Effect of Sulfur on the Performance and on the Particle Size and Location of Platinum in Pt/KL Hexane Aromatization Catalysts

G. B. Mcvicker, J. L. Kao, J. J. Ziemiak, W. E. Gates, J. L. Robbins, Michael Treacy, S. B. Rice, T. H. Vanderspurt, V. R. Cross, A. K. Ghosh

Research output: Contribution to journalArticle

75 Citations (Scopus)

Abstract

Sulfur, introduced to a working Pt/KL. hexane aromatization catalyst in the form of thiophene, functions as an extremely potent poison by reducing the number of Pt sites accessible within the channels of the KL zeolite. The intrinsic catalytic activity and selectivity of in-channel Pt sites, however, is not significantly modified by the presence of sulfur on the catalyst. Extremely low thiophene feed sulfur concentrations in the 50-200 wppb range accelerate Pt agglomeration. Catalyst deactivation, resulting primarily from metals agglomeration, most likely occurs by multiple blockage of KL channels by small (10-20 Å) Pt and/or Pt-sulfur clusters.

Original languageEnglish (US)
Pages (from-to)48-61
Number of pages14
JournalJournal of Catalysis
Volume139
Issue number1
DOIs
StatePublished - Jan 1993
Externally publishedYes

Fingerprint

Aromatization
Hexanes
Platinum
Hexane
Sulfur
platinum
sulfur
Particle size
catalysts
Thiophenes
Catalysts
Thiophene
agglomeration
thiophenes
Agglomeration
Zeolites
poisons
Catalyst deactivation
Catalyst selectivity
Poisons

ASJC Scopus subject areas

  • Process Chemistry and Technology
  • Catalysis

Cite this

Effect of Sulfur on the Performance and on the Particle Size and Location of Platinum in Pt/KL Hexane Aromatization Catalysts. / Mcvicker, G. B.; Kao, J. L.; Ziemiak, J. J.; Gates, W. E.; Robbins, J. L.; Treacy, Michael; Rice, S. B.; Vanderspurt, T. H.; Cross, V. R.; Ghosh, A. K.

In: Journal of Catalysis, Vol. 139, No. 1, 01.1993, p. 48-61.

Research output: Contribution to journalArticle

Mcvicker, GB, Kao, JL, Ziemiak, JJ, Gates, WE, Robbins, JL, Treacy, M, Rice, SB, Vanderspurt, TH, Cross, VR & Ghosh, AK 1993, 'Effect of Sulfur on the Performance and on the Particle Size and Location of Platinum in Pt/KL Hexane Aromatization Catalysts', Journal of Catalysis, vol. 139, no. 1, pp. 48-61. https://doi.org/10.1006/jcat.1993.1006
Mcvicker, G. B. ; Kao, J. L. ; Ziemiak, J. J. ; Gates, W. E. ; Robbins, J. L. ; Treacy, Michael ; Rice, S. B. ; Vanderspurt, T. H. ; Cross, V. R. ; Ghosh, A. K. / Effect of Sulfur on the Performance and on the Particle Size and Location of Platinum in Pt/KL Hexane Aromatization Catalysts. In: Journal of Catalysis. 1993 ; Vol. 139, No. 1. pp. 48-61.
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AU - Robbins, J. L.

AU - Treacy, Michael

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