Nickel Catalysts for Non‐Alternating CO‐Ethylene Copolymerization
Nickel Catalysts for Non‐Alternating CO‐Ethylene Copolymerization
复制标题
非交替CO-乙烯共聚镍催化剂
DOI：
10.1002/cctc.202200974
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发表时间：
2022
期刊：
影响因子：
4.5
通讯作者：
Jia, Li
中科院分区：
文献类型：
--
作者：
Zhu, Linhui;Gaire, Sanjay;Ziegler, Christopher J.;Jia, Li
过渡金属催化的CO和乙烯的共聚具有产生严格交替共聚物的强烈固有倾向。在这项工作中，开发了能够进行乙烯均聚和CO和乙烯交替共聚的镍催化剂，以探索CO和乙烯的非交替共聚的可能性，假设聚合物链中的共聚单体掺入可以通过共聚单体的浓度来调节。获得了具有略高于50%乙烯的聚酮和具有少量CO掺入的“聚乙烯”，但仅在仔细控制的条件下并且产率低。
Transition metal‐catalyzed copolymerization of CO and ethylene has a strong inherent propensity to produce the strictly alternating copolymer. In this work, nickel catalysts capable of both homopolymerization of ethylene and alternating copolymerization of CO and ethylene are developed to explore the possibility of non‐alternating copolymerization of CO and ethylene under the assumption that comonomer incorporation in the polymer chain can be adjusted by the concentrations of the comonomers. Both polyketones with slightly more than 50 % ethylene and “polyethylenes” with a small amount of CO incorporation are obtained but only under carefully controlled conditions and in low yields.