The activity of the catalyst increased by the addition of small quantity of a second material. That substance not act as a catalyst, promotes (increase) the activity of a catalyst so that it is called Promoter.
( i ) Synthesis of ammonia in Haber's process, small amount of molybdenum increase the activity of finely divides iron. ( catalyst ).
( i ) Synthesis of ammonia in Haber's process, small amount of molybdenum increase the activity of finely divides iron. ( catalyst ).
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