相转化凝固浴对Al2O3中空纤维多孔载体微观结构的影响

doi:10.3724/SP.J.1077.2014.13263

无机材料学报 ›› 2014, Vol. 29 ›› Issue (2): 143-148.DOI: 10.3724/SP.J.1077.2014.13263 CSTR: 32189.14.SP.J.1077.2014.13263

相转化凝固浴对Al₂O₃中空纤维多孔载体微观结构的影响

陈园园, 时振洲, 张春, 顾学红

(南京工业大学化学化工学院, 材料化学工程国家重点实验室, 南京210009)

收稿日期:2013-05-10 修回日期:2013-08-30 出版日期:2014-02-20 网络出版日期:2014-01-17
作者简介:陈园园(1987–), 女, 硕士研究生. E-mail:yuanyuanc_333@163.com
基金资助:
国家自然科学基金(21222602, 21176117); 江苏省杰出青年基金(BK2012040); 江苏省六大人才高峰项目; 江苏省高校自然科学研究重大项目(09KJA530002); 中国博士后科学基金(2012M521065)

Effect of Coagulation Bath in Phase Inversion on Microstructure of Hollow Fiber Porous Al₂O₃ Support

CHEN Yuan-Yuan, SHI Zhen-Zhou, ZHANG Chun, GU Xue-Hong

(State Key Laboratory of Materials Oriented Chemical Engineering, College of Chemistry and Chemical Engineering, Nanjing University of Technology, Nanjing 210009, China)

Received:2013-05-10 Revised:2013-08-30 Published:2014-02-20 Online:2014-01-17
About author:CHEN Yuan-Yuan. E-mail:yuanyuanc_333@163.com
Supported by:
National Natural Science Foundation of China (21222602, 21176117); Outstanding Young Fund of Jiangsu Province (BK2012040); “Six Top Talents” of Jiangsu Province; Natural Science Foundation of the Jiangsu Higher Education Institutions?(09KJA530002);?General Financial Grant from the China Postdoctoral Science Foundation (2012M521065)

摘要/Abstract

摘要： 采用相转化法制备出具有非对称结构的Al₂O₃中空纤维多孔载体, 研究了不同浓度乙醇/水溶液为内、外凝固浴条件下中空纤维载体的微观结构和性能的变化。研究结果显示, 采用水为内凝固浴, 随着外凝固浴中乙醇含量的提高, 所制备的载体内层指状孔逐渐向外延伸且孔道变大, 其三点弯曲强度呈现先增大再减小的趋势, 纯水通量及N₂渗透性先减小再增大; 内凝固浴对中空纤维多孔载体的结构也会产生一定的影响。以无水乙醇作为内凝固浴、水为外凝固浴所制备的Al₂O₃中空纤维载体, 其内层为海绵层, 外层为指状孔, 其N₂渗透性约为6.85×10^-5 mol/(s·m²·Pa), 纯水通量约为4.5 m³/(m²·h)。

关键词: Al₂O₃载体, 中空纤维, 凝固浴, 微观结构

Abstract: Al₂O₃ hollow fiber porous supports with asymmetric structures were prepared by phase inversion method. The effects of ethanol/water solution with different contents as internal and external coagulation baths on the microstructure and performance of as-synthesized hollow fiber supports were investigated. The results indicated that the finger-like voids on inner side of support extended outwards and the pore size increased as well with the increasing of ethanol content in external coagulation bath when using water as internal coagulation bath. The three-point bending strength of the support increased firstly and then decreased, meanwhile pure water flux and N₂ permeance decreased firstly and then increased. The internal coagulation also had an effect on the structure of hollow fiber porous supports. When using ethanol and water as internal and external coagulation baths, respectively, the as-synthesized hollow fiber supports possessed sponge-like layer on inner side and finger-like voids on outer side. The N₂ permeance and pure water flux were about 6.85×10^-5 mol/(s·m²·Pa) and 4.5 m³/(m²·h) for the hollow fiber supports.

Key words: Al₂O₃ support, hollow fiber, coagulation bath, microstructure

中图分类号:

TQ343

陈园园, 时振洲, 张春, 顾学红. 相转化凝固浴对Al₂O₃中空纤维多孔载体微观结构的影响[J]. 无机材料学报, 2014, 29(2): 143-148.

CHEN Yuan-Yuan, SHI Zhen-Zhou, ZHANG Chun, GU Xue-Hong. Effect of Coagulation Bath in Phase Inversion on Microstructure of Hollow Fiber Porous Al₂O₃ Support[J]. Journal of Inorganic Materials, 2014, 29(2): 143-148.

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相转化凝固浴对Al₂O₃中空纤维多孔载体微观结构的影响

Effect of Coagulation Bath in Phase Inversion on Microstructure of Hollow Fiber Porous Al₂O₃ Support

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