or Haber ammonia process or synthetic ammonia process
First economically feasible method of directly synthesizing ammonia from hydrogen gas and atmospheric nitrogen .
It was developed с 1909 by catalyst (usually iron ) lets it take place at a moderate temperature (750–1,200 kF [400–650 kC]), and immediate removal of ammonia as it is formed favours formation of more of it. Still the cheapest means of industrial nitrogen fixation , it is a basic process of the chemical industry.