| abstract |
The present invention relates to an innovative linear α-olefin catalyst composition, and the preparation and use thereof. The catalyst composition includes a main catalyst and a cocatalyst, wherein the main catalyst is an imino-based iron coordination compound, and the cocatalyst is a mixture of methylaluminoxane, triisobutylaluminum, and borane or GaCl3. The catalyst composition can be used to catalyze oligomerization of ethylene to produce linear aolefins having a selectivity greater than 96%, carbon distribution between C4-C28 with the C6-C20 component being greater than 75%. The catalyst of the invention is stable in structure and can be used for ethylene oligomerization with high catalytic efficiency. The method of the invention has the advantages of being relatively convenient in operation, easy availability of raw materials, high yield, low costs, less pollution and easy industrial production. |