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Many industrial processes use catalysts.

1. What are catalysts?

2. What do you mean by the terms ‘promoters’ and, ‘poisons’ in catalysis?

3. Suggest an example for a catalytic promoter.

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1. Catalysts are substances, which alter the rate of a chemical reaction and themselves remain unchanged.

2. Promoters are substances that enhance the activity of a catalyst. Catalytic poisons are substances which decrease the activity of a catalyst.

3. In Haber’s process for manufacture of ammonia, molybdenum (Mo) acts as a promoter for iron catalyst.

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