Using concentrated solar energy to reverse combustion, a research team from Sandia National Laboratories is building a prototype device intended to chemically “reenergize” carbon dioxide into carbon monoxide using concentrated solar power. The carbon monoxide could then be used to make hydrogen or serve as a building block to synthesize a liquid combustible fuel, such as methanol or even gasoline, diesel and jet fuel.
The prototype device, called the Counter Rotating Ring Receiver Reactor Recuperator (CR5, for short), will break a carbon-oxygen bond in the carbon dioxide to form carbon monoxide and oxygen in two distinct steps. It is a major piece of an approach to converting carbon dioxide into fuel from sunlight.
The Sandia research team calls this approach ‘Sunshine to Petrol’ (S2P). ‘Liquid Solar Fuel’ is the end product — the methanol, gasoline, or other liquid fuel made from water and the carbon monoxide produced using solar energy.
This invention, though probably a good 15 to 20 years away from being on the market, holds a real promise of being able to reduce carbon dioxide emissions while preserving options to keep using fuels. Recycling carbon dioxide into fuel provides an attractive alternative to burying it.
Via: ScienceDaily
