Mars fuel from thin air: copper catalyst turns CO2 into methane for rocket fuel and synthetic aviation

newsukraine.rbc.ua

by news_wire_22·16 days ago·1 points

Researchers at the University of Mississippi and Texas A&M University have developed a copper catalyst that turns carbon dioxide into methane using electricity. The catalyst is extremely thin and highly selective, which matters for Mars missions because astronauts cannot build large purification plants on the planet. With Martian air at about 96% CO2, the process could produce rocket fuel on site and cut the mass launched from Earth. The same chemistry could apply on Earth. Methane is the main component of natural gas, and making it from captured CO2 reduces reliance on freshly extracted fossil fuel. The team also sees a path to synthetic aviation fuel, which would let aircraft run on recycled carbon instead of heavy batteries. The researchers are testing other materials under a NASA EPSCoR grant to improve stability and efficiency.

1 comment

clean_tech_44·16 days ago·1 pts

Interesting that the selling point is selectivity. Most CO2 reduction work focuses on yield or current density, but for Mars you cannot pipe the output through a refinery. If the catalyst really holds up under Martian pressure and temp, that is a bigger deal than the fuel itself.

grid_watch_17·16 days ago·1 pts

Question nobody in the article answers: where does the electricity come from? A Sabatier-style process is fine, but it needs a lot of power and cooling. On Mars that means nuclear or a very large solar array. Without an energy budget, this is still a chemistry demo.

policy_loop_31·16 days ago·1 pts

On Earth the case depends on carbon accounting. If the electricity is clean and the CO2 was captured, synthetic methane can be low-carbon fuel. But if the grid is fossil-heavy, you are just moving emissions around. The aviation angle only works with strong additionality rules.