Preparation and gas separation properties of poly(furfuryl alcohol)-based C/CMS composite membranes
Preparation and gas separation properties of poly(furfuryl alcohol)-based C/CMS composite membranes
复制标题
聚糠醇基C/CMS复合膜的制备及气体分离性能
DOI：
10.1016/j.seppur.2007.05.019
复制
发表时间：
2008-01
影响因子：
8.6
通讯作者：
Song, Chengwen
中科院分区：
文献类型：
--
作者：
Qiu, Jieshan;Wang, Xiuyue;Wang, Tonghua;Cao, Yiming;Song, Chengwen
以平均孔径为0.11μm、孔隙率为40.3%的煤基多孔炭管为支撑体，成功制备了C/CMS气体分离复合膜。使用粘性聚（糠醇）液体涂覆管状载体以形成有机层，该有机层在热解后转化为薄的碳膜顶层。在25、60和80°C下通过分子探针法评价了所制备的碳膜的气体分离性能。利用SEM、HRTEM、FTIR和XRD等技术研究了C/CMS复合膜在热解过程中的形貌和结构变化。结果表明，用粘性聚糠醇溶液一步涂布，然后热解，可制得表层均匀、无缺陷的C/CMS复合膜。所制备的C/CMS复合膜对H2/N2、CO2/N2、O2/N2和CO2/CH等气体对具有优异的气体分离性能，25°C时的最高选择透过率分别可达465.0、58.8、13.2和160.5。结果表明，随着热解温度从300 °C升高到700°C，复合膜的渗透率降低，而选择性渗透率增加。在热解过程中，聚（糠醇）的聚合物结构已转化为具有超微孔的无定形乱层碳结构。对于所制备的C/CMS复合膜，在本工作中的气体分离性能表现出很大的竞争相对于其他碳膜报道。这表明由糠醇聚合物制备的C/CMS复合膜是一种很有前途的气体分离膜。
C/CMS composite membranes from poly(furfuryl alcohol) for gas separation were successfully prepared, in which porous coal-based carbon tubes with an average pore diameter of 0.11μm and a porosity of 40.3% were used as support. The tubular support was coated using viscous poly(furfuryl alcohol) liquid to form an organic layer that was transformed into a thin top layer of carbon membrane after pyrolysis. The gas separation performance of the as-prepared carbon membranes was evaluated at 25, 60 and 80°C by molecular probe method. The morphology and structure changes of C/CMS composite membranes during pyrolysis were examined using SEM, HRTEM, FTIR and XRD techniques. The results show that C/CMS composite membranes with uniform and defect-free thin top layer can be made by one-step coating with viscous poly(furfuryl alcohol) liquid and following pyrolysis. The as-prepared C/CMS composite membranes have excellent gas separation properties for gas pairs such as H2/N2, CO2/N2, O2/N2and CO2/CH, and the highest permselectivity at 25°C can reach up to 465.0, 58.8, 13.2 and 160.5, respectively. It has been found that the permeabilities of the composite membranes decrease while the permselectivities increase as the pyrolysis temperature increases from 300 to 700°C. During pyrolysis, the polymeric structure of poly(furfuryl alcohol) has been transformed into an amorphous turbostratic carbon structure with ultramicropores. For the as-prepared C/CMS composite membranes, the gas separation performance in this work exhibits great competition respect to other carbon membranes reported. These clearly indicate that the C/CMS composite membranes prepared from furfuryl alcohol polymers is a promising membrane for gas separation.
登录
查看更多内容
影响因子：
9.5
作者：
M. Shiflett;H. C. Foley
通讯作者：
M. Shiflett;H. C. Foley
影响因子：
10.9
作者：
Elisa Barbosa-Coutinho;V. Salim;C. P. Borges
通讯作者：
Elisa Barbosa-Coutinho;V. Salim;C. P. Borges
影响因子：
10.9
作者：
M. Strano;H. C. Foley
通讯作者：
M. Strano;H. C. Foley
影响因子：
9.5
作者：
H. Park;C. Jung;Youn Kook Kim;S. Nam;S. Lee;Y. Lee
通讯作者：
H. Park;C. Jung;Youn Kook Kim;S. Nam;S. Lee;Y. Lee
影响因子：
10.9
作者：
Z. Wang;Zhongrui Lu;Xingxu Huang;R. Xue;Longwei Chen
通讯作者：
Z. Wang;Zhongrui Lu;Xingxu Huang;R. Xue;Longwei Chen