Metal-organic framework/poly(vinyl alcohol) nanohybrid membrane for the pervaporation of toluene/n-heptane mixtures
Metal-organic framework/poly(vinyl alcohol) nanohybrid membrane for the pervaporation of toluene/n-heptane mixtures
复制标题
用于甲苯/正庚烷混合物渗透蒸发的金属有机骨架/聚乙烯醇纳米杂化膜
DOI：
10.1016/j.memsci.2015.04.012
复制
发表时间：
2015-09
影响因子：
9.5
通讯作者：
Li Jian-Rong
中科院分区：
文献类型：
--
作者：
Zhang Yue;Wang Naixin;Ji Shulan;Zhang Rong;Zhao Cui;Li Jian-Rong
金属有机骨架材料作为一种新型的纳米杂化膜填料，近年来引起了人们的广泛关注。在这项工作中，MOF基Cu 3（BTC）2/PVA（BTC=苯-1，3，5-三羧酸酯，PVA=聚乙烯醇）纳米杂化膜的制备在陶瓷管基板上通过使用压力驱动组装方法。用扫描电子显微镜、X射线能谱仪和粉末X射线衍射仪对膜的形貌和结构进行了表征。将该膜用于渗透汽化分离50wt%甲苯/正庚烷混合物。考察了PVA浓度、Cu 3（BTC）2负载量、料液组成和操作温度对膜性能的影响。结果表明，与纯PVA膜相比，优化后的Cu 3（BTC）2/PVA膜的分离因子和渗透通量分别从8.9和14 g/（m2 h）提高到17.9和133 g/（m2 h）。对Cu_3（BTC）_2/PVA膜选择层中渗透组分的传递过程提出了推测。Cu 3（BTC）2粒子的引入提高了甲苯与膜之间的亲合力，对改善分离性能起到了关键作用。
As a new type of filler for nanohybrid membranes, metal–organic frameworks (MOFs) have attracted intense interest in recent years. In this work, MOF-based Cu3(BTC)2/PVA (BTC=benzene-1,3,5-tricarboxylate, PVA=poly(vinyl alcohol)) nanohybrid membranes were fabricated on a ceramic tubular substrate by using a pressure-driven assembly method. The morphology and structure of the resulting membranes were characterized by scanning electron microscope, energy dispersive X-ray spectrometer, and powder X-ray diffraction. The Cu3(BTC)2/PVA membranes were then used in separating 50 wt% toluene/n-heptane mixtures through pervaporation. The effects of PVA concentration, Cu3(BTC)2loading, feed composition, and operating temperature on membrane performances were explored. The results indicate that, compared with pristine PVA membrane, the separation factor and permeate flux of optimized Cu3(BTC)2/PVA membranes are improved from 8.9 and 14 g/(m2h) to 17.9 and 133 g/(m2h), respectively. A speculation of the transport process of permeating components in the selective layer of Cu3(BTC)2/PVA membrane was proposed. Enhanced affinity between toluene and the membrane through incorporating Cu3(BTC)2particles plays a key role in improving separation performances.
登录
查看更多内容
影响因子：
4.6
作者：
Xiqu Wang;J. Eckert;Lumei Liu;A. Jacobson
通讯作者：
Xiqu Wang;J. Eckert;Lumei Liu;A. Jacobson
DOI：
--
发表时间：
1977
期刊：
--
影响因子：
--
作者：
J. Gmehling;U. Onken
通讯作者：
J. Gmehling;U. Onken
影响因子：
9.5
作者：
Shi, Gui Min;Yang, Tingxu;Chung, Tai Shung
通讯作者：
Chung, Tai Shung
影响因子：
15
作者：
D. Peralta;G. Chaplais;A. Simon‐Masseron;K. Barthelet;C. Chizallet;A. Quoineaud;G. Pirngruber
通讯作者：
D. Peralta;G. Chaplais;A. Simon‐Masseron;K. Barthelet;C. Chizallet;A. Quoineaud;G. Pirngruber
影响因子：
8.6
作者：
McKinlay, A. C.;Eubank, J. F.;Morris, R. E.
通讯作者：
Morris, R. E.