Our official English website, www.x-mol.net, welcomes your
feedback! (Note: you will need to create a separate account there.)
Ionic-Functionalized Polymers of Intrinsic Microporosity for Gas Separation Applications
Langmuir ( IF 3.7 ) Pub Date : 2018-03-19 00:00:00 , DOI: 10.1021/acs.langmuir.7b04320
Shalini J. Rukmani , Thilanga P. Liyana-Arachchi , Kyle E. Hart 1 , Coray M. Colina
Langmuir ( IF 3.7 ) Pub Date : 2018-03-19 00:00:00 , DOI: 10.1021/acs.langmuir.7b04320
Shalini J. Rukmani , Thilanga P. Liyana-Arachchi , Kyle E. Hart 1 , Coray M. Colina
Affiliation
![]() |
Ionic-functionalized microporous materials are attractive for energy-efficient gas adsorption and separation processes and have shown promising results in gas mixtures at pressure ranges and compositions that are relevant for industrial applications. In this work, we studied the influence of different counterions (Li+, Na+, K+, Rb+, and Mg2+) on the porosity, carbon dioxide (CO2) gas adsorption, and selectivity in ionic-functionalized PIM-1 (IonomIMs), a polymer belonging to the class of linear and amorphous microporous polymers known as polymers of intrinsic microporosity (PIMs). It was found that an increase in the concentration of ionic groups led to a decrease in the free volume, resulting in a less porous polymer framework, and Mg2+-functionalized IonomIMs exhibited a relatively larger porosity compared to other IonomIMs. The CO2 adsorption capacity was affected by the different counterions for IonomIM-1, and a higher loading capacity for pure CO2 was observed for Mg2+. Furthermore, the IonomIMs showed an enhanced CO2 selectivity in CO2/CH4 and CO2/N2 gas mixtures at conditions used in pressure swing adsorption and vacuum swing adsorption applications. It was also observed that the concentration of ionic groups plays a vital role in changing the CO2 gas adsorption and selectivity.
中文翻译:
具有固有微孔性的离子功能化聚合物,用于气体分离应用
离子官能化的微孔材料对于节能的气体吸附和分离过程具有吸引力,并且在与工业应用相关的压力范围和组成下,在气体混合物中显示出令人鼓舞的结果。在这项工作中,我们研究了不同的抗衡离子(Li +,Na +,K +,Rb +和Mg 2+)对孔隙度,二氧化碳(CO 2离子官能化PIM-1(IonomIMs)中的气体吸附和选择性,该聚合物属于直链和无定形微孔聚合物的一类,称为固有微孔聚合物(PIM)。发现离子基团浓度的增加导致自由体积的减少,导致较少的多孔聚合物骨架,并且与其他IonomIM相比,Mg 2+官能化的IonomIM显示出相对较大的孔隙率。的CO 2吸附量为IonomIM-1受不同的抗衡离子,和用于纯CO一个更高的负载能力2观察到的Mg 2+。此外,IonomIMs在CO 2 / CH中显示出增强的CO 2选择性。4和CO 2 / N 2气体混合物在变压吸附和真空变压吸附应用中使用的条件下。还观察到离子基团的浓度在改变CO 2气体的吸附和选择性方面起着至关重要的作用。
更新日期:2018-03-19
中文翻译:
![](https://scdn.x-mol.com/jcss/images/paperTranslation.png)
具有固有微孔性的离子功能化聚合物,用于气体分离应用
离子官能化的微孔材料对于节能的气体吸附和分离过程具有吸引力,并且在与工业应用相关的压力范围和组成下,在气体混合物中显示出令人鼓舞的结果。在这项工作中,我们研究了不同的抗衡离子(Li +,Na +,K +,Rb +和Mg 2+)对孔隙度,二氧化碳(CO 2离子官能化PIM-1(IonomIMs)中的气体吸附和选择性,该聚合物属于直链和无定形微孔聚合物的一类,称为固有微孔聚合物(PIM)。发现离子基团浓度的增加导致自由体积的减少,导致较少的多孔聚合物骨架,并且与其他IonomIM相比,Mg 2+官能化的IonomIM显示出相对较大的孔隙率。的CO 2吸附量为IonomIM-1受不同的抗衡离子,和用于纯CO一个更高的负载能力2观察到的Mg 2+。此外,IonomIMs在CO 2 / CH中显示出增强的CO 2选择性。4和CO 2 / N 2气体混合物在变压吸附和真空变压吸附应用中使用的条件下。还观察到离子基团的浓度在改变CO 2气体的吸附和选择性方面起着至关重要的作用。