高等学校化学学报

高等学校化学学报 ›› 2006, Vol. 27 ›› Issue (4): 599.

• 研究简报 • 上一篇    下一篇

Y2O3/ZrO2中空纤维陶瓷膜的制备与表征

孟秀霞1, 杨乃涛2, 孟波1, 谭小耀1   

  1. 1. 山东理工大学化学工程学院, 淄博 255049; 2. 上海交通大学化学化工学院, 上海 200240
  • 收稿日期:2005-08-01 出版日期:2006-04-10 发布日期:2009-04-10
  • 通讯作者: 孟秀霞(1974年出生)， 女， 硕士， 讲师， 主要从事无机膜技术研究. E-mail: mengxiux@126.com
  • 基金资助:

    国家自然科学基金(批准号： 20076025)和山东省自然科学基金(批准号： 2003ZX09)资助.

Preparation and Characterization of Y2O3/ZrO2 (YSZ) Hollow Fibre Membranes

MENG Xiu-Xia1*, YANG Nai-Tao 2, MENG Bo1, TAN Xiao-Yao1   

  1. 1. School of Chemical Engineering, Shandong University of Technology, Zibo 255049, China;
    2. School of Chemistry ＆ Chemical Technology, Shanghai Jiaotong University, Shanghai 200240, China
  • Received:2005-08-01 Online:2006-04-10 Published:2009-04-10
  • Contact: MENG Xiu-Xia, E-mail: mengxiux@126.com

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摘要：

本文结合相转化技术和干湿法纺丝工艺制备了以YSZ(以摩尔分数为8%的Y2O3稳定的ZrO2)为原料的中空纤维陶瓷膜, 考察了YSZ粉体的粒度分布和形貌, 并研究了YSZ中空纤维陶瓷膜的气密性、 孔特性、 机械性能、 微观结构及晶型变化等.

关键词: 氧化钇稳定的氧化锆(YSZ); 中空纤维; 无机膜; 非对称膜

Abstract:

Fluorite-type Y2O3/ZrO2(YSZ) powders with the mean particle size of 1.74 μm were synthesized by the citric acid combustion method. Using the prepared YSZ powders, gastight hollow fibre membranes were fabricated by a dry-wet spinning process based on the phase inversion technique, followed by sintering at 1 400 ℃ for 4 h. The gas tightness, porosity, mechanical strength, microstructure and crystalline phase of the hollow fibre membranes were studied. The results indicate that the prepared YSZ hollow fibre membranes are gastight while the porosity remains around 23.04% and the bending strength may be up to 322 MPa. The diameter of the pores in the hollow fibres ranges from 60 to 500 nm. XRD spectra show that the fluoritetype phase is kept unchanged, but the crystal size grows bigger after sintering. SEM micrographs show that the prepared YSZ hollow fibre membranes possess an asymmetric structure that includes a dense layer and porous layers, while the inner and outer surfaces are also dense.

Key words: Y2O3stabilized ZrO2(YSZ); Hollow fibre; Inorganic membrane; Asymmetric membrane

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