A template-free synthesis of mesoporous crystalline γ-alumina through partial hydrolysis of aluminum nitrate aqueous solution

被引：6
|
作者：
Shang, Xingfu [1 ]
Wang, Xueguang [1 ]
Nie, Wangxin [1 ]
Guo, Xuefeng [2 ]
Zou, Xiujing [1 ]
Ding, Weizhong [1 ]
Lu, Xionggang [1 ]
机构：
[1] Shanghai Univ, Key Lab Modern Met & Mat Proc, Shanghai 200072, Peoples R China
[2] Nanjing Univ, Sch Chem & Chem Engn, Key Lab Mesoscop Chem, Nanjing 210093, Jiangsu, Peoples R China
来源：
MATERIALS LETTERS | 2012年 / 83卷
基金：
国家高技术研究发展计划(863计划); 高等学校博士学科点专项科研基金;
关键词：
Sol-gel preparation; Mesoporous alumina; Porous materials; Keggin-Al-13; Partial hydrolysis; PRECIPITATION; AL-13;
D O I：
10.1016/j.matlet.2012.05.109
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The synthesis of mesoporous alumina with large surface area and crystalline nature is still a great challenge because of the susceptibility to hydrolysis of aluminum precursors. Here, we first report a preparation of NH4NO3 and Al species hybrids containing Keggin-Al-13 [Al13O4(OH)(24)(H2O)(12)(7+)] through a simple condensation of Al(NO3)(3) aqueous solution partially hydrolyzed with (NH4)(2)CO3. Thermal treatment at a low temperature of 200 degrees C could successfully transform the hybrid to gamma-alumina, which exhibited a wormhole-like mesoporous structure with high surface area of 380-450 m(2)/g and narrow PSD after completely removing NH4NO3 at 300 degrees C. (C) 2012 Elsevier B.V. All rights reserved.
引用
收藏
页码：91 / 93
页数：3
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