Chemicals capture of porous polymer materials and catalytic carbon dioxide conversion

CO2 is the main greenhouse gas, and it is also a cheap and abundant C1 resource. CO2 capture and chemical conversion are of great significance. Porous polymer materials have broad application prospects in gas adsorption and separation, chemical catalysis and other fields because of their design and function of design, providing opportunities for CO2 capture and catalytic conversion.

Under the strong support of the National Natural Science Foundation of China and the Chinese Academy of Sciences, Liu Zhimin, a key laboratory of the Colloid, Interface and Chemical Thermodynamics Laboratory of the Institute of Chemistry, Chinese Academy of Sciences, carried out research on the design and synthesis of porous polymer materials and their capture and catalytic CO2 conversion. Systematic research, made new progress. Researchers have developed various types of nitrogen by introducing pro-CO2 groups into the polymer structure (Chem. Commun. 2015, 51, 1271; Chem. Commun. 2015, 51, 11576.) and fluorine (Green Chem. 2014). , 16, 3724; Chem. Commun. 2014, 50, 13910.), Functionalized Porous Polymeric Catalytic Materials with Phosphorus (ACS Catal. 2016, 6, 1268.) for efficient CO2 capture and efficient conversion.

Recently, the researchers synthesized poly(nitrophenol) mesoporous materials (see Figure 1) for the first time in a water-phase system under the condition of no template and mild conditions by poly-substituted aromatic amine and polyphenol coupling reactions. The specific surface area of ​​the obtained material is as high as 593 m2 g-1, of which ~80% comes from the mesoporous contribution; the presence of azo bonds and phenolic hydroxyl groups in the material structure gives the material a good hydrogen bond forming ability and chelating metal ability. This material can efficiently adsorb CO2 and show good separation selectivity for CO2 and N2 adsorption separation. The chelated Zn2+ polymer material and tetrabutylammonium bromide act together to efficiently catalyze the cycloaddition of CO2 with propylene oxide at room temperature and pressure (Angew. Chem. Int. Ed. 2016, 55, 9685). ; highlighted in back cover).

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