膜科学与技术

ZIF-8填充聚硅氧烷膜的制备及渗透汽化水中分离正丁醇

作者：张春芳，董亮亮，白云翔，顾瑾，孙余凭

单位：江南大学食品胶体与生物技术教育部重点实验室化学与材料工程学院无锡 214122

关键词：聚二甲基硅氧烷膜；ZIF-8；渗透汽化；正丁醇；生物燃料

出版年,卷(期):页码： 2013,33(4):88-93

摘要：

两步法制备了ZIF-8填充聚二甲基硅氧烷（PDMS）渗透汽化膜PDMS/ZIF-8，用以分离水中正丁醇。并对该膜的化学结构、形貌及热稳定性进行了表征。结果表明：该膜对正丁醇有很高的选择渗透性，随着ZIF-8添加量的增加，分离因子先增加后下降，而总通量单调下降。当ZIF-8添加量为2wt%时（PDMS/ZIF-8-2膜），分离因子达到最高。另一方面，随着操作温度的上升，PDMS/ZIF-8-2膜的通量和分离因子都增加。在60oC，料液浓度为0.96wt%时，PDMS/ZIF-8-2膜的分离因子及通量最高可达49.24和8.43 kg?m/(m2h)。

ZIF-8 filled polydimethylsiloxane (PDMS) membranes, PDMS/ZIF-8, were prepared by a two-step polymerization process, which were used as membrane material to recover n-butanol from aqueous solution by pervaporation (PV). The membranes demonstrated high n-butanol permselectivity and with the increase of ZIF-8 loading, the separation factor increased initially and then decreased, while the total flux decreased. The PDMS/ZIF-8 membranes containing 2 wt% ZIF-8, PDMS/ZIF-8-2, showed the highest separation factor. On the other hand, the separation factor and total flux of PDMS/ZIF-8-2 membrane increased with the increase of temperature. The separation factor and total ?ux reached 49.24 and 8.43 kg?m/(m2h), respectively, at 60 oC when the feed concentration of n-butanol is 0.96 wt%.

张春芳（1977-），女，内蒙古人，博士，副教授，主要研究方向，膜分离.*通讯联系人，E-mail：baisir223@163.com

参考文献：

[1]顾瑾，邓利容，白云翔，等．VTES交联PDMS渗透汽化膜分离水中乙醇性能研究[J]. 膜科学与技术, 2010, 30(2): 19-24.
[2]Schnabel S, Roizard D, Nguyen T, et al. Synthesis of novel block siloxane polymers for the removal of butanols from aqueous feed solutions[J]. Colloids Surfaces A: Physicochem Eng Aspects, 1998, 138(2): 335-343.
[3]Fouad E A, Feng X S. Use of pervaporation to separate butanol from dilute aqueous solutions: effects of operating conditions and concentration polarization [J]. J Membr Sci, 2008, 323(2): 428-435.
[4]Srinivasan K, Palanivelu K, Gopalakrishnan A N. Recovery of 1-butanol from a model pharmaceutical aqueous waste by pervaporation[J]. Chem Eng Sci, 2007, 62(11): 2905-2914.
[5]Fu Y, Hu C, Lee K, et al. Separation of ethanol/water mixtures by pervaporation through zeolite-filled polysulfone membrane containing 3-aminopropyltrimethoxysilane[J]. Desalination, 2006, 193(1-3): 119-128.
[6]Fouad E A, Feng X S. Pervaporative separation of n-butanol from dilute aqueous solutions using silicalite-filled poly(dimethyl siloxane) membranes[J]. J Membr Sci, 2009, 339(1-2): 120-125.
[7]Trzpit M, Soulard M, Patarin J, et al. The effect of local defects on water adsorption in silicalite-1 zeolite: a joint experimental and molecular simulation study[J]. Langmuir, 2007, 23(20): 10131-10139.
[8]Ma S Q, Sun D F, Simmons J M, et al. Metal-organic framework from an anthracene derivative containing nanoscopic cages exhibiting high methane uptake [J]. J Am Chem Soc, 2008, 130(3): 1012-1016.
[9]Remi J C S, Rémy T, Hunskerken V V, et al. Biobutanol Separation with the Metal–Organic Framework ZIF-8[J]. ChemSusChem, 2011, 8(4): 1074-1077.
[10]Ordoñez M J C, Balkus Jr K J, Ferraris J P, et al. Molecular sieving realized with ZIF-8/Matrimid® mixed-matrix membranes[J]. J Membr Sci, 2010, 361(1-2): 28-37.
[11]白云翔，杨乐，顾瑾，等. ZSM-5沸石填充聚氨酯膜的制备及渗透汽化分离水中乙酸异丙酯[J]. 化工进展, 2011, 30(9): 1919-1925.
[12]Hayashi H, Cote A P, Furukawa H, et al. Zeolite a imidazolate frameworks[J]. Nat Mater, 2007, 7(6): 501-506.
[13]Yi S L, Su Y, Wan Y H. Preparation and characterization of vinyltriethoxysilane (VTES) modified silicalite-1/PDMS hybrid pervaporation membrane and its application in ethanol separation from dilute aqueous solution[J]. J Membr Sci, 2010, 360(1-2): 341-351.
[14]Yeom C K, Kim H K, Rhim J W. Removal of trace VOCs from water through PDMS membranes and analysis of their permeation behaviors[J]. J Appl Polym Sci, 1999, 4(73): 601-611.

服务与反馈：

【文章下载】【加入收藏】

《膜科学与技术》编辑部地址：北京市朝阳区北三环东路19号蓝星大厦邮政编码：100029 电话：010-64426130/64433466 传真：010-80485372邮箱：mkxyjs@163.com