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2007 | 5 | 1 | 144-155
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Influence of the addition of Pd and Cu to cobalt catalysts prepared by SMAI for F-T synthesis

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The Co-Pd/SiO2 and Co-Cu/SiO2 catalysts were prepared via solvated metal atom impregnation (SMAI) method and investigated for the Fischer-Tropsch (F-T) synthesis. The catalysts contained 5wt.% Co and a weight ratio of Pd (or Cu) to Co of 1/30. XPS indicated that Co, Pd and Cu were in metallic state. The results of XPS and magnetic measurements showed that Co and Pd (Cu) were alloyed. The Co particles on the catalysts were very highly dispersed and they displayed superparamagnetic behavior. FT-IR indicated that the electrons shifted from Cu and Pd to Co. Catalytic tests showed that CO hydrogenation rates followed the order Pd-Co > Cu-Co > Co. [...]

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  • Department of Chemistry, Nankai University, Tianjin, 300071, China
  • Department of Chemistry, Nankai University, Tianjin, 300071, China
  • Department of Chemistry, Nankai University, Tianjin, 300071, China
  • Department of Chemistry, Nankai University, Tianjin, 300071, China
  • Department of Chemistry, Nankai University, Tianjin, 300071, China
  • [1] R.B. Anderson: The Fischer-Tropsch Synthesis, Academic Press, New York, 1984, pp 1–10.
  • [2] T. Matsuzaki, K. Takeuchi, T. Hanaoka, Y. Sugi and M. Reinkiainen: “Effects of modification of highly dispersed cobalt catalysts with alkali cations on the hydrogenation of carbon monoxide”, Catal. Lett., Vol. 10, (1991), pp. 193–199.[Crossref]
  • [3] Z. Zsoldos, T. Hoffer and L. Guczi: “Structure and catalytic activity of alumina supported platinum-cobalt bimetallic catalysts. 3 Effect of treatment on the interface layer”, J. Phys. Chem., Vol. 96, (1992), pp. 9393–9400.[Crossref]
  • [4] E. Iglesia, S.L. Soled, R.A. Fiato and G.H. Via: “Bimetallic synergy in cobalt-ruthenium Fischer-Tropsch synthesis catalysts”, J. Catal., Vol. 143, (1993), pp. 345–368.[Crossref]
  • [5] D. Schanke, S. Vada, E.A. Blekkan, A.M. Hilmen, A. Hoff and A. Holmen: “Study of Pt-Promoted Cobalt CO Hydrogenation Catalysts”, J. Catal., Vol. 156, (1995), pp. 85–95.[Crossref]
  • [6] N. Tsubaki, S. Sun and K. Fujimoto: “Different Functions of the Noble Metals Added to Cobalt Catalysts for Fischer-Tropsch Synthesis”, J. Catal., Vol. 199, (2001), pp. 236–246.[Crossref]
  • [7] M.K. Niemelu, O.I. Krause, T. Vaara, J.J. Kiviacho and M.K.O. Rainkainen: “The effect of the precursor on the characteristics of Co/SiO2 catalysts”, Appl. Catal., Vol. 147, (1996), pp. 325–345.[Crossref]
  • [8] T. Matsuzaki, K. Takeuchi, T.A. Hanoaka, A. Arakawa and Y. Sugi: “Hydrogenation of carbon monoxide over highly dispersed cobalt catalysts derived from cobalt(II) acetate”, Catal. Today, Vol. 28, (1996), pp. 251–259.[Crossref]
  • [9] S.H. Wu, S.J. Yang and W.P. Huang: “Preparation of Highly Dispersed Supported Metal Catalysts via Solvated Metal Atom Impregnation, V. The Effeets of Hydroxyl Group Concentrations on the Surface of SiO2 on the properties of Supported Fe Clusters”, Chem. J. Chinese Univ., Vol. 6, (1990), pp. 47–49.
  • [10] S.M. Zhang, W.P. Huang, X.H. Qiu, B.Q. Li, X.C. Zheng and S.H. Wu: “Comparative Study on Catalytic Properties for Low-temperature CO Oxidation of Cu/CeO2 and CuO/CeO2 Prepared via Solvated Metal Atom Impregnation and Conventional Impregnation”, Catal. Lett., Vol. 80, (2002), pp. 41–46.[Crossref]
  • [11] P.L. Timms: “Low-temperature condensation of high-temperature species as a synthetic method”, Adv. Inorg. Chem. Radiochem., Vol. 14, (1972), pp. 121–171.
  • [12] R.C. Reuel and C.H. Bartholomew: “The Stoichiometries of H2 and CO Adsorption on Cobalt: Effects of Support and Preparation”, J. Catal., Vol. 85, (1984), pp. 63–70.[Crossref]
  • [13] P.W. Selwood: Chemisorption and Magnetization, Academic Press, New York, (1975), pp. 1–50.
  • [14] M.J. Dees, T. Shido, Y. Iwazawa and V. Ponec: “Infrared studies of carbon monoxide adsorbed on supported platinum-cobalt catalysts”, J. Catal., Vol. 124, (1990), pp. 530–540.[Crossref]
  • [15] M.J. Heal, E.C. Leisegang and R.G. Torrington: “Infrared studies of carbon monoxide and hydrogen adsorbed on silica-supported iron and cobalt catalysts”, J. Catal., Vol. 51, (1978), pp. 314–325.[Crossref]
  • [16] S. Ishi, Y. Ohno and B. Viswanathan: “An overview on the electronic and vibrational properties of adsorbed carbon monoxide”, Surf. Sci., Vol. 161, (1985), pp. 349–372.[Crossref]
  • [17] S.C. Dowis, S.J. Seveson and K.J. Klabunde: “Low-temperature cleavage of alkanes by small nickel particles resulting in stable nickel-organic composites with unusual magnetic and chemical properties”, J. Am. Chem. Soc., Vol. 103, (1981), pp. 3024–3029.[Crossref]
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