| abstract |
The invention discloses a ligand, a preparation method, a catalyst for ethylene oligomerization and application thereof. The catalyst includes a PNSiNP ligand, a second ligand, a transition metal compound, and an alkyl aluminum cocatalyst. The second ligand is selected from nitrogen, phosphine, and sulfur small-molecule compounds containing a single heteroatom. The catalytic system can catalyze ethylene oligomerization with high activity, and the catalytic activity is as high as 400,000 g/(gCr h), and the overall selectivity of 1-hexene and 1-octene with high added value can reach 85%. |