Submicron γ-LiAlO2 Powder Synthesized from Boehmite

Chinese Journal of Chemical Engineering ›› 2012, Vol. 20 ›› Issue (4): 776-783.

Submicron γ-LiAlO₂ Powder Synthesized from Boehmite

程健^1,2, 郭烈锦¹, 许世森², 张瑞云², 李晨²

1. School of Energy and Power Engineering, Xi'an Jiaotong University, Xi'an 710049, China;
2. Huaneng Clean Energy Technology Institute, Beijing 100086, China

收稿日期:2011-07-26 修回日期:2012-03-15 出版日期:2012-08-28 发布日期:2012-09-15
通讯作者: CHENG Jian, E-mail:chengjian@hnceri.com
基金资助:
Supported by the Green Gen plan Program of China Huaneng Group (HNKJ06-H01)

Submicron γ-LiAlO₂ Powder Synthesized from Boehmite

CHENG Jian^1,2, GUO Liejin¹, XU Shisen², ZHANG Ruiyun², LI Chen²

1. School of Energy and Power Engineering, Xi'an Jiaotong University, Xi'an 710049, China;
2. Huaneng Clean Energy Technology Institute, Beijing 100086, China

Received:2011-07-26 Revised:2012-03-15 Online:2012-08-28 Published:2012-09-15
Supported by:
Supported by the Green Gen plan Program of China Huaneng Group (HNKJ06-H01)

摘要/Abstract

摘要： The present study reports a simple,effective and energy-efficient method to prepare γ-LiAlO₂ powder as a matrix in a molten carbonate fuel cell(MCFC).In our experiments,aqueous solution based sol-gel technique was used to synthesize γ-LiAlO₂.Highly dispersed AlOOH·nH₂O and LiOH·H₂O aqueous solutions were mixed to form a colloid mixture,which was calcined to synthesize γ-LiAlO₂.Thermogravimetric analysis(TGA),X-ray diffraction(XRD),and scanning electron microscopy(SEM) were used to study the composition and morphology of the intermediate and final products.The analysis results showed that an intermediate product Li₂Al₄CO₃(OH)₁₂ was produced after the colloid mixture was dried at 80℃,and highly purified γ-LiAlO₂ powder with fine particle size was resulted from the subsequent calcinations.A single MCFC was assembled with a matrix of the γ-LiAlO₂ powder.The testing results showed that the matrix performed well in preventing gas leakage.

关键词: boehmite, synthesis, submicron γ-LiAlO₂, molten carbonate fuel cell

Abstract: The present study reports a simple,effective and energy-efficient method to prepare γ-LiAlO₂ powder as a matrix in a molten carbonate fuel cell(MCFC).In our experiments,aqueous solution based sol-gel technique was used to synthesize γ-LiAlO₂.Highly dispersed AlOOH·nH₂O and LiOH·H₂O aqueous solutions were mixed to form a colloid mixture,which was calcined to synthesize γ-LiAlO₂.Thermogravimetric analysis(TGA),X-ray diffraction(XRD),and scanning electron microscopy(SEM) were used to study the composition and morphology of the intermediate and final products.The analysis results showed that an intermediate product Li₂Al₄CO₃(OH)₁₂ was produced after the colloid mixture was dried at 80℃,and highly purified γ-LiAlO₂ powder with fine particle size was resulted from the subsequent calcinations.A single MCFC was assembled with a matrix of the γ-LiAlO₂ powder.The testing results showed that the matrix performed well in preventing gas leakage.

Key words: boehmite, synthesis, submicron γ-LiAlO₂, molten carbonate fuel cell

程健, 郭烈锦, 许世森, 张瑞云, 李晨. Submicron γ-LiAlO₂ Powder Synthesized from Boehmite[J]. Chinese Journal of Chemical Engineering, 2012, 20(4): 776-783.

CHENG Jian, GUO Liejin, XU Shisen, ZHANG Ruiyun, LI Chen. Submicron γ-LiAlO₂ Powder Synthesized from Boehmite[J]. Chin.J.Chem.Eng., 2012, 20(4): 776-783.

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Submicron γ-LiAlO₂ Powder Synthesized from Boehmite

Submicron γ-LiAlO₂ Powder Synthesized from Boehmite

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