Homogeneous catalysts are in the same state as the reactants
Example
Enzymes catalyse the chemical reactions which take place in the
living cells of plants and animals. Both enzyme and reactants are in
solution. They find uses in the home and in industry:
● Biological washing powders contain enzymes which speed up the
reaction of protein stains (blood, egg etc) with Water.
● In the brewing industry, plant enzymes are used to convert
Starch into alcohol.