Question

Which of the following is used as catalytic promoter?
1. Chlorine
2. Helium
3. Nitrogen
4. Sulphur

Answer 1

Correct Answer - Option 3 : Nitrogen

• Promoters are the substances which when mixed with catalysts speed up the reaction.
• Promoters are not capable of catalyzing a reaction alone but when mixed with catalysts, increases the efficiency of the catalysts.
• Promoters increase the catalytic surface area and thus increases the efficiency of the catalysts.
• For example, Molybdenum used in small amounts with Iron in Haber's Process increases the efficiency of finely divided iron.
• Chromic oxide Cr₂O₃ is used as a promoter in water gas shift reaction with the catalyst Zinc Oxide.
• Promoters are also known as Activators.
• Nitrogen gas is extremely inert in nature and is used as a protective gas in many reactions to offer an inert environment for the reaction to occur.
• Nitrogen is seen to act as a promoter in many reactions and promote the activity of Ru clusters.
•  It is now seen that Nitrogen can be activated in much less severe conditions.
• Helium, Chlorine, and Sulphur are not used as promoters.

Hence, Nitrogen is used as a catalytic promoter.

Uses of Chlorine:

• Chlorine has antibacterial properties and is used to kill bacteria.
• It is used to disinfect water.
• It is used to make paper, paints, insecticides, etc.

Uses of Helium:

• It is inert in nature and used to provide an inert atmosphere in many reactions.
• It is used to detect car leaks.

Uses of Sulphur:

• It is used in the manufacture of many compounds and phosphate fertilizers.
• It is used to make ointments for various skin diseases.
• It is used in the process of vulcanization of rubber.