Effect of precursor loading on non-spherical TiO2 nanoparticle synthesis in a diffusion flame reactor
Effect of precursor loading on non-spherical TiO2 nanoparticle synthesis in a diffusion flame reactor
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扩散火焰反应器中前驱体负载量对非球形 TiO2 纳米颗粒合成的影响
DOI:
10.1016/j.ces.2007.11.008
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发表时间:
2008-05
影响因子:
4.7
通讯作者:
陈达良
中科院分区:
文献类型:
--
作者:
林建忠;于明州;陈达良
A numerical method of combining computational fluid dynamics with the particle kinetics theory is developed to study the effect of precursor loading on non-spherical TiO2nanoparticle synthesis in a diffusion flame reactor. A one-step chemical kinetics approach is employed to model precursor TiCl4oxidation that leads to particle formation. An efficient quadrature method of moments (QMOM) and the combustion model based on the eddy dissipation concept (EDC) together with k–ε turbulence model are used to approximate the particle kinetics evolution and the flame fields, respectively. Excellent agreements between the predicted and experimental data, with respect to the flame temperature distribution and particle kinetics, are obtained. For the final product of nanoparticles in the same flame field, the results show that the increasing of precursor loading leads to the larger agglomerated particles with larger size distribution. The primary particle number and size per agglomerate also increases with increasing the precursor loading, while the total specific surface area (SSA) decreases. The variation of inlet precursor loading has a negligible effect on the particle surface fractal dimension if only the variable of precursor loading is considered. As the inlet precursor loading is fixed, the increasing of carrying gas rate leads to the smaller agglomerated particles with increasing of total SSA and width of particle size distribution.
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影响因子:
4.5
作者:
S. Talukdar;M. Swihart
通讯作者:
S. Talukdar;M. Swihart
影响因子:
3.5
作者:
Mingzhou Yu;Jianzhong Lin;Lihua Chen;T. Chan
通讯作者:
Mingzhou Yu;Jianzhong Lin;Lihua Chen;T. Chan
影响因子:
5.2
作者:
S. Miller;S. Garrick
通讯作者:
S. Miller;S. Garrick
影响因子:
1.8
作者:
Shih‐Yuan Lu;Hway-Chi Lin;Chung-Hong Lin
通讯作者:
Shih‐Yuan Lu;Hway-Chi Lin;Chung-Hong Lin
影响因子:
5.2
作者:
C. Pfeifer;H. Hofbauer
通讯作者:
C. Pfeifer;H. Hofbauer