کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
10261093 | 456576 | 2005 | 10 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Experimental investigation and particle dynamic simulation for synthesizing titania nanoparticles using diffusion flame
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
مهندسی شیمی (عمومی)
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چکیده انگلیسی
Using titanium tetrachloride (TiCl4) as a precursor, titania (TiO2) nanoparticles were synthesized in the diffusion flame (DF) of air and liquid petrol gas (LPG). The effects of air and LPG flow rates and flow ratio, flame temperature and flame shape on the synthesized titania nanoparticles were investigated. Experimental investigation showed that the mean particle size of TiO2 increased obviously with increasing airflow rate, and not obviously with that of LPG, the mean particle size at optimal experimental condition was less than 20Â nm, the rutile fraction in the synthesized powder increased with increasing flame temperature and the particle size was affected by the flame height. A particle-dynamic model, describing the nucleation and coagulation of titania monomers/nanoparticles, was used to account for the experimental results based on the isothermal assumption. Generally speaking, the calculated particle sizes from the particle dynamics were consist with the experimental measurements, especially, when the feed concentration of TiCl4 was low.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Chemical Engineering Journal - Volume 108, Issue 3, 15 April 2005, Pages 203-212
Journal: Chemical Engineering Journal - Volume 108, Issue 3, 15 April 2005, Pages 203-212
نویسندگان
Ruoyu Hong, Zhiqiang Ren, Jianmin Ding, Hongzhong Li,