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https://reneweconomy.com.au/csiro-demonstrates-new-beam-down-solar-reactor-to-accelerate-green-hydrogen-production/>
"Australia’s premier science agency CSIRO says it has successfully demonstrated
a new way to produce green hydrogen using a combination of concentrated solar
power (CSP) and modified metal oxide.
Backed by funding from the Australian Renewable Energy Agency (ARENA), the
so-called “beam-down” solar reactor was developed at CSIRO’s Newcastle Energy
Centre.
Unlike traditional CSP technology, which concentrates sunlight onto the top of
a tower, the new design directs it down onto a platform, a little like using a
magnifying glass to focus sunlight.
The technology redirects the sunlight downward into a separate solar reactor
located on a lower platform, where the concentrated heat is used to power
electrolysis – a chemical reaction that splits water into its component atoms,
hydrogen and oxygen.
The key to CSIRO’s beam-down design – the first time this technology has been
demonstrated in Australia – is located in the solar reactor, where the use of a
modified metal oxide improves the ability to absorb and release oxygen at a
much lower temperature, the oxygen exchange core to the production of green
hydrogen.
According to CSIRO, the modified metal oxide – called doped ceria and developed
by researchers at Niigata University in Japan – releases some oxygen atoms when
heated by solar energy.
But, when exposed to steam, it absorbs oxygen from water – leaving hydrogen gas
to be captured and stored for later use as a fuel or in industrial processes.
The doped ceria is then ready to be repeatedly reused."
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*** Xanni ***
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mailto:xanni@xanadu.net Andrew Pam
http://xanadu.com.au/ Chief Scientist, Xanadu
https://glasswings.com.au/ Partner, Glass Wings
https://sericyb.com.au/ Manager, Serious Cybernetics
