Difference between Homogeneous and heterogeneous catalysts
Difference between Homogeneous catalysts and heterogeneous catalysts are in tabular form below –
Homogenous catalysts |
Heterogeneous catalysts |
1) In this process, the catalyst and the reactions are in same phase and reacting system is homogenous through the catalyst which is distributed uniformly through the system. | In this system, the catalyst and the reactants are in different phases, while the reactants are in the gaseous or liquid phase.
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2) Homogenous catalysts frequently difficult to separate. | Heterogeneous catalysts frequently readily separated. |
3) They are expensive and difficult to recycle. | They get readily regenerated. |
4) It has often very high rates, base catalysis highly favor kinetics. | Rates not casually fast as homogenous catalysts. |
5) They have short life and requires extensive purification step. | They have long and less purification step. |
6) They have lower temperature (<250), Higher pressure, lower thermal stability. | They have high temperature and pressure, better thermal stability. |
7) They have molecular active sites, very well defined, uniform, tunable and accessible. | They are not well defined, heterogeneous but tunable, limited accessibility. |
8) They are relatively less susceptible and sensitive to water and oxygen. | They are highly susceptible. |