The present invention relates to a novel linear α-olefin catalyst composition, and preparation and use thereof. The catalyst composition includes a main catalyst and a co-catalyst, wherein the main catalyst is an imino-based iron coordination compound, and the co-catalyst is a mixture of methylaluminoxane, triisobutylaluminum, and borane or GaCl3. The catalyst composition can be used to catalyze ethylene oligomerization to produce linear α-olefins having a selectivity of greater than 96%, carbon distribution between C4-C28 with the component of C6-C20 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 relatively convenient in operation, readily available of raw materials, high yield, low costs, less pollution and easy for industrial production.
本发明涉及一种新型线性α-烯烃催化剂组合物及其制备和使用。该催化剂组合物包括主催化剂和助催化剂,其中主催化剂为亚
氨基
铁配位化合物,助催化剂为甲基铝氧烷、
三异丁基铝和
硼烷或 GaCl3 的混合物。该催化剂组合物可用于催化
乙烯低聚生成线性α-烯烃,其选择性大于 96%,碳分布在 C4-C28 之间,C6-C20 的组分大于 75%。本发明催化剂结构稳定,可用于
乙烯低聚,催化效率高。本发明的方法具有操作相对方便、原料易得、收率高、成本低、污染少、易于工业化生产等优点。