Hydrogenation of alkenes
The reaction, where two atoms of hydrogen are added across a double bond is known as hydrogenation. The hydrogenation of the double bond in an alkene converts it to a saturated bond of an alkane.
A catalyst such as platinium (Pt) or nickel (Ni) is usually added to speed up the reaction but doe not appear in the products. Hydrogenation has an important application in our daily life. It is used to prepare ghee (vanspathi) from vegetable oils.