Sphere-like super-macroporous mesoporous material and polyolefin catalyst containing same

Abstract

Disclosed are a sphere-like super-macroporous mesoporous material, a polyolefin catalyst, and a preparation method therefor and an olefin polymerization process. The sphere-like super-macroporous mesoporous material has a two-dimensional hexagonal ordered pore channel structure. The mesoporous material has an average pore size of 10 nm to 15 nm, a specific surface area of 300 m2/g to 400 m2/g, and an average particle size of 1 μm to 3 μm, based on the total mass of the mesoporous material. The mass content of water in the mesoporous material is <1 ppm. The mass content of oxygen in the mesoporous material is <1 ppm. When a polyolefin catalyst prepared with the mesoporous material as a carrier is used for an olefin polymerization reaction, a polyolefin product with a narrow molecular weight distribution and a good melt index can be obtained.

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