Ionic Liquid/Zn-PPh3 Integrated Porous Organic Polymers Featuring Multifunctional Sites: Highly Active Heterogeneous Catalyst for Cooperative Conversion of CO2 to Cyclic Carbonates

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• 作者：Wenlong Wang ; Cunyao Li ; Li Yan ; Yuqing Wang ; Miao Jiang ; Yunjie Ding
• 刊名：ACS Catalysis
• 出版年：2016
• 出版时间：September 2, 2016
• 年：2016
• 卷：6
• 期：9
• 页码：6091-6100
• 全文大小：653K
• 年卷期：0
• ISSN：2155-5435

文摘

A series of ionic liquid (IL), zinc halide (ZnX₂), and triphenylphosphine (PPh₃) integrated porous organic polymers (POPs) featuring multifunctional sites were afforded through solvothermal synthesis for cyclic carbonate synthesis which utilizes epoxides and carbon dioxide (CO₂). Owing to the cooperative effect of ionic liquid and homogeneously distributed Zn-PPh₃ specie, which is probably strengthened by the confined microporous structure and flexible frameworks, these POPs catalysts exhibited high CO₂ capture and conversion performance and provided the highest activity (initial turnover frequencies up to 5200 h^–1) of heterogeneous catalysts reported to date within the context of cyclic carbonate formation. Even more surprising, very favorable turnover numbers (TONs) of 2120 and 720 were attained at 40 and 25 °C, respectively. The effect of reaction parameters (reaction time, temperature, CO₂ pressure) on the catalytic performance as well as other epoxide substrates were also investigated in detail. Furthermore, the catalyst can be easily recovered and reused five times without a significant loss of activity. These ionic liquid and Zn-PPh₃ constructed porous polymers may provide an industrial opportunity for cyclic carbonate products.