![]() Īqua- regia dissolves such metals due to formation of highly reactive nascent chlorine. Absorption tower : In absorption tower water is sprayed from its roof and tower is packed with acid proof(resistant) flint (stone). Oxidation chamber : In this chamber, nitric oxide combines with oxygen to form nitrogen dioxide.Ĥ. The cooled nitric oxide is passed in oxidation chamber.ģ. Cooler : The nitric oxide formed is cooled using refrigerator. Catalyst converter : Ammonia gas and air in the ratio of 1:8 by volume is first compressed and passed through converter where ammonia is oxidized into nitric oxide in the presence of platinum as catalyst at temperature 800 0C.Ģ. The working of the plant involves following steps :ġ. Oxidation of nitrogen dioxide(NO 2) to nitric acid in presence of air and water. Oxidation of NO to NO 2 : Nitric oxide is cooled to about 50 0C to 100 0C and air oxidized to nitrogen dioxide.ģ. Catalytic oxidation of NH 3 to NO : When ammonia is oxidized with oxygen in presence of catalyst platinum and rhodium in 9 : 1 ratio at about 800 0C and 5 atmospheric pressure, nitric oxide is formed.Ģ. Manufacture of nitric acid by Ostwald’s processġ. Chemical reaction of nitric acid with noble metals in presence of conc.Action with FeSO4 : ( Test for nitric acid or nitrate ion (NO3– ) :.Chemical Properties of nitric acid (HNO3).Manufacture of nitric acid by Ostwald’s process.
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |