Journal of Inorganic Materials ›› 2018, Vol. 33 ›› Issue (3): 345-351.DOI: 10.15541/jim20170205

• Orginal Article • Previous Articles     Next Articles

Preparation and Characterization of High Performance MFI Zeolite Membrane in Ultradilute Solution

HUANG Pan1, ZHOU Liang1, LI Hua-Zheng1, LI Hong-Jian1, YANG Jian-hua2, WANG Jin-Qu1, 2   

  1. 1. School of Petroleum and Chemical Engineering, State Key Laboratory of Fine Chemicals, Dalian University of Technology, Panjin Campus, Panjin 124221, China;
    2. Institute of Adsorption and Inorganic Membrane, State Key Laboratory of Fine Chemicals, Dalian University of Technology, Dalian 116024, China
  • Received:2017-04-28 Revised:2017-06-08 Published:2018-03-20 Online:2018-03-12
  • About author:HUANG Pan. E-mail:
  • Supported by:
    National High Technology Research and Development Program of China (2015AA03A602)


High performance MFI-type zeolite membrane was successfully prepared in ultradilute solution (H2O/SiO2= 1000) on inexpensive and macroporous α-Al2O3 tubular support by secondary growth. Influences of seed size and H2O/SiO2 on morphology and pervaporation performance of the zeolite membranes were investigated. Results showed that the seed layer prepared with 0.4 μm seeds had higher crystal nucleus density which could increase the amount of the nucleation site on the support surface, resulting in a stronger induced effect on the growth of zeolite membrane. The low-concentration template and silicon source in ultradilute solution decreased the growth rate of zeolite crystals, which could reduce the zeolite membrane thickness and effectively inhibited the formation of intercrystalline defects. The flux and separation factor (αethanol/water) of the resulting MFI zeolite membrane achieved 4.09 kg/(m2·h1) and 47, respectively, for separation of 5wt% ethanol/water mixture at 60℃. Ultradilute solution and low-cost macroporous α-Al2O3 tubular support reduced the preparation cost of MFI zeolite membranes and increased the flux, showing prospect of the potential industrial application of MFI-type zeolite membrane for removal of the low-concentration organic compounds in water.


Key words: MFI zeolite membrane, macroporous α-Al2O3 tubular support;, ultradilute solution, pervaporation

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