Ammonia has been proposed as a clean fuel for ships, airliners, trucks and trains, but China’s GAC believes it could also have a future in passenger cars. It’s built a combustion engine to test the theory, capable of reducing emissions by around 90%.
Ammonia (NH3) carries hydrogen better than hydrogen carries hydrogen, in some regards. It’s easier to handle, since it’s liquid at ambient temperatures, and it thus doesn’t require energy-hungry compression or cryogenic liquefaction gear.
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You can make it cleanly – although that’s not how the overwhelming majority of it is made today. It’s also highly caustic, and an “extremely hazardous substance” to humans and many animals alike. So it’s got plenty of cons along with its pros – not that gasoline or diesel don’t have their own issues.
Read more: New Atlas