Advertisement

Korean Journal of Chemical Engineering

, Volume 8, Issue 3, pp 177–182 | Cite as

Characterization of alumina modified with sulfate and phosphate

  • Seo Il Kim
  • Seong Ihl Woo
Article
  • 71 Downloads

Abstract

The acidity and surface properties of alumina modified with sulfate (A1-S) and phosphate (Al-P) were characterized by IR, NH3TPD and 1-butene isomerization reaction. The Point of Zero Charge (PZC) of modified alumina and the amount of Mo anion adsorbed on modified alumina were measured. The PZC of modified alumina and the amount of Mo anion adsorbed on modified alumina decreased with increasing modifier content. Non-linear relationship between the PZC and Mo uptake in modified alumina was observed in Al-S and Al-P. The bonding mode of sulfate on alumina changed with increasing sulfate content. The Bronsted acid site appeared in alumina modified with sulfate of 10 wt%.

Keywords

Sulfate Content Pure Alumina Alumina Surface Bonding Mode Bronsted Acid Site 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

Preview

Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.

References

  1. 1.
    van Veen, J. A. R., Hendriks, P. A. J. M., Romes, E. J. G. M. and Andrea, R. R.:J. Phys. Chem.,94, 5275 (1990).CrossRefGoogle Scholar
  2. 2.
    Mensch, C. T. J., van Veen, J. A. R., van Wingerden, B. and van Dijk, M. P.:J. Phys. Chem.,92, 4961 (1988).CrossRefGoogle Scholar
  3. 3.
    Spanos, N., Vordonis, L., Kordulis, Ch. and Lycourghiotis, A.:J. Catal.,124, 301(1990).CrossRefGoogle Scholar
  4. 4.
    Spanos, N., Vordonis, L., Kordulis, Ch. and Lycourghiotis, A.:J. Catal.,124, 315(1990).CrossRefGoogle Scholar
  5. 5.
    Vordonis, L., Koutsoukos, P. G. and Lycourghiotis, A.:Langmuir,2, 281(1986).CrossRefGoogle Scholar
  6. 6.
    Vordonis, L., Koutsoukos, P. G. and Lycourghiotis, A.:J. Catal.,98, 296(1986).CrossRefGoogle Scholar
  7. 7.
    Vordonis, L., Koutsoukos, P. G. and Lycourghiotis, A.:J. Catal.,101, 186 (1986).CrossRefGoogle Scholar
  8. 8.
    Mulcahy, F. M., Houalla, M. and Hercules, D. M.:J. Catal.,106, 210 (1987).CrossRefGoogle Scholar
  9. 9.
    Mulcahy, F. M., Houalla. M. and Hercules, D. M.: in “ Proc. of the 9th International Congress on Catalysis”, Calgary’, Canada, p.1968, 1988.Google Scholar
  10. 10.
    Mieth, J. A., Schwarz, J. A., Huang, Y. J. and Fung, S. C.:J. Catal.,122, 202(1990).CrossRefGoogle Scholar
  11. 11.
    Saur, 0., Bensitel, M., Mohammed Saad, A. B., Lavalley, J. C., Tripp, C. P. and Morrow, B. A.:J. Catal.,99, 104(1986).CrossRefGoogle Scholar
  12. 12.
    Jin, T., Yamaguchi, T. and Tanabe, K.:J. Phys. Chem.,90, 4794 (1986).CrossRefGoogle Scholar
  13. 13.
    Yamaguchi, T., Jin, T. and Tanabe, K.:J. Phys. Chem.,90, 3148(1986).CrossRefGoogle Scholar
  14. 14.
    Kiviat, F. E. and Petrakis, L:J. Phys. Chem.,11, 1232 (1973).CrossRefGoogle Scholar
  15. 15.
    Przystajko, W., Fiedorow, R. and Dalla Lana, I. G.:Appl. Catal.,15, 265 (1985).CrossRefGoogle Scholar
  16. 16.
    Kayo, A., Yamaguchi, T. and Tanabe, K.:J. Catal.,83, 99(1983).CrossRefGoogle Scholar
  17. 17.
    Okamoto, Y. and Imanaka, T.:J. Catal. 83, 99 (1983).CrossRefGoogle Scholar
  18. 18.
    Brunelle, J. P.:Pure. Appl. Chem.,50, 1211 (1978).Google Scholar
  19. 19.
    Morales, A., Ramirez de Agudelo, M. M. and Hernandez, F.:Appl. Catal.,41, 261 (1988).CrossRefGoogle Scholar
  20. 20.
    Fitz, Jr. C.W. and Rase, H. F.:Ind. Eng. Chem. Prod. Res. Dev.,11, 40(1983).CrossRefGoogle Scholar
  21. 21.
    Medema, J.:J. Catal.,37, 91(1975).CrossRefGoogle Scholar
  22. 22.
    Gerberich, H. R. and Keith Hall, W.:J. Catal.,5, 99 (1966).CrossRefGoogle Scholar

Copyright information

© Korean Institute of Chemical Engineering 1991

Authors and Affiliations

  • Seo Il Kim
    • 1
  • Seong Ihl Woo
    • 1
  1. 1.Department of Chemical EngineeringKorea Advanced Institute of Science and TechnologySeoulKorea

Personalised recommendations