Synthesis and Characterization of NaA Zeolite Membranes on the Inner Side of Hollow Fiber Support by a Dynamic Hydrothermal Process
MENG Fanpeng1,2,3, FAN Zhenkun3, WU Qiyang4, ZHANG Jian3, ZHANG Chao3, YANG Zanzhong4, ZHANG Yujun1,2
1 Key Laboratory for Liquid-Solid Structural Evolution & Processing of Materials of Ministry of Education, Shandong University, Jinan 250061; 2 Key Laboratory of Special Functional Aggregated Materials of Ministry of Education, Shandong University, Jinan 250061; 3 Shandong Guiyuan New Material Co., Ltd, Zibo 255086; 4 School of Materials Science and Engineering, Shandong University of Technology, Zibo 255049
Abstract: NaA zeolite membranes coated on the inner surface of hollow fiber support were synthesized directly in dynamic state by in-situ hydrothermal synthesis method. The phase, morphology and alcohol/water separation were characterized by X-ray diffraction (XRD), field emission scanning electron microscopy (FE-SEM) and pervaporization, respectively. The influences of the dynamic state hydrothermal condition on the quality of the as-synthesized membranes were investigated. The results show that NaA zeolite membranes fabricated in the dynamic state hydrothermal condition exhibit an excellent continuity, intersecting twin-crystal structure without obvious ecological gravity deposition crystal. The membranes thickness is about 4 μm. The improvement of rotation speed is beneficial to decrease the difference of temperature and concentration in both sides of carrier wall, and reduce crystallization time. In addition, the as-synthesized membrane exhibit 90% ethanol/water pervaporation performance and technology repeatability at 343 K. The permeation flux and the separation factor of the membranes are over 1.03 kg/(m2·h) and 3 781, respectively.
孟凡朋, 樊震坤, 吴奇阳, 张健, 张超, 杨赞中, 张玉军. 陶瓷中空纤维内表面动态水热合成NaA分子筛膜及其表征*[J]. 《材料导报》期刊社, 2017, 31(19): 168-172.
MENG Fanpeng, FAN Zhenkun, WU Qiyang, ZHANG Jian, ZHANG Chao, YANG Zanzhong, ZHANG Yujun. Synthesis and Characterization of NaA Zeolite Membranes on the Inner Side of Hollow Fiber Support by a Dynamic Hydrothermal Process. Materials Reports, 2017, 31(19): 168-172.
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2017, Vol. 31 
