Particle and Aerosol Research Vol. 4, No. 2, December 2008 |
ISSN : 1738-8716 (Print) ISSN : 2287-8130 (Online) |
Catalytic oxidation kinetics of iron-containing carbon particles generated from diesel-sprayed hydrogen-air diffusion flame
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Abstracts
In this study, we devoted to kinetic measurement of the catalytic oxidation of iron-containing flame soot particles
and better understanding the role of catalytic particles on carbon oxidation in particular at low temperature, targeting
on autothermal regeneration of diesel particulate filter by diesel exhaust gas. Carbon-based Fe-containing particles
generated by spraying ferrocene-doped diesel fuel in an oxy-hydrogen flame are tested and compared with a
commercial carbon black powder for thermogravimetric analysis (TGA), secondary ion mass spectrometry (SIMS),
Fourier-transform infrared spectroscopy (FTIR), Induced coupled plasma-Atomic emission spectroscopy (ICPAES),
and High-resolution transmission electron microscopy (HR-TEM). As a result, we found that a small amount
of the ferrocene addition led to significant reductions in a on-set temperature and an activation energy of the carbon
oxidation as well. An oxygenated surface complex forming at the particle surface could be thought as active species
that would be readily consumed in particular at low temperature.
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