Effect of Sulfur on the Performance of Pt/KL Hexane Aromatization Catalyst

J. L. Kao, G. B. McVicker, M. M.J. Treacy, S. B. Rice, J. L. Robbins, W. E. Gates, J. J. Ziemiak, V. R. Cross, T. H. Vanderspurt

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5 Scopus citations


The sulfur sensitivity of a monofunctional Pt/KL catalyst has been investigated. Sulfur, in the ppb range, introduced in the form of thiophene functions as a stiochiometric poison and lowers, thereby, the number of available Pt sites. Additionally, feed sulfur greatly accelerates Pt agglomeration. Pt/KL deactivation resulting from metal agglomeration primarily occurs by blockage of KL channels by 10–50 Å Pt and/or PtS particles. The sulfur sensitivity of the Pt/KL catalyst is highly dependent upon the molecular structure of the sulfur source. The order of sensitivity, at constant sulfur level, is thiophene ≫ 1,2-benzodiphenylene sulfide > propanethiol > sulfolane.

Original languageEnglish (US)
Pages (from-to)1019-1030
Number of pages12
JournalStudies in Surface Science and Catalysis
Issue numberC
StatePublished - Jan 1 1993
Externally publishedYes

ASJC Scopus subject areas

  • Catalysis
  • Condensed Matter Physics
  • Physical and Theoretical Chemistry
  • Surfaces, Coatings and Films
  • Materials Chemistry


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