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Preparation of NaAzeolite membranes on macroporoussupports by varying-temperature spraying seeding method
Authors： XUJing,LI Huazheng, YANG Jian-hua*,WANG Jinqu*,MENG Xiangdi, XU bo, YIN Dehong, LU Jinming, ZHANG Yan
Units： Institute of Adsorption and Inorganic Membrane, State Key Laboratory of Fine Chemicals, Dalian University of Technology, Dalian 116024 , China
KeyWords： spraying seeding method；zeoliteNaA membrane；macroporous support；pervaporation； dehydration of organic
ClassificationCode：TQ028.8
year,volume(issue):pagination： 2013, 33(6):20-24

Abstract：

 Spraying seeding technology was developed to prepare zeolite NaA membranes on the low-cost macroporous α-Al2O3 support. The supports were firstlydepositedby spraying the large (2 μm)NaA crystals at 448 K, and then the small (0.4 μm)NaAseeds were sprayed on the pre-treated supports toobtain a thin and continuous seeds layer. At last, the NaA zeolite membrane was fabricated by the seeded secondary growth at 353 K. The as-synthesized NaA zeolite membrane was characterized by SEM, XRD and pervaporation measurement. The results show that wellinter-grown zeolite NaA membranes were formed. The total flux of the zeolite NaAmembraneswas2.71 kg•m-2•h-1, and the separation factor was more than 2000 in dehydrating the 90wt.%ethanol/10 wt.%water solution at 348 K.

Funds：
自然科学基金(No.21076029)；新世纪优秀人才(NCET-10-0286)

AuthorIntro：
许静(1986-)，女，山东聊城人，硕士研究生，从事无机膜的制备及有机物脱水研究.*通讯联系人，E-mail：yjianhua@dlut.edu.cn (杨建华)；wjinqu@dlut.edu.cn (王金渠)

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