Birkeland-Eyde process

The Birkeland-Eyde process was developed by the Norwegian industrialist and scientist Kristian Birkeland along with his business partner Sam Eyde. This process was used to fix atmospheric nitrogen which was in turn used to produce Haber process).

The process

This is a tedious process and the heating is carried out in the form of pulses by passing alternating current through an electric arc and suppressing the magnetic field created by it. Birkeland used a nearby hydroelectric power station for the electricity as this process demanded about 15000 KWH/Ton. The same reaction is carried out by lightning causing the temperature to rise to about 3000°C in the atmosphere to produce nitric oxide.

$\rm N_2 \rm + \rm O_2 \rarr 2 \rm NO$

The obtained nitric oxide is then oxidised to produce nitrogen dioxide.

$2\rm NO \rm + \rm O_2 \rarr 2\rm NO_2$

This nitrogen dioxide is then dissolved in water to give rise to nitric acid which is then purified by mixture

$3\rm NO_2 \rm + \rm H_2O \rarr 2\rm HNO_3 \rm + \rm NO$

Chemical reactions

This article is licensed under the GNU Free Documentation License. It uses material from the Wikipedia article "Birkeland-Eyde_process". A list of authors is available in Wikipedia.