The main "why" is a carbon-free fuel (when produced by solar) in a relatively dense form. Liquid ammonia has higher energy density than liquid hydrogen, is easier to store, and is already used a bulk chemical around the world. It also is more energy efficient than liquifying hydrogen.
If you imagined what oil would look like without carbon, ammonia is pretty close. The toxicity probably prevents cars and trucks from using ammonia, but for marine power or grid energy, it seems feasible.
Also, the co-combustion fuel can be supplied on-site by cracking the ammonia to hydrogen.
If you imagined what oil would look like without carbon, ammonia is pretty close. The toxicity probably prevents cars and trucks from using ammonia, but for marine power or grid energy, it seems feasible.
Also, the co-combustion fuel can be supplied on-site by cracking the ammonia to hydrogen.
https://www.kallanishenergy.com/2020/07/08/air-products-to-b...