کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
53111 | 46911 | 2007 | 5 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Soot oxidation on a catalytic NOx trap: Beneficial effect of the Ba–K interaction on the sulfated Ba,K/CeO2 catalyst
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موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
کاتالیزور
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Soot oxidation on a catalytic NOx trap: Beneficial effect of the Ba–K interaction on the sulfated Ba,K/CeO2 catalyst Soot oxidation on a catalytic NOx trap: Beneficial effect of the Ba–K interaction on the sulfated Ba,K/CeO2 catalyst](/preview/png/53111.png)
چکیده انگلیسی
The Ba,K/CeO2 catalyst is active both for NOx trapping and soot combustion. In this work we report a Ba–K interaction that prevents K sulfation when NOx is present, thus preserving the activity of K towards soot combustion during the working period of the trap. This effect is originated in the K2SO4(s) + Ba(NO3)2(s) → 2KNO3(s) + BaSO4(s) reaction, which is thermodynamically favored. In the absence of NOx, the soot combustion reaction is strongly depressed by SO2 whereas when NOx is present both the sulfated and the non-sulfated catalysts present similar TPO patterns.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Catalysis Communications - Volume 8, Issue 5, May 2007, Pages 765–769
Journal: Catalysis Communications - Volume 8, Issue 5, May 2007, Pages 765–769
نویسندگان
V.G. Milt, M.A. Peralta, M.A. Ulla, E.E. Miró,