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[Phys.org] From lemons to lemonade: Reaction uses carbon dioxide to make carbon-based semiconductor

post #1 of 15
5/21/12 at 12:19pm
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A materials scientist at Michigan Technological University has discovered a chemical reaction that not only eats up the greenhouse gas carbon dioxide, it also creates something useful. And, by the way, it releases energy.

This is actually really cool.
A way to get rid of Carbon DiOxide and to generate energy in the process.

Im not sure how cost effective it is, but its still an awesome discovery.
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post #2 of 15
5/21/12 at 12:39pm
Sweet find!
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post #3 of 15
5/21/12 at 12:49pm
Damn that gets hot, not really a computer-type semiconductor, but great for making energy!
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post #4 of 15
5/21/12 at 1:43pm
I'm VERY skeptical about the fact that it is exothermic.
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post #5 of 15
5/21/12 at 1:46pm
  • Shrak
  • (╯°□°）╯︵ ┻━┻
Wonder if it'll eat up enough CO2 to make a difference... But the energy side is still amazing as well.
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post #6 of 15
5/21/12 at 1:49pm
The fact that it is exothermic is a breakthrough in of itself. Would love for this to be verified by other independent researchers.
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post #7 of 15
5/21/12 at 3:13pm
Also needing to be verified: whether the total energy cost of the experiment (including extracting and refining the lithium, precipitating and collecting nitrogen, combining them to form lithium nitride; precipitating and collecting carbon dioxide; transporting all the materials to the same physical location) results in the production of more CO2 than is used. If not, then you're not gaining any ground on reducing CO2 levels.
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post #8 of 15
5/21/12 at 4:03pm
Like all great ideas of this type, like the HHO Gas engine that was made in the 70's "Brown's Gas", I'm sure this will tech will be bought by some multibillion dollar oil conglomerate or some other global warming outfit and then suppressed. Just think if this could cure global warming, you think the folks cashing in on 'carbon offsets' want to hear about this technology? They'd lose their 'carbon offset' cash cow and that would piss off a lot of folks that want to shove this 'carbon dioxide is bad for the earth' agenda down our throats.

mad.gif
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post #9 of 15
5/21/12 at 4:36pm
Interesting.

Skeptical about the energy inputs to making the co-reactants. Lithium is abundant, but energy-expensive to extract and convert to a form suitable for chemical reactions.

The fact that it sequesters carbon is interesting. But even though carbon nitride might be a semiconductor, is it a semiconductor that can actually be used in practical applications? Something doesn't immediately become useful just by virtue of being a semiconductor.
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post #10 of 15
5/21/12 at 4:50pm
Quote:
Originally Posted by chevy106 View Post

Like all great ideas of this type, like the HHO Gas engine that was made in the 70's "Brown's Gas", I'm sure this will tech will be bought by some multibillion dollar oil conglomerate or some other global warming outfit and then suppressed. Just think if this could cure global warming, you think the folks cashing in on 'carbon offsets' want to hear about this technology? They'd lose their 'carbon offset' cash cow and that would piss off a lot of folks that want to shove this 'carbon dioxide is bad for the earth' agenda down our throats.
mad.gif

^ This
Every solar panel, dam builder, windmill producing company would never get this kind of technology out there.
And people say oil and coal companies do all the lobbying... pfff... i bet "eco-friendly" company do just the same. Like for the national endorsement of CFL lightbulbs, even though LEDs are much more effective and safer. GE probably got a ton of money off of that.





Li3N would probably run out before enough CO2 gets converted and I can start using coal power without people screaming global warming at me.
I thought Lithium was a rare-earth metal? Using that to convert CO2 would be cost-ineffective, even though it would release energy.
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