کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
58825 | 47173 | 2006 | 6 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Dynamics of SO2 adsorption–oxidation in SOx traps for the protection of NOx adsorbers in diesel engine emissions
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
کاتالیزور
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
The SO2 uptake behaviour at different temperature and SO2 concentration of a reference SOx trap is studied in a thermobalance apparatus and in a flow reactor under reaction conditions close to those in the emissions from a diesel engine. The data of the latter apparatus are also kinetically modelled to derive which controlling regime dominates the performances. The results evidence that at 200 °C the behaviour is largely controlled by the slow solid-state diffusion of the sulphate species, while above 300 °C there is an initial region controlled by the surface reaction, although for levels of SO2 uptake above a weight increase of 4–5% (due to sulphation) the solid-state diffusion dominates the performances also at high temperature.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Catalysis Today - Volume 112, Issues 1–4, 15 March 2006, Pages 174–179
Journal: Catalysis Today - Volume 112, Issues 1–4, 15 March 2006, Pages 174–179
نویسندگان
Gabriele Centi, Siglinda Perathoner,