文献类型：期刊文献

中文题名：添加剂对γ-Al_2O_3陶瓷膜微孔结构的影响

英文题名：EFFECTS OF ADDITIVES ON PORE-STRUCTURE OF γ-Al_2O_3 CERAMIC MEMBRANE

作者：朱超峰[1];杜永娟[1];姜建华[1];杨云霞[1];陈国荣[1]

机构：[1]华东理工大学无机材料系,上海200237

年份：2005

卷号：33

期号：7

起止页码：822

中文期刊名：硅酸盐学报

外文期刊名：Journal of The Chinese Ceramic Society

收录：CSTPCD;;EI(收录号：2005349312222);Scopus;北大核心:【北大核心2004】；CSCD:【CSCD2011_2012】；

语种：中文

中文关键词：氧化铝陶瓷膜;添加剂;溶胶-凝胶法

外文关键词：Additives;Alumina;Heat treatment;Membranes;Microporous materials;Pore size;Sol;gels;Thermodynamic stability

摘要：以化学纯异丙醇铝为原料,采用溶胶凝胶法制备了γAl2O3陶瓷膜。研究了曲拉通(C34H62O11)、N,N二甲基甲酰胺、硝酸镧等添加剂对γAl2O3陶瓷膜的微孔结构的影响,利用比表面积分析对陶瓷膜的性能进行了表征。结果表明:在γAl2O3陶瓷膜制备过程中,添加有机添加剂后,所制备的陶瓷膜的孔径、比表面积均变大。陶瓷膜经过高温热处理后,孔径急剧增大。在陶瓷膜的制备过程中引入硝酸镧,可以有效地抑制孔径的增大。化学添加剂可以起到改变陶瓷膜孔形状的作用。
γ-Al2O3 ceramic membranes were prepared by a sol-gel method using Al(OPri)3 as starting materials. Effects of some additives, such as octylphenol-polyethylene glycol ether (Triton, C34H62O11), N, N-dimethylformamide [DMF, (CH3)2NCOH], La(NO3)3, on the pore-structure of γ-Al2O3 ceramic membrane were studied, and properties of the ceramic membranes were characterized by Brunauer-Emmett-Teller method (BET). The results show that the pore diameter and surface area of ceramic membrane are increased when some organic additives are introduced during the preparing process. The pore diameters of ceramic membrane increase sharply after heat treatment at high temperatures, whereas, this trend is restrained effectively through introducing La(NO3)3. Additionally, the additives have the function of changing the pore shapes of the ceramic membrane.