Effects of Surface Modifiers in the Liquid-Phase Hydrogenation of Olefins over Silica-Supported Pt, Pd and Rh Catalysts II. Thiophene and CS2

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Abstract

The poisoning effects of CS2 and thiophene on the hydrogenation of olefins with different structures (cyclohexene, 1-hexene) were studied over silica-supported Pt, Pd and Rh catalysts in the liquid phase, at ambient temperature. The rate of hydrogenation decreased linearly upon addition of CS2 over Pt and Pd until the reaction ceased. The hydrogenation activity of Rh/SiO2 could also be eliminated. Thiophene inhibited hydrogenation as well, however, the reaction could not be stopped. Curved activity vs apparent thiophene coverage graphs characterize the poisoning process. Carbon disulfide adsorbed over the catalysts completely, while thiophene was strongly bonded only over the most active sites.

Original languageEnglish
Pages (from-to)603-608
Number of pages6
JournalStudies in Surface Science and Catalysis
Volume88
Issue numberC
DOIs
Publication statusPublished - 1994

Fingerprint

Thiophenes
Alkenes
Thiophene
thiophenes
Silicon Dioxide
alkenes
Olefins
Hydrogenation
hydrogenation
liquid phases
Silica
Catalyst poisoning
silicon dioxide
catalysts
Catalysts
poisoning
Liquids
Carbon Disulfide
Carbon disulfide
carbon disulfide

ASJC Scopus subject areas

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

Cite this

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abstract = "The poisoning effects of CS2 and thiophene on the hydrogenation of olefins with different structures (cyclohexene, 1-hexene) were studied over silica-supported Pt, Pd and Rh catalysts in the liquid phase, at ambient temperature. The rate of hydrogenation decreased linearly upon addition of CS2 over Pt and Pd until the reaction ceased. The hydrogenation activity of Rh/SiO2 could also be eliminated. Thiophene inhibited hydrogenation as well, however, the reaction could not be stopped. Curved activity vs apparent thiophene coverage graphs characterize the poisoning process. Carbon disulfide adsorbed over the catalysts completely, while thiophene was strongly bonded only over the most active sites.",
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N2 - The poisoning effects of CS2 and thiophene on the hydrogenation of olefins with different structures (cyclohexene, 1-hexene) were studied over silica-supported Pt, Pd and Rh catalysts in the liquid phase, at ambient temperature. The rate of hydrogenation decreased linearly upon addition of CS2 over Pt and Pd until the reaction ceased. The hydrogenation activity of Rh/SiO2 could also be eliminated. Thiophene inhibited hydrogenation as well, however, the reaction could not be stopped. Curved activity vs apparent thiophene coverage graphs characterize the poisoning process. Carbon disulfide adsorbed over the catalysts completely, while thiophene was strongly bonded only over the most active sites.

AB - The poisoning effects of CS2 and thiophene on the hydrogenation of olefins with different structures (cyclohexene, 1-hexene) were studied over silica-supported Pt, Pd and Rh catalysts in the liquid phase, at ambient temperature. The rate of hydrogenation decreased linearly upon addition of CS2 over Pt and Pd until the reaction ceased. The hydrogenation activity of Rh/SiO2 could also be eliminated. Thiophene inhibited hydrogenation as well, however, the reaction could not be stopped. Curved activity vs apparent thiophene coverage graphs characterize the poisoning process. Carbon disulfide adsorbed over the catalysts completely, while thiophene was strongly bonded only over the most active sites.

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