Computational fluid dynamic modeling of a flame reaction process for silica nanopowder synthesis from tetraethylorthosilicate

被引:22
作者
Ji, Yanhui
Sohn, Hong Yong [1 ]
Jang, Hee Dong
Bin Wan
Ring, Terry A.
机构
[1] Univ Utah, Dept Met Engn, Salt Lake City, UT 84112 USA
[2] Korea Inst Geosci & Mineral Resources, Nano Mat Grp, Taejon, South Korea
[3] Univ Utah, Dept Chem Engn, Salt Lake City, UT 84112 USA
关键词
D O I
10.1111/j.1551-2916.2007.02080.x
中图分类号
TQ174 [陶瓷工业]; TB3 [工程材料学];
学科分类号
0805 ; 080502 ;
摘要
The process of synthesizing silica nanopowder by the gas phase thermal oxidation of tetraethylorthosilicate in a diffusion flame reactor was simulated using a commercial computational fluid dynamic code. The fuel combustion process and silica particle formation and growth in the flame were modeled. The temperature, velocity, and particle size distribution (PSD) fields inside the reactor were computed. Chemical reaction rate and a population balance model were used to calculate the particle formation and growth and PSD. Satisfactory results were obtained for the temperature profile and PSD. Computed values of the average size of the final products were consistent with those obtained in a previous experimental work.
引用
收藏
页码:3838 / 3845
页数:8
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