question_answer 27)

Give four examples of heterogeneous catalysis.

Answer:

(i) Iron catalyst is used in the manufacture of ammonia by Haber's process. N2 (g) + 3H2 (g)  2NH3 (g) (ii) V2O5 catalyst is used in the manufacture of H­2SO4 by contact process. 2SO2 (g) + O2 (g)  2SO3 (g) (iii) Nickel catalyst is used in the hydrogenation of oil. Oil + H2 fat (iv) Ziegler Natta catalyst is used in the low temperature and low pressure polymerisation of alkenes. (v) CuO + ZnO catalyst is used in the manufacture of methyl alcohol from water gas.