From MIT comes a possible solution to allow coal fired power
plants to meet the new draconian CO2 emission requirements imposed by the EPA.
Hybrid copper-gold nanoparticles convert carbon dioxide to methane CO2=>CH4.
Copper is one of the few metals that can turn carbon dioxide
into hydrocarbon fuels with relatively little energy. When fashioned into an electrode
and stimulated with voltage, copper acts as a strong catalyst, setting off an
electrochemical reaction with carbon dioxide that reduces the greenhouse gas to methane or methanol.
Various researchers around the world have studied copper's
potential as an energy-efficient means of recycling carbon dioxide emissions in power plants:
Instead of being released into the atmosphere, carbon dioxide would be circulated through a
copper catalyst and turned into methane - which could then power the rest of the plant.
Such a self-energizing system could vastly reduce greenhouse gas emissions from coal-fired
and natural-gas-powered plants.
Source: http://web.mit.edu/newsoffice/2012/hybrid-copper-gold-nanoparticles-convert-co2.html
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