Surface state of working Pt IN n-hexane reforming: hydrogen effect on the formation of trapped hydrocarbons

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Abstract

Transformation of n-hexane has been investigated as a function of partial pressure of hydrogen at 563K over Pt catalysts including Euro-Pt-1. The carbon coverage and the fraction of free sites on the working catalysts together with product distributions have been determined. The conclusions are as follows: (1) The partial pressure of hydrogen regulates the coverage of the firmly held hydrocarbons which in turn for geometric/electronic reasons affect the product selectivity; (2) Independently of the size of the Pt particles, with the increase of the partial pressure of H2, the only reaction whose selectivity has been observed to increase continuously is fragmentation. Extrapolation of the selectivity values to large excess of H2 seems to indicate that the structure sensitivity of the product selectivity ceases at large H2/nH ratios.

Original languageEnglish
Pages (from-to)173-184
Number of pages12
JournalCatalysis Today
Volume5
Issue number2
DOIs
Publication statusPublished - 1989

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Surface states
Reforming reactions
Hydrocarbons
Hexane
Partial pressure
Hydrogen
Catalysts
Extrapolation
Carbon
n-hexane

ASJC Scopus subject areas

  • Catalysis
  • Process Chemistry and Technology

Cite this

Surface state of working Pt IN n-hexane reforming : hydrogen effect on the formation of trapped hydrocarbons. / Sárkány, A.

In: Catalysis Today, Vol. 5, No. 2, 1989, p. 173-184.

Research output: Contribution to journalArticle

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