The Haber process (a) is used to manufacture ammonia.
The Haber process, which artificially fixes nitrogen, is currently the primary industrial method for producing ammonia.
Using a metal catalyst and high temperatures and pressures, the process turns atmospheric nitrogen (N2) into ammonia (NH3) by reacting with hydrogen (H2).
Haber's reaction is - N2 + H2 ------> NH3
The gases (nitrogen and hydrogen) are passed through four beds of catalyst in this conversion, which is normally carried out at pressures above 10 MPa (100 bar; 1,450 psi) and between 400 and 500 °C (752 and 932 °F). Cooling is applied between each pass to maintain a reasonable equilibrium constant.
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