Tubular thermal crosslinked-PEBA/ceramic membrane for aromatic/aliphatic pervaporation
Tubular thermal crosslinked-PEBA/ceramic membrane for aromatic/aliphatic pervaporation
复制标题
用于芳香族/脂肪族渗透汽化的管式热交联-PEBA/陶瓷膜
DOI：
10.1016/j.memsci.2015.03.037
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发表时间：
2015-07
影响因子：
9.5
通讯作者：
Ji Shulan
中科院分区：
文献类型：
--
作者：
Wu Tong;Wang Naixin;Li Jie;Wang Lin;Zhang Wei;Zhang Guojun;Ji Shulan
在化学工业中，渗透蒸发法是一种具有成本竞争力的分离芳烃/脂肪烃混合物的方法。在本研究中，利用商用聚醚-嵌段酰胺（PEBA）和陶瓷管状基底，通过简单的热交联方法制备了用于分离芳香族/脂肪族混合物的渗透蒸发膜。采用溶胀实验和反相色谱法测定了甲苯和正庚烷在PEBA中的吸附和扩散特性。利用红外光谱（FTIR）和x射线衍射（XRD）研究了热交联法制备PEBA分子的氢键和结晶度。利用SEM和EDX对PEBA/陶瓷复合膜的形貌和结构进行了表征。通过控制PEBA浓度、热交联温度和时间可以调节复合膜的分离性能。陶瓷管基板可以抑制膜的过度膨胀，从而提高膜的稳定性。此外，在PEBA基体中掺入不同类型的填料以提高分离性能。结果表明，PEBA/石墨杂化膜对50%甲苯/正庚烷混合物的分离率最高。本研究有望在芳香/脂肪族渗透蒸发领域拓展膜材料，简化膜制备工艺。
Pervaporation could be a cost-competitive process for separating aromatic/aliphatic hydrocarbon mixtures in the chemical industry. In this study, commercial poly(ether-block-amide) (PEBA) and ceramic tubular substrates were used to prepare pervaporation membrane for separating aromatic/aliphatic mixtures through a facile thermal crosslinking method. The adsorption and diffusion properties of toluene andn-heptane in PEBA were determined by swelling experiment and inverse gas chromatography technique. FTIR and XRD were used to investigate the hydrogen bonding and crystallinity of PEBA molecule through thermal crosslinking. The morphology and structure of PEBA/ceramic composite membrane were characterized by SEM and EDX. The separation performance of the composite membrane can be adjusted by controlling PEBA concentration, thermal crosslinking temperature and time. Ceramic tubular substrate could suppress the excessive swelling and thereby enhance the stability of the membrane. Furthermore, different types of fillers were incorporated into PEBA matrix to improve the separation performance. The results demonstrate that PEBA/graphite hybrid membrane has the highest separation factor for separating 50 wt% toluene/n-heptane mixtures. This study is expected to extend the membrane material and simplify the membrane preparation procedures in aromatic/aliphatic pervaporation fields.
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影响因子：
8.6
作者：
D. Roizard;A. Nilly;P. Lochon
通讯作者：
D. Roizard;A. Nilly;P. Lochon
影响因子：
9.5
作者：
Jian Chen;Ji-ding Li;Rongbing Qi;H. Ye;Cuixian Chen
通讯作者：
Jian Chen;Ji-ding Li;Rongbing Qi;H. Ye;Cuixian Chen
影响因子：
4.2
作者：
Liu, L;Chakma, A;Feng, XS
通讯作者：
Feng, XS
DOI：
10.1080/10601320701786984
发表时间：
2008-01
期刊：
Journal of Macromolecular Science, Part A
影响因子：
--
作者：
H. Ye;Ji-ding Li;Yangzheng Lin;Jian Chen;Cuixian Chen
通讯作者：
H. Ye;Ji-ding Li;Yangzheng Lin;Jian Chen;Cuixian Chen
DOI：
10.1016/j.memsci.2011.05.060
发表时间：
2011-09
期刊：
Fuel and Energy Abstracts
影响因子：
--
作者：
N. Le;Yan Wang;T. Chung
通讯作者：
N. Le;Yan Wang;T. Chung