Interactions of methyloxirane with silica-supported Pd and Rh catalysts and its adsorption induced surface oxidation studied by IR spectroscopy

J. T. Kiss, I. Pálinkó

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

The adsorption characteristics of methyloxirane over Pd SiO"2 and Rh SiO"2 and its surface modifying properties were studied by IR spectroscopy. It was found that methyloxirane adsorbed irreversibly and the adsorption was dissociative resulting in relatively hydrogen-rich carbonaceous species strongly attached to the surface of the catalysts. Further, through monitoring the intensities and positions of CO vibration bands over the Rh SiO"2 catalysts it was found that methyloxirane oxidized the Rh surface as was suspected on the basis of kinetic measurements performed previously.

Original languageEnglish
Pages (from-to)81-84
Number of pages4
JournalJournal of Molecular Structure
Volume349
DOIs
Publication statusPublished - Apr 1 1995

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Silicon Dioxide
Infrared spectroscopy
Adsorption
Oxidation
Catalysts
Carbon Monoxide
Surface properties
Hydrogen
Kinetics
Monitoring
propylene oxide

ASJC Scopus subject areas

  • Spectroscopy
  • Analytical Chemistry
  • Inorganic Chemistry
  • Organic Chemistry

Cite this

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abstract = "The adsorption characteristics of methyloxirane over Pd SiO{"}2 and Rh SiO{"}2 and its surface modifying properties were studied by IR spectroscopy. It was found that methyloxirane adsorbed irreversibly and the adsorption was dissociative resulting in relatively hydrogen-rich carbonaceous species strongly attached to the surface of the catalysts. Further, through monitoring the intensities and positions of CO vibration bands over the Rh SiO{"}2 catalysts it was found that methyloxirane oxidized the Rh surface as was suspected on the basis of kinetic measurements performed previously.",
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AB - The adsorption characteristics of methyloxirane over Pd SiO"2 and Rh SiO"2 and its surface modifying properties were studied by IR spectroscopy. It was found that methyloxirane adsorbed irreversibly and the adsorption was dissociative resulting in relatively hydrogen-rich carbonaceous species strongly attached to the surface of the catalysts. Further, through monitoring the intensities and positions of CO vibration bands over the Rh SiO"2 catalysts it was found that methyloxirane oxidized the Rh surface as was suspected on the basis of kinetic measurements performed previously.

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