Continuous Toluene Hydrogenation System Using Compressed Carbon Dioxide

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  • Hiyoshi Norihito
    Research Center for Compact Chemical Process, National Institute of Advanced Industrial Science and Technology (AIST)
  • Masuda Yoshio
    Research Center for Compact Chemical Process, National Institute of Advanced Industrial Science and Technology (AIST)
  • Rode Chandrashekhar V.
    Research Center for Compact Chemical Process, National Institute of Advanced Industrial Science and Technology (AIST)
  • Sato Osamu
    Research Center for Compact Chemical Process, National Institute of Advanced Industrial Science and Technology (AIST)
  • Osada Mitsumasa
    Research Center for Compact Chemical Process, National Institute of Advanced Industrial Science and Technology (AIST)
  • Shirai Masayuki
    Research Center for Compact Chemical Process, National Institute of Advanced Industrial Science and Technology (AIST)

書誌事項

公開日
2010
DOI
  • 10.1252/jcej.09we054
公開者
公益社団法人 化学工学会

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説明

The effect of the addition of compressed carbon dioxide in continuous hydrogenation of toluene has been evaluated with process simulation software and tested with a fixed-bed reactor. The simulation results show that the temperature rise is significantly suppressed in the presence of compressed carbon dioxide and that the equilibrium conversion of toluene (toluene/hydrogen = 1/3) reaches 99.9%, whereas around 60% in the absence of carbon dioxide. Experimental results show that the continuous hydrogenation of toluene (toluene/hydrogen/carbon dioxide = 1/3.1/31, inlet temperature: 20 °C, outlet temperature: <70 °C, and total pressure: 11 MPa) over activated carbon-supported rhodium catalysts proceeds without deactivation. The conversion of toluene reaches 99% and methylcyclohexane is the only product detected.

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