Give four examples of heterogeneous catalytic reactions.

Explanation

a. Contact process reaction
b. Haber's process reactions
c. Hydrogenation of vegetable oils
Vegetable oil `+H_(2)overset(Ni)(rarr)` Vegetable ghee
`CH_(2)=CH_(2)+H_(2)overset(Ni)(rarr)CH_(3)-CH_(3)`
d . Synthesis of methanol
`CO(g)+2H_(2)(g)overset(Cu,ZnO-Cr_(2)O_(3))(rarr)CH_(3)OH(l)`