Zeolites are crystalline aluminosilicates with a framework structure based on the three-dimensional arrangement of TO4 (T = Al
Si
P
B
Ga
Be
etc) . Molecular sieves play both the role of supports of catalysts and nanoreactor for the olefin polymerization to proceed. The olefin polymerization process is more controllable due to the immobilization and the resulting polyolefin exhibits adjustable molecular weights
polydispersity index
rheology
stereoregularity
comonomer content
and improved morphology. A review focused on the research and development of olefin polymerization with catalysts immobilized onto molecular sieves is presented herein.