3 ms·

Fuel hydrogen is typically produced via steam reforming [0] and subsequent distillation/liquification. [0]: https://en.wikipedia.org/wiki/Steam_reforming https

• vbezhenar 7y ago
  CH4 + H2O ⇌ CO + 3 H2 CO + H2O ⇌ CO2 + H2 For every tonne of hydrogen produced this way, 9 tonnes of CO2 is also produced.
  • seventh-chord 7y ago
    Isnt the ratio closer to ~6 tons of CO2 per ton of H2? You get CO2 + 4 H2, which weigh 44 and 4*2 respectively. Also, isnt this a non-issue, because (at least in theory) the reaction is contained in your converter plant, where you can collect the CO2?
    • vbezhenar 7y ago
      That's quote from wikipedia. I think you're right with your calculations, so I don't really know where this number came from. What're you going to do with that collected CO2 other than releasing it to the atmosphere?
      • namibj 7y ago
        Separating from other gasses, followed by sequestering.
        • vbezhenar 7y ago
          I guess that it would cost a lot. Technically you can do that with traditional coal plants.
          • namibj 7y ago
            Those don't produce fuel. They produce electricity.