【摘要】 综述了Fe(Co)系吡啶二亚胺类催化剂的研究情况,介绍了催化剂的合成及其结构特征、催化乙烯聚合的反应机理、聚合反应特点以及影响因素等,详细列举了各个因素对催化活性和聚合物分子量的影响情况。对该类催化剂的应用进行概括,并展望了其今后的发展方向。更多还原

【Abstract】 This paper reviewed development status of the catalysts based on 2,6-bis (imino) pyridine iron (Ⅱ) (Co) complexes used in ethylene polymerization. The synthesis and structure of the catalysts, the catalytic mechanism in ethylene polymerization, the characteristics and influential factors of the polymerization reaction were introduced. The effect of structure of the catalysts and reaction conditions on the polymerization activity and molecular weight of polyethylene were described in detail. The applications of the catalysts were summarized briefly, and the future development of the catalyst of this kind was envisioned.更多还原