Catalysis Letters

, Volume 18, Issue 4, pp 401–407 | Cite as

The state of platinum in Pt-Al2O3 catalysts containing high chloride loading

  • Anantha R. Sethuraman
  • Burtron H. Davis


XPS data indicate that Pt in a highly chlorided (5–10% Cl) Pt-Al2O3 catalyst is present in a metallic form, and is not chlorided. Surface chloride concentration decreases following reduction in hydrogen; exposure to oxygen increases the surface chloride concentration. In contrast, reduction of chloride containing Pt-SiO2 catalyst dramatically reduces the chloride level; in addition, treatment with CCl4 appears to reoxidize at least some of the Pt in the Pt-SiO2 catalyst.


Platinum platinum-alumina catalysts isomerization catalyst chlorided Pt-Al2O3 XPS ESCA 


Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.


  1. [1]
    R.L. Jacobson, M.E. Kluksdahl and L.S. McCoy, API Proc. Div. of Refining 49 (1969) 504.Google Scholar
  2. [2]
    K.W. McHenry Jr., R.J. Bertolacini, H.M. Brennan, J.L. Wilson and H.S. Seelig,Actes 2nd Congr. Int. Catal, 1960, Vol. 2 (1961) p. 2293.Google Scholar
  3. [3]
    W.N. Lyster, dissertation, University of Houston, USA (1964).Google Scholar
  4. [4]
    A.G. Goble and P.A. Lawrence,Proc. 3rd Int. Congr. on Catalysts, Vol.1 (North-Holland, Amsterdam, 1965)p. 321.Google Scholar
  5. [5]
    N.R. Bursain, S.B. Kogan and Z.A. Davydova, Kinet. Katal. 6 (1965) 1046.Google Scholar
  6. [6]
    N.R. Bursain, S.B. Kogan and Z.A. Davydova, Kinet. Katal. 8 (1967) 1283.Google Scholar
  7. [7]
    H.E. Kluksdahl and R.J. Houston, J. Phys. Chem. 65 (1961) 1469.Google Scholar
  8. [8]
    M.F.L. Johnson and C.D. Keith, J. Phys. Chem. 67 (1963) 200.Google Scholar
  9. [9]
    British Patent 830,882, March 23, 1960 (to Engelhard).Google Scholar
  10. [10]
    British Patent 898,972, June 14, 1962 (to BP).Google Scholar
  11. [12]
    B.H. Davis, Clean gasoline reforming with superacid catalysts, #DE-AC22-90PC-90049, Final Report.Google Scholar
  12. [13]
    S.N. Russell and B.H. Davis, J. Catal. 89 (1984) 371.Google Scholar
  13. [14]
    J.M. Stencel, J. Goodman and B.H. Davis,Proc. 9th Int. Congr. on Catalysis, Vol.3 (Chemical Institute of Canada, Ottawa, 1988) p. 1291.Google Scholar

Copyright information

© J.C. Baltzer AG, Science Publishers 1993

Authors and Affiliations

  • Anantha R. Sethuraman
    • 1
  • Burtron H. Davis
    • 1
  1. 1.Center for Applied Energy ResearchUniversity of KentuckyLexingtonUSA

Personalised recommendations