Study of catalysis in olefin hydrogenation 1. The mechanism of La2O3 poisoning by water vapor, carbon monoxide, and carbon dioxide in the hydrogenation of ethylene

  • Kh. M. Minaehev
  • Yu. S. Khodakov
  • P. A. Makarov
Physical Chemistry
  • 27 Downloads

Conclusions

  1. 1.

    The poisoning of La2O3 by water, CO, and CO2 in low-temperature ethylene hydrogenation is due to adsorptional displacement of hydrogen.

     
  2. 2.

    At +20, −68, and −78°C water, CO, and CO2 adsorb inα, β, andγ forms, ethylene inα andβ forms, and hydrogen in anα form. Adsorptional displacement of C2H4 by these gases occurs only at 20°C.

     
  3. 3.

    The specific toxicity of these poisons for La2O3 in the ethylene hydrogenation falls off in the order: CO > CO2 > H2O.

     

Keywords

Hydrogenation Ethylene Toxicity Dioxide Carbon Dioxide 

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Copyright information

© Plenum Publishing Corporation 1979

Authors and Affiliations

  • Kh. M. Minaehev
    • 1
  • Yu. S. Khodakov
    • 1
  • P. A. Makarov
    • 1
  1. 1.N. D. Zelinskii Institute of Organic ChemistryAcademy of Sciences of the USSRMoscow

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