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Comment Cheap catalysts (Score 1) 227

The price of a catalyst is irrelevant since catalysts by definition remain unchanged by the chemical reaction. The price of the electricity to convert the CO2 into ethanol, however... Catalysts do not violate the laws of thermodynamics. If you do the math you'll find that the energy you put it will be significantly greater than what you'd get from burning all that ethanol back into CO2.

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