Mechanism and Kinetics of Zinc Oxidation by Sub- and Supercritical Water

被引：0
|
作者：
Vostrikov, A. A. [1 ]
Fedyaeva, O. N. [1 ]
Shishkin, A. V. [1 ]
Sokol, M. Ya. [1 ]
机构：
[1] RAS, Kutateladze Inst Thermophys SB, Novosibirsk, Russia
来源：
IFOST 2008: PROCEEDING OF THE THIRD INTERNATIONAL FORUM ON STRATEGIC TECHNOLOGIES | 2008年
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D O I：
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中图分类号：
TP [自动化技术、计算机技术];
学科分类号：
0812 ;
摘要：
Bulk solid (Zn)(s) and liquid zinc (Zn)L samples are oxidized by water with the formation of nanodimensional ZnO. The rate of this process, called chemical recondensation (CR) by water, increases with temperature and water density rise. The CR process begins with the formation of (ZnO)(n) clusters via the reaction (Zn)(S,L) + nH(2)O = [(Zn)(S,L)center dot(ZnO)(n)] + nH(2), followed by their growth at n > 4. The CR of solid Zn leads predominantly to the formation of nanowires and nanorods, while the CR of liquid Zn practically always proceeds with the formation of nanoparticles. The complete CR of solid Zn cylinders results in the formation of highly porous nanostructural ceramics.
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页码：226 / 230
页数：5
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