Vol. 18, No. 3 (August 2005) 285-293   

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H. Ateshy, R. Akhavan, M. Khoshnoodi

Department. of Chem. Engineering., University of Sistan & Baluchestan, Zahedan, Iran, h.ateshy@hamoon.usb.ac.ir,
Akhvan1970@yahoo.com, khosh@hamoon.usb.ac.ir

( Received: June 15, 2004 )

Abstract    The effects of potassium promoter for production of heavy hydrocarbons from syngas with silica- supported cobalt catalysts has been studied. After preparing the catalysts in accordance with the sol-gel method, they were subjected to various tests by using a small steely micro-reactor and capable of operating in diversified situations, such as stable temperature range, flow rate, space velocity, etc. Thorough observations revealed that the conducive situations can be achieved by the ratio of H2/CO=2 with a temperature of 220 ºC, whereas the flow rate of CO and N2 components must be equal about 35 ml/min.


Keywords    Fischer-Tropsch-Synthesis, Olefin, Synthesis gas, Cobalt catalyst, Promoter



1. D. R. Stull, E. F. Westrn, & G. C. Skinke, "The chemical thermodynamics of organic compounds", Wiley, New York, (1989).

2. J. A. Rabo, A. P. Risch & M. L. Poustma, “Reaction of carbon- monoxide and hydrogen on Co, Ni, Ru and Pd metals” J. Catal., 53, 287-294, (1978).

3. J. Mrtin et al, “Fischer-Tropsch Kinetic studies with cobalt-mangAanese oxide catalysts”, Ind. Eng. Chem. Res., 39, 48-54, (2000).

4. E. W. Kuipers, C. Scheper, J. H. Wilson, L. H. Vinkenburg and H. Oosterbeek, “Non-ASF product distributions due to secondary reactions during Fischer-Tropsch-Synthesis”, J. Catal., 158, 228-300, (1996).

5. S. Schulz., K. Beck, and E. Erich, “Kinetics of F-T selectivity”, Fuel Proc. Tech., 18-293-304, (1988).

6. G. Moradi, A. Taeb & M. Basir, "Effects of Zr on the physical characteristics and performance of cobalt catalysts in FTS", Iranian J. of Chem. & Chem. Eng. (Persian), 22, 2, 17-24, (2003).

7. Ernest B. Libs S., Chaumette P., Kiennemann A., “Preparation and characterization of Fischer-Tropsch active Co/SiO2 catalysts”, Appl. Catal. A: General, 186, 145-168, (1999).

8. Steynberg A. P. et al, “High temperature F-T-S in commercial”, Appl. Catal., A: General, 186, 41-54, (1999).

9. M., Haghshenasfard., M. Khoshnoodi et al., “Hydrogenation of CO over a cobalt/ cerium oxide catalyst for production of lower olefins”, Iranian J. of Sci. & Tech., Transaction: B, 28, B6, (2004).

10. Twigg M. V., “Catalyst Handbook” 2nd ed., Wolf Publishing LTD., 110, (1997).

11. Smith L., Gerald V., “Heterogeneous catalysis in organic chemistry”, Academic press, San Diego, U. S. A, (1997).

12. (Appurtenance) Ishihara J. et. al, “Effect of alloying on CO hydrogenation activity”, J. Catal., 136, 232, (1992).

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