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

页码：91 / 93

页数：3

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