Researchers discover a better way to make ammonia
Rather than brute force the gas’ ionic bonds apart to reform ammonia (NH3), the Utah method breaks them apart with nitrogen-fixing enzymes called nitrogenases. These are the only known enzymes that naturally convert nitrogen to ammonia and are used by a number of anaerobic bacterial species. These enzymes not only create ammonia at room temperature, they also generate a small amount of electricity.The team hopes to use these enzymes, as well as another hydrogen-fixing variety known as hydrogenase, to create fuel cells. These devices would strip electrons from hydrogen gas and feed them into a the nitrogen-reducing reaction to create ammonia and power. However, before the team can scale up the technology to a viable level, they’ve first got to figure out how to deal with nitrogenases’ sensitivity to oxygen and how to keep the process going without relying on ATP to drive the enzymic action. Those are both daunting challenges. Still, at least we now have an easier means of making ammonia.
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