【摘要】 对乙烯选择性三聚反应进行了论述,着重分析了催化剂的组成、活性、成本和1-己烯的总选择性,并展望了烯烃选择性齐聚反应的发展。研究表明,一个具有高选择性的三聚催化剂需要选择具有合适氧化态的前过渡金属,以及具有合适电子结构、空间位阻与介稳定性的配体。此外,可选择的配体越来越多,涵盖了芳香族、杂原子和多齿配体,并且活性中心也不再局限于铬,扩展到钛等其他前过渡金属。更多还原

【Abstract】 Advances in ethylene selective trimerization catalysts,especially composition,activity and cost of trimerization catalysts and their overall selectivity to 1-hexene.Development of high-selectivity trimerization catalysts needs the combination of suitable early transition metal in oxidation state and ligands with appropriate electronic structure,space steric hindrance and metastability.Expanding scope of usable ligands included aromatics,heteroatoms and polydentate ligands.Active centers have also expanded from chromium to titanium or other early transition metals.更多还原