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2007 | 5 | 1 | 144-155
Tytuł artykułu

Influence of the addition of Pd and Cu to cobalt catalysts prepared by SMAI for F-T synthesis

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Warianty tytułu
Języki publikacji
EN
Abstrakty
EN
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. [...]
Wydawca

Czasopismo
Rocznik
Tom
5
Numer
1
Strony
144-155
Opis fizyczny
Daty
wydano
2007-03-01
online
2007-03-01
Twórcy
autor
  • Department of Chemistry, Nankai University, Tianjin, 300071, China
  • Department of Chemistry, Nankai University, Tianjin, 300071, China
autor
  • Department of Chemistry, Nankai University, Tianjin, 300071, China
autor
  • Department of Chemistry, Nankai University, Tianjin, 300071, China
  • Department of Chemistry, Nankai University, Tianjin, 300071, China
autor
Bibliografia
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  • [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. http://dx.doi.org/10.1016/S0926-860X(96)00216-5[Crossref]
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  • [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. http://dx.doi.org/10.1023/A:1015318525080[Crossref]
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  • [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. http://dx.doi.org/10.1016/0021-9517(78)90269-5[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. http://dx.doi.org/10.1016/0039-6028(85)90815-5[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. http://dx.doi.org/10.1021/ja00401a019[Crossref]
Typ dokumentu
Bibliografia
Identyfikatory
Identyfikator YADDA
bwmeta1.element.-psjd-doi-10_2478_s11532-006-0062-9
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