硅酸盐学报

玉米醇溶蛋白导向合成b 轴取向Silicalite-1 担载膜

单位：1. 天津大学理学院化学系天津300072 2. 天津大学化工学院天津300072

分类号：TQ028.4；O6.332

出版年,卷(期):页码：2015,43(11):1567-1572

DOI：10.14062/j.issn.0454-5648.2015.11.08

摘要：

采用旋涂工艺在多孔氧化铝(α-Al2O3)基片上制备玉米醇溶蛋白(zein)膜，以预涂zein 膜的Al2O3 基材为载体，通过原位水热法合成了silicalite-1 担载膜。结果表明：以zein 膜为模板可有效导向合成优先b 轴取向silicalite-1 晶体，所制备silicalite-1膜层表面平整且连续性好。而在未涂覆zein 膜的Al2O3 基材上所合成的silicalite-1 晶体呈随机取向，表面缺陷较大，需多次重复水热合成制备。渗透蒸发实验中选择有机溶剂含量为3%(质量分数)的乙醇/水和丙酮/水二元体系，考察料液温度在25~40 ℃范围内优先b 轴取向silicalite-1 担载膜对有机组分的筛分浓缩能力。实验表明，对乙醇和丙酮两组分的分离因子大小顺序为乙醇、丙酮，渗透通量的大小则刚好相反。

Zein film was deposited via spin coating zein ethanol aqueous solutions onto porous asymmetric α-Al2O3 tablets, and thehighly b-axle oriented silicalite-1 membrane on the Al2O3 substrate pre-coated with zein film was prepared by in-situ hydrothermalsynthesis method. The results show that the zein film as a direct template is conducive to the formation of highly b-axle orientedsilicalite-1 crystals, and the b-axle oriented silicalite-1 membrane presents the surface flatness, uniform thickness and excellentcontinuity. However, the prepared silicalite-1 membrane on the Al2O3 substrate without zein film exhibits random orientation andbigger surface defects and repeats the hydrothermal procedures for several times to finish the preparation of separation layer. Basedon the result of the pervaporation experiment, the highly b-axle oriented silicalite-1 membrane can effectively concentrate ethanol andacetone from 3% (mass fraction) ethanol–water and acetone–water binary feeds due to the pervaporation. The separation factor (α) ofethanol is lower than that of acetone , but the total permeate fluxe of ethanol is higher than that of acetone at 25-40 ℃.

基金项目：

国家自然科学基金项目(50972103)；教育部留学回国人员科研启动基金项目(2009-1001)；国家级大学生创新训练项目。

作者简介：

第一作者：张彦香(1989—)，女，硕士研究生。通信作者：马亚鲁(1969—)，女，博士，副教授。

参考文献：

[1] SHAN L J, SHAO J, WANG Z B, et al. Preparation of zeolite MFImembranes on alumina hollow fibers with high flux for pervaporation[J]. J Membr Sci, 2011, 378: 319–329.

[2] DROBEK M, YACOU C, MOTUZAS J, et al. Long term pervaporationdesalination of tubular MFI zeolite membranes [J]. J Membr Sci, 2012,415/416: 816–823.

[3] LEE I, BUDAY J L, JEONG H K. μ-Tiles and mortar approach: Asimple technique for the facile fabrication of continuous b-oriented MFIsilicalite-1 thin films [J]. Micropor Mesopor Mater, 2009, 122:288–293.

[4] KIM E, CHOI J, TSAPATSIS M. On defects in highly a-oriented MFImembranes [J]. Micropor Mesopor Mater, 2013, 170: 1–8.

[5] 刘秀凤, 郎林, 张宝泉, 等. 在壳聚糖改性的硅锆复合中间层上原位水热合成b-轴取向silicalite-1 分子筛膜 [J]. 化工学报, 2006,57(4): 1019–1025.LIU Xiufeng, LANG Lin, ZHANG Baoquan, et al. CIESC J (inChinese), 2006, 57(4): 1019–1025.

[6] LI S, DEMMELMAIER C, ITKIS M, et al. Micropatterned orientedzeolite monolayer films by direct in situ crystallization [J]. Chem Mater,2003, 15: 2687–2689.

[7] XIAO W, YANG J H, LU J M, et al. A novel method to synthesize highperformance silicalite-1 membrane [J]. Sep Purif Technol, 2009, 67:58–63.

[8] XIAO W, YANG J H, LU J M, et al. Preparation and characterization ofsilicalite-1 membrane by counter-diffusion secondary growth [J]. JMembr Sci, 2009, 345: 183–190.

[9] WANG Z B, YAN Y S. Oriented zeolite MFI monolayer films on metalsubstrates by in situ crystallization [J]. Micropor Mesopor Mater, 2001,48: 229–238.

[10] GOUZINIS A, TSAPATSIS M. On the preferred orientation andmicrostructural manipulation of molecular sieve films prepared bysecondary growth [J]. Chem Mater, 1998, 10: 2497–2504.

[11] LOVALLO M C, TSAPATSIS M. Preferentially oriented submicronsilicalite membranes [J]. AIChE J, 1996, 42(11): 3020–3029.

[12] LOVALLO M C, GOUZINIS A, TSAPATSIS M. Synthesis andcharacterization of oriented MFI membranes prepared by secondarygrowth [J]. AIChE J, 1998, 44(8): 1903–1912.

[13] LEE J S, LEE Y J, TAE E L, et al. Synthesis of zeolite as orderedmulticrystal arrays [J]. Science, 2003, 301: 818–822.

[14] PALIWAL R, PALAKURTHI S. Zein in controlled drug delivery andtissue engineering [J]. J Controlled Release, 2014, 189: 108–122.

[15] SHUKLA R, CHERYAN M. Zein: the industrial protein from corn [J].Ind Crop Prod, 2001, 13: 171–192.

[16] HAN Y L, XU Q, LU Z Q, et al. Preparation of transparent zein filmsfor cell culture applications [J]. Colloid Surf B: Biointerfaces, 2014,120: 55–62.

[17] 马亚鲁, 刘芬, 马媛媛, 等. 多步组装合成介孔二氧化硅担载膜[J].硅酸盐学报, 2010, 38(2): 227–233.MA Yalu, LIU Fen, MA Yuanyuan, et al. J Chin Ceram Soc, 2010,38(2): 227–233.

[18] XIAO W, YANG J H, SHEN D, et al. Synthesis and property ofsilicalite-1 membranes by restricting growth method with dilutesolution [J]. Micropor Mesopor Mater, 2010, 129: 22–29.

[19] YEONG Y F, ABDULLAH A Z, AHMAD A L, et al. Synthesis,structure and acid characteristics of partially crystalline silicalite-1based materials [J]. Micropor Mesopor Mater, 2009, 123:129–139.

[20] BOWEN T C, KALIPCILAR H, FALCONER J L, et al. Pervaporationof organic/water mixtures through B-ZSM-5 zeolite membranes onmonolith supports [J]. J Membr Sci, 2003, 215: 235–247.

服务与反馈：

【文章下载】【加入收藏】