The Effect of CTAB on the Citrate Sol-gel Process for the Synthesis of Sodium Beta-Alumina Nano-Powders

被引：13
作者：
Wang, Zaihua [1 ,2 ]
Li, Xinjun [1 ]
Feng, Ziping [1 ]
机构：
[1] Chinese Acad Sci, Key Lab Renewable Energy & Gas Hydrate, Inst Energy Convers, Guangzhou 510640, Peoples R China
[2] Chinese Acad Sci, Grad Univ, Beijing 100049, Peoples R China
来源：
BULLETIN OF THE KOREAN CHEMICAL SOCIETY | 2011年 / 32卷 / 04期
关键词：
Sodium beta-alumina; Surfactant; Sol-gel; Nano-powders;
D O I：
10.5012/bkcs.2011.32.4.1310
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
Sodium beta-alumina (SBA) nano-powders were synthesized by the citrate sol-gel process, and the effects of the cationic surfactant n-cetyltrimethylammonium bromide surfactant (CTAB) were investigated. The structure and morphology of the nano-powders were characterized by X-ray diffraction (XRD) and transmission electron microscope (TEM) techniques, respectively. The effects of CTAB on the citrate sol-gel process and the SBA formation were investigated by thermo gravimetric/differential thermal analysis (TG/DTA) and Fourier transform infrared spectroscopy (FTIR). The conductivity of ceramic pellets of SBA was measured by electrochemical impedance spectroscopy (EIS). The results showed that the CTAB inhibited the agglomeration of SBA powders effectively and consequently decreased the crystallization temperature of SBA, about 150 degrees C lower than that of the sample without CTAB. The measured conductivity of SBA was 1.21 x 10(-2) S.cm(-1) at 300 degrees C.
引用
收藏
页码：1310 / 1314
页数：5
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