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查阅了自首次报道羧酸钕用于共轭二烯烃定向聚合至今近40年以来,关于不同羧酸钕配合物对1,3-丁二烯(BD)定向聚合催化活性影响的研究文献。通过对文献中催化活性数据的加工整理与统计分析,获得了17个羧酸钕配合物对BD定向聚合催化活性的相对大小与变化规律。其中,新癸酸钕分子增加一个新癸酸配体后形成的单分子配合物的催化活性增加为新癸酸钕齐聚物的5.8倍,相当于钕的利用率增加为35%左右,是截至目前报道的活性最高的羧酸钕配合物。但要将钕的利用率提高到100%,仍有较大的潜力。这些定量规律,对于研究金属钕配合物的结构与催化活性之间的定量构效关系、进一步提高催化剂活性,具有指导意义。同时也可为系统地研究异戊二烯的聚合催化活性规律提供借鉴。
A review of the literature on the effect of different neodymium carboxylate ligands on the catalytic activity of 1,3-butadiene (BD) directional polymerization has been reviewed since it was first reported that neodymium carboxylate has been used in the directional polymerization of conjugated dienes for nearly 40 years. Through the processing and statistical analysis of the catalytic activity data in the literature, the relative size and variation of the catalytic activity of 17 polycarboxylic acid neodymium complexes for BD directional polymerization were obtained. Among them, neodecanoic neodecanoate increased a neodecanoic acid ligand after the formation of a single-molecule complex catalytic activity increased Neodecanoate neodecanoate 5.8 times the equivalent of neodymium utilization increased by about 35%, is Up to now reported the highest activity of the carboxylic acid neodymium complex. However, neodymium utilization to improve to 100%, there is still great potential. These quantitative rules are of guiding significance for studying the quantitative structure-activity relationship between the structure and the catalytic activity of the metal neodymium complex and further improving the catalyst activity. At the same time, it can also provide a reference for systematically studying the polymerization catalytic activity of isoprene.