Synthesis of large-mesoporous γ-Al2O3 from coal-series kaolin at room temperature

被引：25
|
作者：
Pan, Feng [1 ,2 ]
Lu, Xuchen [1 ,3 ]
Wang, Tizhuang [1 ]
Wang, Yun [1 ,2 ]
Zhang, Zhimin [1 ,2 ]
Yan, Yan [1 ]
Yang, Suping [1 ,2 ]
机构：
[1] Chinese Acad Sci, Inst Proc Engn, State Key Lab Multiphase Complex Syst, Beijing 100190, Peoples R China
[2] Chinese Acad Sci, Grad Sch, Beijing 100039, Peoples R China
[3] United Res Ctr Resource & Mat, Wuhai 016000, Peoples R China
来源：
MATERIALS LETTERS | 2013年 / 91卷
关键词：
Porous materials; Oxidation; CTAB; Large-mesoporous gamma-Al3O3; Kaolin; Room temperature; LARGE SURFACE-AREA; GAMMA-ALUMINA; FACILE SYNTHESIS; NANOSTRUCTURES; HYDROLYSIS;
D O I：
10.1016/j.matlet.2012.09.052
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Large-mesoporous Al2O3 has been successfully synthesized from calcined coal-series kaolin by using cetyltrimethylammonium bromide(CTAB) as template at room temperature. After calcined at 700 degrees C, the as-synthesized samples have transformed to mesoporous gamma-Al2O3. The mesoporous gamma-Al2O3 has a specific area of 253.4 m(2) g(-1), large pore volume of 1.487 cm(3) g(-1), and an average pore diameter of 12.9 nm. TEM images show that the calcined mesoporous alumina has wormhole-like pores without long-range ordered framework. A probable formation mechanism of large-mesoporous gamma-Al2O3 is also proposed. (C) 2012 Elsevier B.V. All rights reserved.
引用
收藏
页码：136 / 138
页数：3
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