膜科学与技术

优先渗透CO2的TS-1/C杂化功能炭膜的制备研究

作者：姜大伟¹，王同华¹，李琳¹，孙美悦¹，郭新闻¹，曹义鸣²

单位： 1.大连理工大学化工学精细化工国家重点实验室，炭素材料研究室，膜科学技术研究开发中心，

关键词： PMDA-ODA；钛硅分子筛；功能炭膜；渗透系数；二氧化碳

出版年,卷(期):页码： 2011,31(4):36-41

摘要：

以PMDA-ODA型聚酰胺酸为原料，通过掺杂钛硅分子筛（TS-1）制备气体分离用杂化功能炭膜。系统考察了钛硅分子筛（TS-1）掺杂量、炭化温度等因素对功能炭膜气体渗透性和分离性能的影响，利用FT-IR、XRD、TG和TEM等分析手段对TS-1/C杂化原膜及其在不同温度下炭化的炭膜结构和性能进行表征。结果表明：掺杂钛硅分子筛（TS-1）可大幅提高炭膜对CO2的渗透性能；当掺杂浓度为20wt.%，炭化温度为600℃时，CO2、H2、O2、N2、CH4的渗透系数分别可达9087 Barrer、8111 Barrer、2017 Barrer、426 Barrer和357 Barrer；当炭化温度为700℃以上时，功能炭膜对各气体的渗透性急剧降低，气体分离性大幅提高。

A novel composite functional carbon membrane for gas separation is designed and prepared by incorporating TS-1 nanoparticles into the thermosetting resins PMDA-ODA. The effects of the content of the TS-1 and pyrolysis temperatures on the permeability and selectivity performance of the functional carbon membranes are studied. The synthesized membranes are also characterized with TG, FT-IR, TEM and XRD. Results show that the addition of the TS-1 nanoparticles influences the performance of the membranes a lot, especially to the absorbable gas CO2 whose permeability was increased most. The permeabilities of membranes doping with 20.wt% TS-1 and carbonized at 600℃ for pure gas CO2、H2、O2、N2、CH4 are 9087、8111、2017、426 and 357 Barrer(1 Barrer=10-10 cm3(STP)?cm?cm-2?s-1?cmHg-1 ) , respectively. When the membranes are carbonized in temperature above 700℃, the permeabilities of the membranes for all the gases exhibited a drastic drop, while the selectivities are much improved.

姜大伟(1982-), 男, 河南南阳人, 硕士生, 主要从事炭材料方面的研究工作

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