Give four examples of heterogeneous catalysis.
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(i) Oxidation of sulphur dioxide to form sulphur trioxide. In this reaction, Pt acts as a catalyst.
(ii) Formation of ammonia by the combination of dinitrogen and dihydrogen in the presence of finely divided iron.
This process is called the Haber's process.
(iii) Oswald's process: Oxidation of ammonia to nitric oxide in the presence of platinum.
(iv) Hydrogenation of vegetable oils in the presence of Ni.
(i) Oxidation of sulphur dioxide to form sulphur trioxide. In this reaction, Pt acts as a catalyst.
(ii) Formation of ammonia by the combination of dinitrogen and dihydrogen in the presence of finely divided iron.
This process is called the Haber's process.
(iii) Oswald's process: Oxidation of ammonia to nitric oxide in the presence of platinum.
(iv) Hydrogenation of vegetable oils in the presence of Ni.
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