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You can turn hydrogen into methane in an exothermic way, which you can store very easily.
by kuschku 5y ago
You can turn hydrogen into methane in an exothermic way, which you can store very easily.
- beervirus 5y agoThat completely defeats the purpose of using hydrogen instead of methane.
- amanaplanacanal 5y agoAs long as it isn't adding fossil carbon, it seems fine to me.
- beervirus 5y agoWhere would the carbon come from that turns hydrogen into methane? It’s not being sucked out of the air.
- masklinn 5y ago> It’s not being sucked out of the air. It could be if it comes from wood or charcoal (though that seems unlikely).
- Lio 5y agoMethane is reputedly much worse for global warming than CO2 though. I’ve heard 4x worse before. If that’s true then inevitable leaks of unburnt methane would not be a good thing at all.
- leoedin 5y agoIt is, but only for a short time - I think 9 years or so. It's broken down in the atmosphere into CO2 and water.
- mech422 5y agoSo its worse the C02 for 9 years... And then _becomes_ CO2 ? Not seeing how this is a win?
- leoedin 5y agoAs long as the carbon contained in that methane comes from environmental carbon, rather than fossil carbon, the net effect on CO2 levels is 0. If a tree absorbs CO2 to grow, dies, gives off methane and that methane eventually turns back into CO2, it's not a problem. That's just the natural carbon cycle. The problem is that we're constantly injecting more carbon from deep underground into that carbon cycle. It's why biofuels are essentially carbon neutral.
- hannob 5y agoWhich is very energy intensive, as you need to capture CO2 for this to work. And it adds the problem of methane leakages (methane itself is a powerful greenhouse gas). The most promising chemical to use as a hydrogen carrier is ammonia. It has its problems, too, but it doesn't contain carbon, which is a huge bonus.