@ A novel ethylene dimerization catalyst is provided consisting essentially of a nickel compound, a phosphine compound, and an acidic compound. In addition, an improved ethylene dimerization process is provided which comprises contacting ethylene with the novel catalyst composition present, in an effective solvent, at a temperature from about 0°C to about 200°C. As a result of the inventive process, high catalyst productivity and good selectivity to the desired dimerized product, 1-butene, is obtained.
提供了一种新型
乙烯二聚催化剂,主要由
镍化合物、膦化合物和酸性化合物组成。此外,还提供了一种改进的
乙烯二聚工艺,该工艺包括
乙烯与存在于有效溶剂中的新型催化剂组合物在约 0°C 至约 200°C 的温度下接触。由于采用了本发明的工艺,催化剂的生产率高,对所需的二聚产物 1-
丁烯的选择性好。