Synthesis and property of mesoporous tantalum oxides

被引：22
作者：
Kondo, JN
Takahara, Y
Lee, B
Lu, DL
Domen, K
机构：
[1] Tokyo Inst Technol, Chem Resources Lab, Midori Ku, Yokohama, Kanagawa 2268503, Japan
[2] JST, CREST, Tokyo, Japan
来源：
TOPICS IN CATALYSIS | 2002年 / 19卷 / 02期
关键词：
mesoporous material; tantalum oxide; niobium oxide; hydrophobicity; crystallization;
D O I：
10.1023/A:1015255906229
中图分类号：
O69 [应用化学];
学科分类号：
081704 ;
摘要：
Some mesoporous Ta2O5 were synthesized and characterized by N-2 adsorption isotherms, TEM and XRD. Although the one prepared by the ligand-assisted templating (LAT) method was neither thermally nor mechanically stable, its hydrophobicity was found to be utilized for efficient intercalation of large dye molecules from aqueous solution. On the other hand, the thick wall of the mesoporous Ta2O5 synthesized by neutral surfactant templating (NST) method partly maintained mesopores even after calcination at crystallization temperature (1023 K). By the mixing of Ta and Nb sources (1: 1), homogeneous (Nb, Ta)(2)O-5 was prepared. The amorphous thick wall of as-prepared mesoporous (Nb, Ta)(2)O-5 was crystallized by calcination at 923 K, while maintaining the mesopores in single crystal particles.
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收藏
页码：171 / 177
页数：7
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