), 1863 -1871, 2007.
[18] Yeo Il Yoon, Myung Wook Kim, Yong Seung Yoon and Sung Hyun Kim, “A kinetic study on medium temperature desulfurization using a natural manganese ore”, Chemical Engineering Science,Vol. 58, 10, pp. 2079-2087, 2003.
[19] Fan Huiling, Li Yanxu, Li Chunhu, Guo Hanxian and Xie Kechang “The apparent kinetics of H2S removal by zinc oxide in the presence of hydrogen”, Fuel, Volume 81, Issue 1, pp. 91-96, 2002.
[20] Liyu Li and David L. King, “H2S removal with ZnO during fuel processing for PEM fuel cell applications”, Catalysis Today, Vol. 116, 4, pp. 537-541, 2006,
[21] P.W. Atkins, Physical Chemistry, 6th edition, Oxford University Press, 2001.
[22] K.D. Jones, A. Martinez, K.Maroo, S.Deshpande and J.Boswell, Journal of The Air and Waste Management association, January (2004).
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