Nanocatalysis: Selective conversion of ethanol to acetaldehyde using mono-atomically dispersed copper on silica nanospheres

被引:46
作者
Gole, JL [1 ]
White, MG
机构
[1] Georgia Inst Technol, Sch Phys, Atlanta, GA 30332 USA
[2] Georgia Inst Technol, Sch Chem Engn, Atlanta, GA 30332 USA
关键词
D O I
10.1006/jcat.2001.3335
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
Silica nanospheres, d similar to 30 run, are prepared at elevated temperature from an Si/SiO2 mixture. Under ambient conditions, the high population of surface hydroxyl on these nanospheres, confirmed by FTIR spectroscopy, is probed by decorating the surfaces of the spheres with the metal complex copper (II) acetylacetonate: Cu(acac)(2). This metal complex, known to be anchored by the surface SiOH species, is converted into the active catalyst by thermolysis of the ligands. The resulting monatomic copper distribution forms a selective catalyst whose conversion efficiency appears to be at least comparable to if not better than CuO/fumed silica. In contrast to the fumed silica, the preparation of this catalyst support is environmentally benign. (C) 2001 Academic Press.
引用
收藏
页码:249 / 252
页数:4
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