Question

What is the promoter used in the manufacture of ammonia by Haber's process

• A. Iron
• B. Molybdenum
• C. Silica
• D. Aluminium

Answer 1

Answer:

B. Molybdenum

• In the Haber-Bosch process for the industrial synthesis of ammonia Iron ($\text{Fe}$) acts as the catalyst.

• Molybdenum is added as a promoter to increase the efficiency and activity of the iron catalyst.