Catalysis Letters

, Volume 91, Issue 1–2, pp 95–102 | Cite as

Effect of Cobalt Precursors on the Dispersion of Cobalt on MCM-41

  • Joongjai Panpranot
  • Surajee Kaewkun
  • Piyasan Praserthdam
  • James G. GoodwinJr.
Article

Abstract

Co/MCM-41 catalysts were prepared using the incipient wetness impregnation technique with aqueous solutions of different cobalt compounds such as cobalt nitrate, cobalt chloride, cobalt acetate, and cobalt acetylacetonate. MCM-41 is known to have a restricted pore structure; however, using organic precursors such as cobalt acetate and cobalt acetylacetonate resulted in very small cobalt oxide particles that could not be detected by XRD even for a cobalt loading as high as 8 wt%. These cobalt particles were small enough to fit into the pores of MCM-41. However, they were found to chemisorb CO in only relatively small amounts and to have low activities for CO hydrogenation—probably due to the formation of cobalt silicates. The use of cobalt chloride resulted in very large cobalt particles/clusters and/or residual Cl--blocking active sites, and, consequently, very small active surface area was measurable. The use of cobalt nitrate resulted in a number of small cobalt particles dispersed throughout MCM-41 and some larger particles located on the external surface of MCM-41. Cobalt nitrate appeared to be the best precursor for preparing high-activity MCM-41-supported cobalt Fischer–Tropsch synthesis catalysts.

cobalt catalyst preparation cobalt precursors MCM-41 CO hydrogenation 

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References

  1. [1]
    R. B. Anderson, The Fischer–Tropsch Synthesis (Academic Press, San Diego, 1984).Google Scholar
  2. [2]
    J. G. Goodwin Jr., Prep. ACS Div. Petr. Chem. 36 (1991) 156.Google Scholar
  3. [3]
    E. Iglesia, Appl. Catal. A161 (1997) 50.Google Scholar
  4. [4]
    R. C. Reuel and C. H. Bartholomew, J. Catal. 85 (1984) 78.Google Scholar
  5. [5]
    L. B. Backman, A. Rautiainen, A. O. I. Krause and M. Lindblad, Catal. Today 43 (1998) 11.Google Scholar
  6. [6]
    G. J. Haddad and J. G. Goodwin Jr., J. Catal. 157 (1995) 25.Google Scholar
  7. [7]
    J. van de Loosdrecht, M. van der Haar, A. M. van der Krann and J. W. Geus, Appl. Catal. A150 (1997) 365.Google Scholar
  8. [8]
    A. R. Belambe, R. Oukaci and J. G. Goodwin Jr., J. Catal. 166 (1997) 8.Google Scholar
  9. [9]
    D. Schanke, A. M. Hilmen, E. Bergene, K. Kinnari, E. Rytten, E. Adnanes and A. Holmen, Catal. Lett. 34 (1995) 269.Google Scholar
  10. [10]
    J. H. A. Martens, H. F. J. van't Blik and R. Prins, J. Catal. 97 (1986) 200.Google Scholar
  11. [11]
    J. Li and N. J. Coville, Appl. Catal. A181 (1999) 201.Google Scholar
  12. [12]
    J. S. Beck, J. C. Vartuli, W. J. Roth, M. E. Leonowicz, C. T. Kresge, K. D. Schmitt, C. T.-W. Chu, D. H. Olson, E. W. Sheppard, S. B. McCullen, J. B. Higgins and J. L. Schlenker, J. Am. Chem. Soc. 114 (1992) 10834.Google Scholar
  13. [13]
    C. T. Kresge, M. E. Leonowicz, W. J. Roth, J. C. Vartuli and J. S. Beck, Nature 359 (1992) 710.Google Scholar
  14. [14]
    E. Zhao, J. Feng, Q. Huo, N. Melosh, G. H. Fredrickson, B. F. Chmelka and G. D. Stucky, Science 279 (1998) 548.Google Scholar
  15. [15]
    E. Zhao, Q. Huo, J. Feng, B. F. Chmelka and G. D. Stucky, J. Am. Chem. Soc. 120 (1998) 6024.Google Scholar
  16. [16]
    C. Song and K. M. Reddy, Appl. Catal. A176 (1999) 1.Google Scholar
  17. [17]
    F. Schuth, A. Wingen and J. Sauer, Microporous and Mesoporous Mater. 44–45 (2001) 465.Google Scholar
  18. [18]
    J. Panpranot, J. G. Goodwin Jr. and A. Sayari, J. Catal. 211 (2002) 530.Google Scholar
  19. [19]
    A. Jentys, N. H. Pham, H. Vinek, M. Englisch and J. A. Lercher, Microporous Mater. 6 (1996) 13.Google Scholar
  20. [20]
    A. Jentys, N. H. Pham, H. Vinek, M. Englisch and J. A. Lercher, Catal. Today 39 (1998) 311.Google Scholar
  21. [21]
    S. Suvanto, J. Hukkamaki, T. T. Pakkanen and T. A. Pakkanen, Langmuir 16 (2000) 4109.Google Scholar
  22. [22]
    J. van der Loosdrecht, M. van der Haar, A. M. van der Kraan, A. J. van Dillen and J. W. Geus, Appl. Catal. A150 (1997) 365.Google Scholar
  23. [23]
    M. Kraum and M. Baerns, Appl. Catal. 186 (1999) 189.Google Scholar
  24. [24]
    M. P. Rosynek and C. A. Polansky, Appl. Catal. 73 (1991) 97.Google Scholar
  25. [25]
    S. Sun, N. Tsubaki and K. Fujimoto, Appl. Catal. A202 (2000) 121.Google Scholar
  26. [26]
    S. L. Soled, E. Iglesia, R. A. Fiato, J. E. Baumgartner, H. B. Vroman and S. Miseo, Paper 293, 18th North American Catalysis Society Meeting, Cancun, Mexico, 1–6 June 2003.Google Scholar
  27. [27]
    M. Kruk, M. Jaronice and A. Sayari, Microporous Mesoporous Mater. 35–36 (2000) 545.Google Scholar
  28. [28]
    L. Pasqua, F. Testa, R. Aiello, F. Di Renzo and F. Fajula, Microporous and Mesoporous Mater. 44–45 (2001) 111.Google Scholar
  29. [29]
    H. P. Klug and L. E. Alexander, X-ray Diffraction Procedures for Polycrystalline Amorphous Materials, 2nd ed. (Wiley, New York, 1974).Google Scholar
  30. [30]
    L. B. Backman, A. Rautiainen, A. O. I. Krause and M. Lindblad, Catal. Today 43 (1998) 11.Google Scholar
  31. [31]
    A. Kogelbauer, J. C. Webber and J. G. Goodwin Jr., Catal. Lett. 34 (1995) 259.Google Scholar
  32. [32]
    N. Mahata and V. Vishwanathan, J. Catal. 196 (2000) 262.Google Scholar
  33. [33]
    Y. Zhou, M. C. Wood and N. Winograd, J. Catal. 146 (1994) 82.Google Scholar
  34. [34]
    P. Johnston and R. W. Joyner, J. Chem. Soc. Faraday Trans. 89 (1993) 863.Google Scholar
  35. [35]
    J. M. Jablonski, M. Wolcyrz and L. Krajczyk, J. Catal. 173 (1998) 530.Google Scholar

Copyright information

© Plenum Publishing Corporation 2003

Authors and Affiliations

  • Joongjai Panpranot
    • 1
  • Surajee Kaewkun
    • 1
  • Piyasan Praserthdam
    • 1
  • James G. GoodwinJr.
    • 2
  1. 1.Center of Excellence on Catalysis and Catalytic Reaction Engineering, Department of Chemical EngineeringChulalongkorn UniversityBangkokThailand
  2. 2.Department of Chemical EngineeringClemson UniversitySouth CarolinaUSA

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