Technical production of nitric acid by Ostwald method

Nitric acid is prepared in large scale from ammonia and air (Fig.6.14).


Pure dry ammonia (1 volume) and air (10 volumes)


1) 1st step - Catalytic oxidation of ammonia to form nitric oxide

2) 2nd step - Oxidation of nitric oxide to nitrogen dioxide.

3) 3rd step - Absorption of nitrogen dioxide in water to give nitric acid.

nitric acid manufacture by ostwald s process


Platinum (for oxidation of )


700o - 800oC

ostwald s process

1 comment:

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Nitric Acid