| 含硼MFI型分子筛膜制备与渗透汽化性能研究 |
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| 引用本文： | 周荣飞,孔佑鑫,朱美华,张 飞,张小亮,陈祥树.含硼MFI型分子筛膜制备与渗透汽化性能研究[J].无机化学学报,2012,28(5):942-948. |
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| 作者姓名： | 周荣飞 孔佑鑫 朱美华 张 飞 张小亮 陈祥树 |
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| 作者单位： | 1. 江西师范大学化学化工学院,南昌 330022;江西师范大学江西省无机膜材料工程技术研究中心,南昌330022
2. 江西师范大学化学化工学院,南昌,330022 |
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| 基金项目： | 国家自然科学基金，科技部"863"和国际合作资助项目 |
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| 摘 要： | 采用二次生长法在廉价的多孔莫来石管状支撑体上合成了含硼MFI(B-MFI)分子筛膜。通过XRD、FTIR、ICP-AES、11BMAS NMR和SEM对形成膜和粉末进行表征,并考察了溶胶nB/nSiO2比、料液温度和浓度对分子筛膜渗透汽化性能的影响。表征结果证实BO4存在于MFI晶体骨架中。溶胶nB/nSiO2比对膜层微结构和渗透汽化性能有较大影响。B-MFI型分子筛膜选择性地从水溶液中透过有机物,在60℃、质量分数5%丙酮/水和乙醇/水体系的分离因子分别为260和70,均高于同等条件下制备的silicalite-1分子筛膜。
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| 关 键 词： | 含硼MFI型分子筛 二次生长法 渗透汽化 |
Studies on Synthesis and Pervaporation Performance of Boron-Substituted MFI Zeolite Membranes |
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| ZHOU Rong-Fei,KONG You-Xin,ZHU Mei-Hu,ZHANG Fei,ZHANG Xiao-Liang and CHEN Xiang-Shu.Studies on Synthesis and Pervaporation Performance of Boron-Substituted MFI Zeolite Membranes[J].Chinese Journal of Inorganic Chemistry,2012,28(5):942-948. |
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| Authors: | ZHOU Rong-Fei KONG You-Xin ZHU Mei-Hu ZHANG Fei ZHANG Xiao-Liang and CHEN Xiang-Shu |
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| Institution: | College of Chemistry and Chemical Engineering, Jiangxi Normal University, Nanchang 330022, China; Jiangxi Inorganic Membrane Materials Engineering Research Center, Jiangxi Normal University, Nanchang 330022, China,College of Chemistry and Chemical Engineering, Jiangxi Normal University, Nanchang 330022, China,College of Chemistry and Chemical Engineering, Jiangxi Normal University, Nanchang 330022, China,College of Chemistry and Chemical Engineering, Jiangxi Normal University, Nanchang 330022, China,College of Chemistry and Chemical Engineering, Jiangxi Normal University, Nanchang 330022, China and College of Chemistry and Chemical Engineering, Jiangxi Normal University, Nanchang 330022, China; Jiangxi Inorganic Membrane Materials Engineering Research Center, Jiangxi Normal University, Nanchang 330022, China |
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| Abstract: | Boron-substituted MFI(B-MFI) zeolite membranes were synthesized on low-cost porous mullite tubes by secondary growth.The as-synthesized membranes and powders were characterized by X-ray diffraction(XRD),fourier transform infrared spectroscopy(FTIR),Inductive coupled Plasma Emission Spectrometer(ICP-AES),(FTIR)11B magic angle spinning nuclear magnetic resonance(11B MAS NMR) and scanning electron microscope(SEM).The effects of nB/nSiO ratio in gel,feed temperature and concentration on pervaporation(PV) for acetone/water mixtures through B-MFI zeolite membranes were also investigated.The results of characterization verified BO4 substituted SiO4 in MFI framework.nB/nSiO ratio in gel took great effects on the microstructure and PV performance of B-MFI zeolite membrane.B-MFI zeolite membranes could permeate selectively organics from water with acetone and ethanol separation factors of 260 and 70 for 5%(w/w) acetone/water and 5%(w/w) ethanol/water binary feeds at 60 ℃,which were higher than those through a silicalite-1 membrane prepared under the same synthesis condition. |
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| Keywords: | boron-substituted zeolite MFI secondary growth pervaporation |
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