[Terminology] Micellar catalysis
The surfactant forms micelle in water, which greatly changes the microenvironment of the reaction, and then affects the rate of reaction.
Micellar catalysis can not only increase the reaction rate, but also reduce the reaction rate.
A typical micellar catalytic reaction is the hydrolysis of ester.
Micellar catalysis can make the reactions which originally depend on organic solvents can be carried out in water.