高校化学工程学报2017，Vol.31Issue(5)：1042-1051,10.DOI:10.3969/j.issn.1003-9015.2017.05.005
用于从CO2-DMC体系分离CO2的PDMS复合膜制备与分离性能
Preparation and Separation Performance of PDMS Composite Membranes for CO2 Separation from CO2-DMC System
贺志敏 1汤志刚 1Ataeivarjovi Ebrahim 1郭栋 1赵志军 1李红伟 1邢潇1
作者信息
- 1. 清华大学 化学工程联合国家重点实验室,北京 100084
- 折叠
摘要
Abstract
Solvent absorption coupled membrane desorption is a novel pre-combustion CO2 capture process with lower energy consumption. Preparation of desorption membranes with high flux and high separation factor is the key of this technology. A polydimethylsiloxane (PDMS) modified composite pervaporation membrane with cellulose acetate ultra-filtration layer was prepared to separate CO2 from CO2-dimethyl carbonate (DMC) solution. The result shows that membrane performance is enhanced via adjustment of dissolution activity, diffusion activity and reaction activity by adding different cross-linking agents in PDMS. Meanwhile, the effects of modification cross-linking agents, membrane thickness, cross-linking temperature, desorption solution concentration and desorption temperature on membrane desorption performance were studied. Compared with the literature data, the 3-aminopropyltriethoxysilane (APTES)- phenyltriethoxysilane(PTES)- PDMS composite membrane obtained under optimal preparing conditions has much higher flux (4970 g.m-2.h-1) and separation factor (79.3), which is promising for industrial application.关键词
CO2捕集/膜解吸/PDMS膜/膜改性/渗透汽化Key words
CO2 capture/membrane desorption/PDMS membrane/membrane modification/pervaporation分类
化学化工引用本文复制引用
贺志敏,汤志刚,Ataeivarjovi Ebrahim,郭栋,赵志军,李红伟,邢潇..用于从CO2-DMC体系分离CO2的PDMS复合膜制备与分离性能[J].高校化学工程学报,2017,31(5):1042-1051,10.
