Kinetics of the liquid-phase hydrogenation of aromatic nitro-compounds in the presence of tungsten carbide catalyst

G. Horányi, György Vértes

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Abstract

The kinetics of liquid-phase hydrogenation of aromatic nitro-compounds have been studied in the presence of tungsten carbide catalyst. The effects of temperature and hydrogen partial pressure on the hydrogenation rate have been investigated. It has been shown that the addition (deposition) of small amounts of noble metals (100 - 1000 p.p.m.) results in a significant increase in the catalytic activity of tungsten carbide. From a comparison of our results with those for electrochemical oxidation of hydrogen at tungsten carbide electrodes it may be assumed that the rate determining step of hydrogenation is the activation (dissociative adsorption) of hydrogen.

Original languageEnglish
Pages (from-to)827-829
Number of pages3
JournalJournal of the Chemical Society, Perkin Transactions 2
Issue number8
DOIs
Publication statusPublished - 1975

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Nitro Compounds
Hydrogenation
Hydrogen
Catalysts
Kinetics
Liquids
Electrochemical oxidation
Precious metals
Partial pressure
Catalyst activity
Chemical activation
Adsorption
Electrodes
tungsten carbide
Temperature

ASJC Scopus subject areas

  • Chemistry(all)

Cite this

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AB - The kinetics of liquid-phase hydrogenation of aromatic nitro-compounds have been studied in the presence of tungsten carbide catalyst. The effects of temperature and hydrogen partial pressure on the hydrogenation rate have been investigated. It has been shown that the addition (deposition) of small amounts of noble metals (100 - 1000 p.p.m.) results in a significant increase in the catalytic activity of tungsten carbide. From a comparison of our results with those for electrochemical oxidation of hydrogen at tungsten carbide electrodes it may be assumed that the rate determining step of hydrogenation is the activation (dissociative adsorption) of hydrogen.

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