کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
9609790 | 46537 | 2005 | 9 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Kinetic analysis of non-catalytic and Mn-catalysed combustion of diesel soot surrogates
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
کاتالیزور
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
The kinetics of the combustion process of two carbon blacks, selected as diesel soot surrogates, namely, Flammruss 101 and Printex XE-2B, was investigated by dynamic thermogravimetry in an excess of air. The kinetic parameters (activation energy and pre-exponential factor) were accurately calculated by different processing methods, such as Kissinger-Akahira-Sunose isoconversional method and Coats-Redfern model-fitting method. Manganese (as manganese oxide) added to diesel soot surrogates, strongly decreased the ignition temperatures by 150-200 °C. The activation energy of the catalytic process was lowered by about 15 and 10 kJ molâ1 for Flammruss 101 and Printex XE-2B sample, respectively, with respect to the non-catalytic oxidation. The effectiveness of carbon-catalyst contact appeared to strongly affect the catalytic performance. Thermal experiments confirmed that, on one hand, impregnation markedly increased the reactivity in comparison with a simple physical mixture, and on the other hand, a highly porous structure of the parent carbon material enhanced the catalytic role of the active phase.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Applied Catalysis B: Environmental - Volume 61, Issues 1â2, 27 October 2005, Pages 150-158
Journal: Applied Catalysis B: Environmental - Volume 61, Issues 1â2, 27 October 2005, Pages 150-158
نویسندگان
R. López-Fonseca, U. Elizundia, I. Landa, M.A. Gutiérrez-Ortiz, J.R. González-Velasco,