膜科学与技术

MFI分子筛膜在光纤微谐振器上合成及表征

作者：郑国龙，程浩，周兰英

单位：北京理工大学机械与车辆学院

关键词：模板剂；沸石分子筛；微谐振器；传感器

出版年,卷(期):页码： 2012,32(2):59-64

摘要：

采用原位水热合成法，分别采用四丙基氢氧化铵（TPAOH）和正丁胺（NBA）为模板剂，在光纤微谐振器表面成功制备出MFI沸石分子筛膜。采用X射线衍射（XRD）和扫描电镜（SEM）对膜的物相结构和晶体形貌进行表征，通过表征分析可以看出，采用四丙基氢氧化铵（TPAOH）为模板剂合成出的沸石晶体具有规则的六棱柱外形，晶粒大小约2 μm，而采用正丁胺(NBA)为模板剂合成出的沸石晶体没有规则外形，晶粒大小约为500 nm。采用镀有沸石的长周期光栅（LPFG）检测体积分数为5%丙酮气体，长周期光栅的谐振波长蓝移了2nm，沸石膜在光纤微谐振表面的合成可用于精密传感器的开发。

Preparation of MFI zeolite molecular sieve membranes on optical fiber micro-resonators by using TPAOH and NBA as templates was investigated by in situ hydrothermal crystallization. Crystal structure and surface morphology of the obtained membranes were characterized by XRD and SEM. It is showed that we can get good zeolite membranes by using TPAOH and NBA as templates. Crystals with the size of about 2 μm were synthesized by using TPAOH as template have regular coffin shape, while crystals with the size of about 500 nm were synthesized by using NBA as template have no regular shape. Furthermore, the MFI zeolite-LPFG sensor was tested for detection of 5% volume fraction acetone gas. The resonant wavelength of LPFG shifted about 2nm toward smaller wavelength. Upon loading analyte molecules, the refractive index of the MFI zeolite changes in the close of the fiber index where the micro-resonator has a large response to achieve high sensitivity.

郑国龙（1984-），男，山东，硕士研究生，主要从事沸石镀膜研究，（Tel.15210501075 Email:zhengguolong10@163.com）

参考文献：

[1] 徐如人，庞文琴，于吉红等. 分子筛与多孔材料化学[M].北京：科学出版社，2004年.
[2] Lucio Bonaccorsi, Edoardo Proverbio. Synthesis of thick zeolite 4A coatings on stainless steel[J]. Micropor Mesopor Mater,2004,74(3):221-229.
[3] Shiguang Li, Guerrero Alvarado, et al. Effects of impurities on CO2/CH4 separation through SAPO-34 membranes[J]. Membr Sci,2005,251(1):59-66.
[4] Satoshi Yamazaki, Kazuo Tsutsumi. Synthesis of an A-type zeolite membrane on silicon oxide film-silicon, quartz plate and quartz fiber filter[J]. Micropor Mater, 1995, 4(2):205-212.
[5] V. Engström, B. Mihailova, J. Hedlund, et al. The effect of seed size on the growth of silicalite-1 films on gold surfaces[J]. Micropor Mesopor Mater, 2000,3 8(1):51-60.
[6] N. van der Puil, F. M. Dautzenberg, et al. Preparation and catalytic testing of zeolite coatings on preshaped alumina supports[J]. Micropor Mesopor Mater,1999,27(1):95-106.
[7] Norikazu Nishiyama, Keuta Ichioka, Dong-Huy Park, et al. Reactant-selective hydrogenation over composite silicalite-1-coated Pt/TiO2 particles [J]. Ind Eng Chem Res,2004,43(5):1211-1215.
[8] Mark E. Davis, Raul F. Lobo. zeolite and molecular sieve synthesis[J]. Chem. Mater.1992,4:756-768.
[9] Xianhui Bu, Pingyun Feng, Galen D.Stucky. large cage zeolite structure with multidimensional 12-ring channels[J]. science. 1997,278(5348):2080-2085.
[10] Zhengbao Wang, Yushan Yan. Controlling crystal orientation in zeolite MFI thin films by direct in situ crystallization[J]. Chem Mater,2001,13:1101-1107.
[11] 王爱琴，梁东白，孙孝英等. 堇青石蜂窝陶瓷载体上ZSM-5及Anacime沸石的原位合成[J]. 催化学报，2000，21(1):19-22.
[12] Heather J. Patrick, Alan D. Kersey, Frand Bucholtz. Analysis of the Response of Long Period Fiber Gratings to External Index of Refraction[J]. Journal of Light-wave Technology, 1998, 16(9):1606~1612.
[13] 徐如人，李守贵. 沸石分子筛的生成机理与晶体生长（V）-L型沸石晶体生长动力学[J]. 高等学校化学学报，1983,4（1）：1-6.
[14] 张延风，卢冠忠，许中强等. MFI型分子筛膜的制备与表征[J]. 催化学报，2000,21（5）：447-450.
[15] Zelimir Gabelica, Niels Blom, Eric G. Derouane. Synthesis and characterization of ZSM-5 type zeolite-3.A critical evaluation of the role of alkali and ammonium cations[J]. Appl. Catal.,1982,5(2):227-248.

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