Question

Why are transition elements good catalysts?

Explain why transition metals are good catalysts.

How would you account for the following:

The transition metals and their compounds are found to be good catalysts in many processes?

Answer 1

Transition elements are good catalysts because they exhibit varied oxidation states, have a large surface area because complex compounds are formed on them, reactant molecules adsorb onto their surface, and intermediates are formed.

Answer 2

Transition metals are good catalysts because:

1. They have vacant d-orbitals allowing them to form intermediates.
2. They show variable oxidation states (variable valencies).
3. They tend to form complexes with reactants, creating unstable intermediates.
4. These intermediates lower the activation energy and increase the reaction rate.
5. Finely divided metals provide a large surface area for reactant adsorption, helping molecules combine more easily.