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Carbon Monoxide Silicate Reduction System, Phase II
Completed
Description
The Carbon Monoxide Silicate Reduction System (COSRS) is a novel technology for producing large quantities of oxygen on the Moon. Oxygen yields of 15 kilograms per 100 kilograms of feed soil were demonstrated during Phase I using both lunar and Mars soil simulants. This is about five times the oxygen yield achievable by hydrogen reduction. Up to 30 kilograms of oxygen per 100 kilograms of feed soil are recoverable by adjustment of the carbon-silicon ratio. Soils are sequentially subjected to iron oxide reduction by carbon monoxide, in-situ deposition of carbon throughout the soil by carbon monoxide disproportionation, and finally high-temperature carbothermal reduction of silicates by the deposited carbon. COSRS operates in a closed system. An inventory of carbon is maintained in the form of carbon monoxide, carbon dioxide, and solid carbon. Most of the oxygen recovered from soil is in the form of carbon monoxide, which is converted to carbon dioxide. Carbon dioxide is then reacted with hydrogen in a reverse water gas shift reactor. The RWGS system regenerates carbon monoxide for use in the COSRS process and produces water, which is electrolyzed. Hydrogen from electrolysis is recycled within the RWGS system. Oxygen from electrolysis is the COSRS product.
Details
| Technology area | Human Health, Life Support, and Habitation Systems > Environmental Control and Life Support Systems and Habitation Systems > Atmosphere Revitalization |
| Program | Small Business Innovation Research/Small Business Tech Transfer (SBIR/STTR) |
| Lead organization | Johnson Space Center, Houston, TX |
| Start date | 2006-04-14 |
| End date | 2007-04-13 |
How to get involved
This is a mature technology (TRL 7+) — the realistic path in is usually NASA's Technology Transfer Program: licensing an existing NASA patent, or a Space Act Agreement to use NASA facilities/expertise directly. NASA also runs a startup licensing program with no upfront fee for companies formed to commercialize a specific NASA technology.
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