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

Research output: Contribution to journalArticlepeer-review

4 Scopus citations

Abstract

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
Volume75
Issue numberC
DOIs
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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