摘要
为了改善混合基质膜中分散相与连续相间的兼容性,设计了一种新型的离子液体负载金属有机骨架(IL@UiO-66-NH2)纳米材料作为填料,通过涂覆法制备聚酰亚胺基(6FDA ODA)混合基质膜,并研究IL@UiO-66-NH2含量及进料压力对气体分离性能的影响.利用SEM、XRD和FTIR对IL@UiO-66-NH2纳米颗粒和混合基质膜进行表征.结果表明,IL@UiO-66-NH2纳米颗粒均匀分散于聚酰亚胺基质中并且没有出现非选择性孔腔.利用混合基质膜构建CO2/CH4分离系统,当混合基质膜中IL@UiO-66-NH2负载量为质量分数15%时,CO2的渗透性为26.32 Barrer,CO2/CH4的分离因子为53.91,比纯聚酰亚胺膜分别提高了46.55%和26.23%.
In order to improve the interfacial compatibility between the inorganic dispersed phase and the organic continuous phase of the mixed matrix membrane(MMM),novel IL@UiO-66-NH2 nanoparticles were designed as fillers to prepare MMMs by coating method.The effect of IL@UiO-66-NH2 content and feed pressure on the gas separation performance of the membrane was investigated.The IL@UiO-66-NH2 particle and mixed matrix membrane were characterized by SEM,XRD and FTIR.The results showed that the IL@UiO-66-NH2 nanoparticles were uniformly dispersed in the polyimide matrix and no non-selective voids were formed in the MMMs.The resulting membrane was used to construct the CO2/CH4 separation system.The results show that when the loading of IL@UiO-66-NH2 in the membrane is 15%,the permeability of CO2 is 26.32 Barrer,and the separation factor of CO2/CH4 is 53.91,which is increased by 46.55%and 26.23%than that of the pure polyimide membrane.
作者
刘冰
姚杰
李丹
孙浩
LIU Bing;YAO Jie;LI Dan;SUN Hao(School of Environment, Harbin Institute of Technology, Harbin 150090, China;National Engineering Center of Urban Water Resources, Harbin 150090, China)
出处
《膜科学与技术》
CAS
CSCD
北大核心
2020年第2期14-21,52,共9页
Membrane Science and Technology
基金
中央引导地方科技发展专项(ZY17C10)。
