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Membrane Water Treatment   Volume 10, Number 5, September 2019, pages 353-360
DOI: https://doi.org/10.12989/mwt.2019.10.5.353
 
Organotemplate-free synthesis of ZSM-5 membrane for pervaporation dehydration of isopropanol
Jiajia Li, Liangqing Li, Jianhua Yang, Jinming Lu and Jinqu Wang

 
Abstract     [Buy Article]
    ZSM-5 membrane was prepared on tubular macroporous alpha-alumina support using a different synthesis route. The effects of organic template agent and Si/Al ratio of the synthesis gel on morphology, structure, and separation performance of the ZSM-5 membrane used for dehydration of isopropanol were investigated. High water perm-selectivity ZSM-5 membrane with a thickness of about 3.0 um and a low Si/Al ratio of 10.1 was successfully prepared from organotemplate-free synthesis gel with a molar composition of SiO2 : 0.050Al2O3 : 0.21Na2O : NaF : 51.6H2O at 175 degree Celcius for 24 h. The ZSM-5 membrane exhibited high pervaporation performance with a flux of 3.92 kg/(m2.h) and corresponding separation factor of higher than 10,000 for dehydration of 90 wt.% isopropanol/water mixture at 75 degree Celcius.
 
Key Words
    Zeolite membrane; dehydration of isopropanol; pervaporation; organotemplate-free synthesis gel; hydrothermal synthesis
 
Address
Jiajia Li, Liangqing Li: Collaborative Innovation Center of Fine Chemical and Materials Technology, School of Chemistry and Chemical Engineering,
Huangshan University, No. 39 Xihai Road, Huangshan, China
Jianhua Yang, Jinming Lu and Jinqu Wang: Institute of Adsorption and Inorganic Membrane, State Key Laboratory of Fine Chemicals, Dalian University of Technology,
No. 2 Linggong Road, Dalian, China
 

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