Methane cracking: Difference between revisions

Methane cracking (view source)

153 bytes added , 31 May 2022

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 ==Energy viability==
-Every methane-cracking method ''invented so far'' is a ''net loss'' of energy. Meaning that it takes more energy to crack the methane than you ultimately get from burning the hydrogen. But in theory, this need not be true:<br />
+Every methane-cracking method ''invented so far'' is a '''net loss''' of energy. Meaning that it takes more energy to crack the methane than you ultimately get from burning the hydrogen.
-: CH4 -> C + 2 H2 (endothermic: 74.850 kJ/mol)<br />
-: 2 H2 + O2 -> 2 H2O (exothermic: 285.820 kJ/mol)
+But '''in theory''', this need not be true:
+: Cracking the methane:
+:: CH4 &rarr; C + 2 H2 &emsp; &emsp; ({{p2|energy in:|'''endo'''thermic reaction}} 74.850 kJ/mol)<br />
+: Burning the hydrogen:
+:: 2 H2 + O2 &rarr; 2 H2O &emsp; ({{p2|energy out:|'''exo'''thermic reaction}} 285.820 kJ/mol)
 ===Hydrogen production efficiency comparison===
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 |Methane cracking
 |Theoretical best case
-|382% {{p|see chemistry equation above}}
+|382% {{p|from the chemistry equations above}}
 |-
 |'''Not''' methane cracking