咔唑基有机微孔聚合物的制备及其二氧化碳吸附性能研究

Preparation and CO_2 capture study of carbazole-based microporous organic polymers

为了提高有机微孔聚合物(MOPs)对二氧化碳气体的吸附量并探讨MOPs的化学组成及多孔性能对其二氧化碳吸附能力的影响,通过在MOPs骨架中引入与二氧化碳分子有亲和力的咔唑基团,制备了一系列咔唑基有机微孔聚合物(CMOPs),并研究其结构与二氧化碳吸附性能之间的关系。咔唑基MOPs展现出优异的二氧化碳吸附性能,随着BET比表面积的升高,其二氧化碳吸附能力也有相应的增强,其中CMOP-2的BET比表面积最高达1 090m^2/g,在273K和113kPa条件下,其二氧化碳吸附量为3.08mmol/g。

In order to improve the CO2 capture capacity of microporous organic polymers （MOPs ） and study the influence of chem-ical composition and porous property, carbazole groups were introduced into the backbone of MOPs and a series of carbazole- based microporous organic polymers （CMOPs） were prepared. The relationship between the structure and CO2 capture capacity was also studied in this paper. It was found that the carbazole-based microporous organic polymers exhibit excellent CO2 capture performances and their CO2 capture capacities were enhanced wi th the increase of BET specific surface area. Among them, CMOP-2 exhibits the highest BET specific surface area of 1 090 m^2/g and it shows the highest CO2 capture capabi lity of 3. 08 mmol/g at 273 K and 113 kPa.