Highly efficient polymer-MOF nanocomposite membrane for pervaporation separation of water/methanol/MTBE ternary mixture
Highly efficient polymer-MOF nanocomposite membrane for pervaporation separation of water/methanol/MTBE ternary mixture
复制标题
用于水/甲醇/MTBE三元混合物渗透汽化分离的高效聚合物-MOF纳米复合膜
DOI：
10.1016/j.cherd.2016.11.027
复制
发表时间：
2017-01-01
影响因子：
3.9
通讯作者：
Liu, Qinglin
中科院分区：
文献类型：
--
作者：
Gao, Runsheng;Zhang, Qiugen;Liu, Qinglin
通过将ZIF-8纳米晶引入到聚芳醚酮（PEK-c）中，制备了新型聚合物-多氟醚（MOF）纳米复合膜，用于水/甲醇/甲基叔丁基醚（MTBE）三元混合物的渗透汽化分离。合成了尺寸为20-40 nm的ZIF-8纳米晶用于制备膜。所得膜具有均匀分散并嵌入膜基质中的ZIF-8纳米晶体，其中可调节的ZIF-8负载量高达20重量%。此外，该膜具有均匀的微观结构、良好的热稳定性和机械稳定性。它们对水/甲醇/甲基叔丁基醚（MTBE）混合物的渗透汽化分离具有良好的性能。ZIF-8的掺入大大提高了渗透通量。在低ZIF-8负载下，水选择性增加并且总分离因子非常高并且大于1.97 X 10（4）。典型地，具有4wt%ZIF-8的膜具有1.48kg μ m m（-2）h（-1）的总通量，水和总分离因子分别为181和1.97 × 10（4）。新型纳米复合膜在高效净化甲基叔丁基醚方面具有巨大的潜力。(C)2016化学工程师学会。Elsevier B. V.出版，保留所有权利。
Novel polymer-MOF nanocomposite membranes are prepared via the incorporation of ZIF-8 nanocrystals into cardo polyetherketone (PEK-c) for pervaporation separation of water/methanol/MTBE ternary mixtures. The ZIF-8 nanocrystals with 20-40 nm size are synthesized for preparing membranes. The resulting membranes have ZIF-8 nanocrystals dispersed homogeneously and embedded in the membrane matrix with adjustable ZIF-8 loading of up to 20 wt%. Moreover, the membranes have homogeneous microstructure, good thermal and mechanical stabilities. They show favorable pervaporation performances for separation of the water/methanol/MTBE mixtures. The incorporation of ZIF-8 greatly enhances the permeation flux. At the low ZIF-8 loading, the water selectivity increases and the total separation factor is very high and greater than 1.97 x 10(4). Typically, the membrane with 4wt% ZIF-8 has the total flux of 1.48 kg mu m m(-2) h(-1), water and total separation factor of 181 and 1.97 x 10(4) respectively. The newly developed nanocomposite membranes have a great potential in high-efficient purification of MTBE. (C) 2016 Institution of Chemical Engineers. Published by Elsevier B.V. All rights reserved.