The Effect of Potassium on the Hydrogenation of CO and Co2 Over Supported Rh Catalysts.

Abstract

The reactions of hydrogen with carbon monoxide and carbon dioxide over Rh/Al2O3 and Rh/TiO2 films, some of which contained potassium as an additive, have been investigated. For the CO hydrogenation reaction the presence of potassium caused the dissociation or desorption of the gem dicarbonyl, linear CO, and carbonyl hydride species, while it led to an enhancement of the bridged carbonyl spe cies. For Rh/TiO2 films the hydrogenation of CO produced acetone and acetaldehyde as oxygenated products; the bridged carbonyl species was the likely precursor of these products. For the CO2 hydrogenation reaction the presence of potassium caused the dissociation or desorption of all CO species, and oxygenated products were not produced. Potassium significantly poisoned both reactions toward the production of methane.

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Document Details

Document Type
Technical Report
Publication Date
Jul 15, 1986
Accession Number
ADA171553

Entities

People

  • C. H. Dai
  • S. D. Worley

Organizations

  • Auburn University

Tags

Communities of Interest

  • Advanced Electronics

DTIC Thesaurus Topics

  • Abstracts
  • Additives (Chemicals)
  • Aluminum Oxides
  • Carbon Dioxide
  • Carbon Monoxide
  • Chemical Synthesis
  • Chemistry
  • Classification
  • Dielectric Gases
  • Hydrogen
  • Infrared Spectra
  • Materials
  • Materials Science
  • Plastic Explosives
  • Spectra
  • Spectroscopy
  • Universities

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  • Chemistry

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  • Electrochemical Engineering/ Fuel Cell Technologies
  • Organic Chemistry