کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
9609781 | 46537 | 2005 | 10 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Characterisation and reactivity of vanadia-titania supported SBA-15 in the SCR of NO with ammonia
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
کاتالیزور
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
TiOx, VOx and TiOx-VOx oxides were highly dispersed at different metal loadings on the mesoporous silica SBA-15 by the molecular designed dispersion (MDD) method. A combination of different techniques (N2-sorption, FT-Raman, TPR, UV-vis-DR) was used to verify the nature of the vanadia and/or titania species on the surface of the mesoporous support. Temperature-programmed desorption (NH3-TPD) was applied to characterise the surface acidity of these catalysts. Vanadia and titania were found to be present as isolated species, even at high metal oxide concentrations. The supported catalysts were tested in the selective catalytic reduction (SCR) of NO with ammonia. Among the studied samples, the highest activity was found for TiOx-VOx mixed oxides on SBA-15. The catalytic activity results were discussed in terms of loading and metal dispersion on the support material.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Applied Catalysis B: Environmental - Volume 61, Issues 1â2, 27 October 2005, Pages 69-78
Journal: Applied Catalysis B: Environmental - Volume 61, Issues 1â2, 27 October 2005, Pages 69-78
نویسندگان
Yolanda Segura, Lucjan Chmielarz, Piotr Kustrowski, Pegie Cool, Roman Dziembaj, Etienne F. Vansant,