Common Catalysts used for the industrial prcoess are:

a) Manufacture of sulphuric acid –> Vanadium(V) oxide, V2O5 (Contact Process)
b) Manufacture of ammonia –> Iron (Chapter on Haber Process)
c) Manufacture of margarine –> Nickel (Chapter on Organic Chemistry-Alkenes)

The catalysts mentioned above are those that introduced in most textbooks for
GCE O Level or GCSE examinations.

Hope this helps.

To your Academic Success in Chemistry,
Sean
Founder & Master Trainer
http://www.SimpleChemConcepts.com