I worked out such technology of ammonia production which runs under atmospheric pressure, relatively non-high temperature, without catalyst and liquefaction of air, without using of coal nor natural gas and is cheaper than other existing process techologies.
Therefore, it means that the feedstock shall not be purified from catalyst inhibitors. There aren’t the energy consuming liquefaction of air and compression. There isn’t any carbon-dioxide emission. Furthermore, the complete technology is less explosion hazardous.