Question

How are the encrypted gases separated out in the Bosch process in the manufacture of hydrogen

Answer 1

(i) Steam is passed over a hot coke (at 1000oC) in a special type of a furnaces called converters.

In this step carbon reacts with water to form carbon monoxide and hydrogen gas. This mixture is called water gas.

In this step excess of steam is mixed with water gas and entire mixture is passed over heated ferric oxide and chromic oxide. Ferric oxide acts as catalyst and chromic oxide as promoter.

(ii) The reaction of superheated steam with coke/charcoal is endothermic in nature. Therefore, the temperature of coke falls down.

Answer 2

The Haber Process combines nitrogen from the air withhydrogen derived mainly from natural gas (methane) into ammonia. The reaction is reversible and the production of ammonia is exothermic. The catalyst is actually slightly more complicated than pure iron