Technical production of nitric acid by Ostwald method

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

Reactants

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

Reactions

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

Catalyst

Platinum (for oxidation of )

Temperature

700o - 800oC

ostwald s process

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