UiO-66-NH2/聚醚酰亚胺中空纤维膜的制备及其用于CO2分离的研究
Preparation of UiO-66-NH2/polyetherimide hollow fiber membrane for CO2 separation
朱海山 1刘向东 1郑海敏 1何明 2段翠佳 2陈赞2
作者信息
- 1. 中海油研究总院有限责任公司,北京 100028
- 2. 中海油天津化工研究设计院有限公司,天津 300131
- 折叠
摘要
以高比表面积、纳米尺寸的UiO-66-NH2 作分散相,以聚醚酰亚胺(PEI)作连续相,通过干-湿相转化纺丝法分别制备了PEI和UiO-66-NH2/PEI中空纤维气体分离膜.通过FT-IR、XRD、SEM等研究了UiO-66-NH2 对中空纤维膜结构和性能的影响.结果表明,UiO-66-NH2 的引入使中空纤维膜过渡层结构从树枝状结构变为泡孔状结构;在UiO-66-NH2/PEI中空纤维膜的CO2/N2 选择性与PEI中空纤维膜相比基本保持不变的情况下,UiO-66-NH2/PEI中空纤维膜的CO2 渗透通量从8.09 GPU提升到32.09 GPU.
Abstract
PEI membrane and UiO-66-NH2/PEI hollow fiber gas separation membrane are respectively prepared via a dry-wet conversion spinning method with polyetherimide(PEI)as continuous phase and high specific surface area,nano-size UiO-66-NH2 as the dispersed phase.The effects of UiO-66-NH2 on the structure and properties of hollow fiber membranes are studied by means of FT-IR,XRD and SEM.It is shown that the transition layer structure of the hollow fiber membrane changes from dendritic structure to bubble-like structure due to the addition of UiO-66-NH2.The CO2 permeance of UiO-66-NH2/PEI hollow fiber membrane increases from 8.09 GPU to 32.09 GPU while the CO2/N2 selectivity of UiO-66-NH2/PEI hollow fiber membrane remains basically the same as that of PEI hollow fiber membrane.
关键词
UiO-66-NH2/聚醚酰亚胺/中空纤维混合基质膜/CO2分离Key words
UiO-66-NH2/polyether imide/hollow fiber mixed matrix membrane/CO2 separation引用本文复制引用
出版年
2024
NETL
NSTL
万方数据