1083427-54-6Relevant articles and documents
Study of electronic effect in bifunctional catalysts for the copolymerization of CO2 and PO/CHO
Hu, Yang,Du, Longchao,Li, Cun,Shen, Jiale,Zhu, Weiju,Shao, Chenxi
, p. 1818 - 1826 (2020/05/25)
Carbon dioxide (CO2) is an easily available renewable carbon source that can be used as a comonomer in the catalytic ring-opening polymerization of epoxides to form aliphatic polycarbonates. Herein, a series of new Salen-Co(III) bifunctional catalysts were synthesized for the first time, and they were studied to catalyze the copolymerization of CO2 and propylene oxide (PO)/cyclohexene oxide (CHO). At the same time, the effects of reaction conditions (electronic effect, temperature, time) on catalytic activity and selectivity were investigated. The results show that the Salen-Co(III) complexes with electron-withdrawing groups have higher selectivity and activity for propylene carbonate (PPC)/cyclohexylene carbonate (PCHC). At the same time, the Salen-Co(III) complexes can better catalyze the copolymerization of CHO and CO2 than that of PO and CO2. The catalytic efficiency of the four complexes increased with increasing temperature, and the best reaction condition is 80°C, 30 min and 2 MPa of CO2.
A highly active and recyclable catalytic system for CO2/propylene oxide copolymerization
S, Sujith,Min, Jae Ki,Seong, Jong Eon,Na, Sung Jea,Lee, Bun Yeoul
supporting information; experimental part, p. 7306 - 7309 (2009/04/10)
(Figure Presented) Converting CO2 into polymer: A catalytic system that produces a high molecular weight CO2/propylene oxide copolymer with high activity and selectivity is disclosed. After filtration through silica gel, elution of the catalyst leaves a solid phase with a negligible metal residue (see picture). The catalyst can be reused without significant loss of performance.