I'm trying to model some industrial processes and having a hard time finding information about the Sabatier reaction. The sabatier reaction combines CO2 (and possibly CO) with H2 to produce H2O and CH4.

On the one hand this reaction is exothermic. On the other hand it requires high heat and pressure. Does the reactor need initial heating and pressurizing of the gases, and then is it self-sustaining (or rather requiring cooling)?

What is clear is that some energy is be needed to compress gases and flow them over the catalysts.

Are there any estimates of how much energy a reactor would use? I understand that scale would also be an important parameter, but any preliminary estimates are useful to me.

  • 1
    $\begingroup$ Apparently you want to develop an industrial process, and you don't know thermochemistry. Before planning any industrial reactor, you should first study this field in high priority. It is not difficult, as it is done in high schools. $\endgroup$
    – Maurice
    Mar 14, 2021 at 17:44
  • $\begingroup$ It is a chemical kinetics issue. Raising the temperature increases the rate of the reaction. $\endgroup$ Mar 14, 2021 at 20:25
  • $\begingroup$ Useful paper on this topic regarding the need to initially heat and then remove heat from reactor. pubs.rsc.org/en/content/articlelanding/2018/se/… $\endgroup$
    – dlight
    Mar 15, 2021 at 18:28


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