A halogen-containing compound represented by a formula I and a use thereof as a ligand of an ethylene oligomerization catalyst composition, an ethylene oligomerization catalyst composition comprising the halogen-containing compound, and an ethylene oligomerization method, ethylene trimerization method and ethylene tetramerization method using the catalyst composition. Serving as the ligand of the ethylene oligomerization catalyst, the halogen-containing polymer may effectively improve the catalytic performance of a catalyst system, especially by displaying a significantly improved catalytic performance in an ethylene oligomerization reaction. The maximum catalyst activity may exceed 4 × 108 g•mol(Cr)-1•h-1, and the total selectivity of 1-hexene and 1-octene exceeds 92 wt%. In a C6 product, the content of 1-hexene may reach about 97%, and in a C8 product, the content of 1-octene may reach more than 98%. The present catalyst composition has good industrial application prospects and economic value.
一种由式 I 表示的含卤素化合物及其作为
乙烯低聚催化剂组合物
配体的用途,一种包含该含卤素化合物的
乙烯低聚催化剂组合物,以及一种使用该催化剂组合物的
乙烯低聚方法、
乙烯三聚方法和
乙烯四聚方法。作为
乙烯低聚催化剂的配位体,含卤聚合物可有效提高催化剂体系的催化性能,尤其是在
乙烯低聚反应中的催化性能显著提高。最大催化剂活性可超过 4 × 108 g-mol(Cr)-1-h-1,
1-己烯和 1-
辛烯的总选择性超过 92 wt%。在 C6 产物中,
1-己烯的含量可达到约 97%,而在 C8 产物中,1-
辛烯的含量可达到 98% 以上。本催化剂组合物具有良好的工业应用前景和经济价值。