Low pressure hydrogen storage
Na + H20 -> NaOH + 1/2 H2 then 2 H2 + O2 -> H2O.
Even if I confess to you that I find it a little unconscious to run vehicles which spit soda (whatever say those who suppose that it will be condensed and recovered
) there is an "interesting" process to produce this "fuel":
A energy tower vaporizes seawater, and uses it to generate electricity. The vaporized sea water will not fail to leave salt, gradually deposited on the inner surface of the tower and to "harvest" regularly. Once collected, this salt can pass through a concentrated solar liquefaction system as described by Rémundo in the low pressure hydrogen storage message: heating the brine to 600 ° C, then electrolysis (with the power of the tower if necessary) to produce sodium and chlorine.
It only remains to enjoy freely and joyfully the possible uses of pure water produced by the tower (recovery of saturated air, and condensed water), sodium, and chlorine.
I admit that I prefer the primary uses of the tower: production of unsalted water and electricity, but if an energy tower, a simple concentrated solar power plant, a favorable climate and a little seawater allow a complete process to produce dichlor, sodium and pure au and perhaps even a little electricity, why not?
Another source of energy with seawater, I just discovered it: solar ponds: http://www.outilssolaires.com/Jeux/prin-etang.htm
