Alkenes are readily hydrogenated under pressure in the presence of a catalyst. Which of the following catalysts is effective at room temperature ?

Options

A. Platinum black
B. Palladium black
C. Raney nickel
D. Alll of these

Answer

D

Explanation

All are effective at room temperature. Platinum and palladium black are the respective metals in a very finely divided state. They are usually prepared by reducing their soluble salts with formaldehyde.