Studies on Alternating Copolymerization of Ethylene and Carbon Monoxide Using Nickel‐Based Catalyst: Cocatalyst and the Polarity of Solvent

• DOI: 10.1002/mren.202100047
• Publication Date: 2021-12-14T16:20:12Z
• Authors: Zhengwei Bie; Bo‐Geng Li; Jijiang Hu; Zhen Yao
• Keywords: 02 engineering and technology; 0210 nano-technology

Abstract Polyketone (PK) has attracted wide attention owing to its direct utilization of carbon monoxide, excellent properties, and photodegradation performance. However, the commercialized PK is produced using Pd‐based catalysts, which accounts for largest part production cost. Herein, [Ni(2‐tol)(PPh 3 )(N,O)] used as main catalyst high productivity good tolerance CO. Effects cocatalyst (Ni(COD) 2 ), aging method in CO atmosphere, polarity solvent are investigated. When Ni(COD) employed cocatalyst, catalytic activity molecular weight increased by 29% 42.6%, respectively. Aging system with atmosphere leads significant decrease weight, while almost no effect on copolymerization without . Different mechanisms proposed cocatalyst. Furthermore, it found that polar (CH Cl ) significantly increases 119.2% compared nonpolar (toluene). thermal stability much better toluene. The study understanding mechanism improvement will promote practical application nonprecious metal catalysts preparation PK.