Imidazolium- and triazine-based porous organic polymers for heterogeneous catalytic conversion of CO2 into cyclic carbonates
Imidazolium- and triazine-based porous organic polymers for heterogeneous catalytic conversion of CO2 into cyclic carbonates
复制标题
用于将二氧化碳非均相催化转化为环状碳酸酯的咪唑鎓基和三嗪基多孔有机聚合物
DOI：
10.1002/cssc.201701821
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发表时间：
2017
期刊：
影响因子：
8.4
通讯作者：
Wang Ruihu
中科院分区：
文献类型：
--
作者：
Zhong Hong;Su Yanqing;Chen Xingwei;Li Xiaoju;Wang Ruihu
CO2吸附和催化转化是缓解能源危机和全球变暖的有效途径。这对于开发含有CO2亲合基团和用于CO2化学转化的催化活性位点的新型多相催化材料是非常期望的。在这里，我们提出了一种咪唑和三嗪基多孔有机聚合物与抗衡氯阴离子（IT-POP-1）。可以通过简单的阴离子交换策略在分子水平上调节IT-POP-1的孔隙率和CO2亲和力。与含碘离子和六氟磷酸根阴离子的后改性聚合物相比，IT-POP-1具有最高的表面积和最佳的CO2吸收能力，对N2具有优异的吸附选择性。阐述了三嗪、咪唑、羟基和抗衡阴离子等任务特定组分在CO2吸收和催化性能中的作用。IT‐POP‐1在CO2与环氧化物的无溶剂和无添加剂环加成反应中表现出最高的催化活性和优异的可回收性。
CO2adsorption and concomitant catalytic conversion into useful chemicals are promising approaches to alleviate the energy crisis and effects of global warming. This is highly desirable for developing new types of heterogeneous catalytic materials containing CO2‐philic groups and catalytic active sites for CO2chemical transformation. Here, we present an imidazolium‐ and triazine‐based porous organic polymer with counter chloride anion (IT‐POP‐1). The porosity and CO2affinity of IT‐POP‐1 may be modulated at the molecular level through a facile anion‐exchange strategy. Compared with the post‐modified polymers with iodide and hexafluorophosphate anions, IT‐POP‐1 possesses the highest surface area and the best CO2uptake capacity with excellent adsorption selectivity over N2. The roles of the task‐specific components such as triazine, imidazolium, hydroxyl, and counter anions in CO2absorption and catalytic performance were illustrated. IT‐POP‐1 exhibits the highest catalytic activity and excellent recyclability in solvent‐ and additive‐free cycloaddition reaction of CO2with epoxides.