Archive:000/Hydrogen gas: Difference between revisions

Archive:000/Hydrogen gas (view source)

16 bytes removed , 31 May 2022

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 Currently most hydrogen is produced from natural gas via [[wikipedia:steam reforming|steam reforming]], but this emits just as much CO2 as burning the natural gas itself.
-There's another (similar) process called [[methane cracking]] which takes in natural gas, and produces hydrogen gas + solid carbon (not CO2) which could be buried in the ground or used for something else. The main problem, currently, is that it takes more energy than you ultimately get from burning the hydrogen gas. In theory, it doesn't have to. {{p|Chemistry equations:<br />CH4 -> C + 2 H2 (endothermic: 74.850 kJ/mol)<br />2 H2 + O2 -> 2 H2O (exothermic: 285.820 kJ/mol)}}
+There's another (similar) process called [[methane cracking]] which takes in natural gas, and produces hydrogen gas + solid carbon (not CO2).
+The main problem, currently, is that it's a ''net loss'' of energy {{x|it takes more energy than you ultimately get by burning the hydrogen gas}}. In theory, it doesn't have to be.
+{{p|Chemistry equations:<br />CH4 &rarr; C + 2 H2 (endothermic: 74.850 kJ/mol)<br />2 H2 + O2 &rarr; 2 H2O (exothermic: 285.820 kJ/mol)}}
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