Way to Turn Car Emissions Into Alcohol https://www.ornl.gov/news/nano-spike-catalysts-convert-carbon-dioxide-directly-ethanol Interesting, I have not noticed were they get the hydrogen for the conversion
expensive way to make hooch. easier to take grain-mash or grape-juice and let it sit around. the ORNL process described above requires an energy input.
Agree , rather annoying they don't mention the water that must be required. However they do say they use CO2 dissolved in water so by implication that is the source of hydrogen. Presumably also, they generate free oxygen, but this is not mentioned either!
2CO2 + 3 H2O + Energy ------- HH3-CH2-OH + 3O2 that is what you are saying I wonder if they used carbonic acid on some Copper catalyst
They mention possible use as energy storage for when there's excess electricity supply, but I'm guessing the efficiency of the conversion process to ethanol and back would be pretty low indeed.