[AR] Re: ammonia borane
- From: Henry Spencer <hspencer@xxxxxxxxxxxxx>
- To: Arocket List <arocket@xxxxxxxxxxxxx>
- Date: Mon, 1 Mar 2021 19:24:43 -0500 (EST)
On Tue, 2 Mar 2021, Troy Prideaux wrote:
GH2 from hydrolysis of water by solar cells.
Prohibitively expensive by comparison, for any practical purpose,
except in what are basically tech demos that don't have to make
economic sense. Commercial GH2 is from petroleum.
How up-to-date is that claim?
As far as I know -- with the caveat that it's an area I don't actively
monitor -- it's still current. There is lots of hype about solar-powered
electrolysis, but no reality behind it yet. Electrolysis is hideously
energy-intensive, and solar cells are not a particularly cheap energy
source (even allowing for the fact that this application wouldn't need
energy storage). Making GH2 from petroleum -- usually natural gas -- is
*much* cheaper, and so long as the producers don't have to pay for the
side effects of the CO2 release, it's likely to stay that way.
Henry
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