Fabrication of Highly Oriented ZSM-5 Membranes for CO2/H2 Separation

被引：0
|
作者：
Liu, Yang [1 ]
Wang, Lin [2 ]
Liu, Li [1 ]
Wang, Zheng [1 ]
Zhang, Yu [1 ]
Liu, Yan [1 ]
Shao, Xiuli [1 ]
Jiang, Nanzhe [3 ]
Jin, Zhengwei [2 ]
Jiao, Hongqiao [2 ]
机构：
[1] State Key Laboratory of High-Efficiency Utilization of Coal and Green Chemical Engineering, Institute of Chemistry and Chemical Engineering, Ningxia University, Yinchuan,750021, China
[2] Ningxia Coal Industry Co. Ltd., China Energy Group, Yinchuan,750411, China
[3] College of Science, Yanbian University, Yanji,133002, China
来源：
Shiyou Xuebao, Shiyou Jiagong/Acta Petrolei Sinica (Petroleum Processing Section) | 2020年 / 36卷 / 02期
关键词：
Firstly; highly compact and b-oriented Silicalite-1 seeds layer was well organized on the porous α-Al2O3 substrate via the Langmuir-Blodgett (LB) technique. Then; a continuous and defect free ZSM-5 membrane was synthesized using dimer-TPABr as structure direct agent to promote the b-oriented growth rate during the secondary growth procedure. According to the results of scanning electron microscopy (SEM) and X-ray diffraction (XRD); the thickness of prepared ZSM-5 zeolite membranes is about 2 μm after crystallization at 175 ℃ for 48 h and the crystallographic preferred orientation (CPO) index is 0.862; which indicate that the prepared ZSM-5 membrane is highly b-oriented. The resulting membrane demonstrates reasonable CO2/H2 gas separation performance with a CO2 permeance of 5.96×10-7 mol/(m2•s•Pa) and the CO2/H2 gas separation factor of 7.37 under the osmotic pressure of 0.3 MPa at 25 ℃. Therefore; this research confirms that the LB technique can be used for preparation of highly oriented zeolite membrane on porous substrate for gas separation. © 2020; Editorial Office of Acta Petrolei Sinica(Petroleum Processing Section). All right reserved;
D O I：
10.3969/j.issn.1001-8719.2020.02.010
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页码：301 / 307
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