How can the production of dihydrogen , obtained from coal gasification

1.	How can the production of dihydrogen , obtained from coal gasification, be increased?
Answer» Solution :The process of producting syngas or synthesis gas from coal is called 'coal gasification'. ` underset("Coal")(C(s))+ underset("Steam")(H_(2)O(g)) underset(Ni)overset(1270K)to underset("Syngas")ubrace(Co(g)+H_(2)(g))` The production of hydrogen can be increased by reacting carbon monoxide of syngas with steam in presence of iron chromate as catalyst at 673 K . This is called water gas shift REACTION. `CO(g) + H_(2)O(g) overset(FeCrO_(4),673K)to Co_(2)(g) + H_(2)(g)` The `CO_(2)` thus produced is removed EITHER by scrubbing with a solution of sodium aresente or by passing the mixture through water under 30 ATM . Pressure when `CO_(2)` dissolves leaving BEHIND `H_(2)` which is collected.

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