Imine-linked covalent organic frameworks coordinated with nickel for ethylene oligomerization,Journal of Applied Polymer Science

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Imine-linked covalent organic frameworks coordinated with nickel for ethylene oligomerization
Journal of Applied Polymer Science ( IF 2.7 ) Pub Date : 2022-11-08 , DOI: 10.1002/app.53320
Lijun Guo ₁ , Yuxin Gao ₂ , Jin Huang ₁ , Jingqi Xue ₁ , Feng Li ₁ , Cuiqin Li ₁

Affiliation

The functionalized covalent organic framework materials play an important role in catalytic application. A convenient tactic is developed to design and synthesize an imine-linked covalent organic frameworks (COFs) material (COF-PD) with abundant nitrogen atoms, which can provide coordination active site and facilitate the incorporation of COFs with nickel ions. Nickel-coordinated COF-PD complex (COF-PD-Ni) is prepared and used in ethylene oligomerization. COF-PD-Ni displays the highest catalytic activity of 1.98 × 10⁵ g/(mol·Ni·h) in ethylene oligomerization with MAO as co-catalyst and cyclohexane as solvent. Various reaction parameters including reaction temperature, time, solvent, and the amount of cocatalyst are evaluated in detail, dramatically impacting the catalytic activities as well as the distribution of the products. What is more, the effect of COFs structure on the catalytic performance is also studied, suggesting more coordination sites were more important for high activity.

中文翻译：

亚胺连接的共价有机框架与镍配位用于乙烯齐聚

功能化的共价有机骨架材料在催化应用中发挥着重要作用。开发了一种方便的策略来设计和合成具有丰富氮原子的亚胺连接的共价有机骨架（COF）材料（COF-PD），它可以提供配位活性位点并促进COF与镍离子的结合。制备了镍配位的 COF-PD 络合物 (COF-PD-Ni) 并将其用于乙烯齐聚反应。COF-PD-Ni 显示出最高的催化活性 1.98 × 10 ⁵ g/(mol·Ni·h)在以MAO为助催化剂和环己烷为溶剂的乙烯齐聚中的应用。详细评估了各种反应参数，包括反应温度、时间、溶剂和助催化剂的量，这些参数显着影响催化活性以及产物的分布。此外，还研究了 COF 结构对催化性能的影响，表明更多的配位点对于高活性更为重要。

更新日期：2022-11-08

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