PEG-supported catalysts to exhibit high catalytic activity have gained significant attention. They can be recovered and reused conveniently. Furthermore, PEG could be used as a mobile phase supporting catalyst movably. The simple separation of homogeneous catalysts could be realized through monophasic catalysis coupled with biphasic separation. This paper reviews the advances in this research field.

Key words: liquid/liquid biphasic catalysis, PEG-supported catalyst, separation and recovery of catalyst