کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
240794 1427929 2007 10 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
A comparative study of nanoparticles in premixed flames by scanning mobility particle sizer, small angle neutron scattering, and transmission electron microscopy
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی مهندسی شیمی (عمومی)
پیش نمایش صفحه اول مقاله
A comparative study of nanoparticles in premixed flames by scanning mobility particle sizer, small angle neutron scattering, and transmission electron microscopy
چکیده انگلیسی

Scanning mobility particle sizer (SMPS) and transmission electron microscopy (TEM) studies were conducted for TiO2 and soot particles. The TiO2 particles were produced from a premixed stagnation ethylene–oxygen–argon flame (ϕ = 0.36) doped with titanium tetraisopropoxide. Soot was generated from a burner-stabilized premixed ethylene–oxygen–argon flame (ϕ = 2.5). The close agreement among SMPS, TEM, and X-ray diffraction results for TiO2 nanoparticles demonstrates that the probe sampling/mobility measurement technique is accurate for on-line analysis of the size distribution of particles as small as 3 nm in diameter. In the case of soot, notable disagreement between the SMPS and TEM sizes was found and attributable to the fact that the soot taken from the flame studied herein is liquid-like and that upon deposition on the TEM grid, the primary particles do not retain their sphericity. This interpretation is supported by measurements with photo ionization aerosol mass spectrometry, small angle neutron scattering, and thermocouple particle densitometry.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Proceedings of the Combustion Institute - Volume 31, Issue 1, January 2007, Pages 851–860
نویسندگان
, , ,