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re: US Navy 'game-changer': converting seawater into fuel

Posted on 4/8/14 at 4:29 pm to
Posted by WildTchoupitoulas
Member since Jan 2010
44071 posts
Posted on 4/8/14 at 4:29 pm to
quote:

Don't have time to research the energy technology.
Are they using hydrolysis to separate the water molecules into the base H2 & O atoms?

The NRL process begins by extracting carbon dioxide and hydrogen from seawater. As seawater passes through a specially built cell, it is subjected to a small electric current. This causes the seawater to exchange hydrogen ions produced at the anode with sodium ions. As a result, the seawater is acidified. Meanwhile, at the cathode, the water is reduced to hydrogen gas and sodium hydroxide is formed. The end product is hydrogen and carbon dioxide gas, and the sodium hydroxide is added to the leftover seawater to neutralize its acidity. In the next step, the hydrogen and carbon dioxide are passed into a heated reaction chamber with an iron catalyst. The gases combine and form long-chained unsaturated hydrocarbons with methane as a by-product. The unsaturated hydrocarbons are then made to form longer hydrocarbon molecules containing six to nine carbon atoms. Using a nickel-supported catalyst, these are then converted into jet fuel.

LINK
Posted by Spirit of Dunson
Member since Mar 2007
23111 posts
Posted on 4/8/14 at 4:46 pm to
quote:

LINK

Thanks!
Looks similar to this

So
Anode:
H2O + NaCl (in presence of current) --> NaOH + HCl

Cathode:
H2O + Na+ ---> NaOH + 1/2H2

Byproduct:
????? ---> CO2

Neutralization:
NaOH + HCl(aq) ---> NaOH + H2O

Hydrocarbon Production:
H2 + CO2 ---> Rn

Chain Expansion:

Rn + Rn ---> Rnn

Jet fuel Production:

Rnn (catalyst) ---> Jetfuel!

GAME-CHANGER!
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