I do what it is practical to do, the impossible - often takes a little longer.
Hydrogen to heat homes a terrible idea: Gov to keep funding it.
- Thread starter IT Minion
- Start date
I do what it is practical to do, the impossible - often takes a little longer.
It is, however, unsurprisingly (very) abundant within a few tens of miles of its northern boundary.
Sea water, is not the best, for splitting into H and O.
There certainly is, but desalination is a very expensive process.
Scientists produce green hydrogen from seawater
SCIENTISTS have developed a system that can produce green hydrogen directly from seawater without the need for any pre-treatment processes like desalination. The team behind the development, which involves the introduction of a Lewis acid layer on a transition metal oxide catalyst, say the...
www.thechemicalengineer.com
"Lewis acid layer on a metal oxide catalyst
Scientists working on the problem have now found another solution using cheaper materials. Instead of using catalysts made of rare precious metals to dynamically split water molecules and capture hydroxyl anions, the team introduced a Lewis acid layer (chromium oxide), on a transition metal oxide catalyst, which promotes water splitting to H and OH. “This is a general strategy that can be applied to different catalysts without the need for specifically engineered catalysts and electrolyser design,” write the authors in their research paper.
Captured hydroxyl anions can then be oxidised into oxygen molecules with anodic potential, and as the process produces large amounts of OH−, it reduces the amount of Cl− that is formed. “These results demonstrate that the harmful Cl− chemistry in direct seawater electrolysis can indeed be avoided by preferentially enriching OH− on the electrode surface,” the authors write.
Additionally, the team only filtered the seawater to remove solids and microorganisms, but did not purify it beforehand, which is a step that is normally needed when using conventional electrolysers.
“The performance of a commercial electrolyser with our catalysts running in seawater is close to the performance of platinum/iridium catalysts running in a feedstock of highly purified deionised water,” explains co-author Yao Zheng at the University of Adelaide, adding that the experiment is nearly 100% efficient when producing green hydrogen from splitting seawater. As such is could help negate the need to use freshwater – a commodity that is already scarce.
The team hopes to scale up their project for commercial production in ammonia synthesis, and to generate hydrogen fuel cells. "
Lots of idea appear, but never prove to be practical, or to scale up.
And lots of idea do.
Unless you have limitless supplies of low cost energy on site
Like a solar farm in North Africa.
There was some house built in weybride or near there that used ice tech for heating it was going to ???
Apparently if you melt ice and re freeze it you create energy that can be used to heat the prop ?
It was some thing to do with a German house builder and Viessman were involved ?
All gone quiet and have heard nowt about it
Apparently if you melt ice and re freeze it you create energy that can be used to heat the prop ?
It was some thing to do with a German house builder and Viessman were involved ?
All gone quiet and have heard nowt about it
Like so many ideas, they prove too expensive/impractical/too expensive..
Depending on precisely what's being claimed, that's highly unlikely. It would violate various laws of physics.
