کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5352777 | 1503568 | 2017 | 10 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Novel Ce-W-Sb mixed oxide catalyst for selective catalytic reduction of NOx with NH3
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موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی تئوریک و عملی
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Novel Ce-W-Sb mixed oxide catalyst for selective catalytic reduction of NOx with NH3 Novel Ce-W-Sb mixed oxide catalyst for selective catalytic reduction of NOx with NH3](/preview/png/5352777.png)
چکیده انگلیسی
A novel Ce3W2SbOx catalyst prepared by the co-precipitation method have been investigated for the selective catalysis reduction (SCR) of NOx with NH3. It was found that the Ce-W-Sb oxide catalyst exhibited an excellent conversion ratio of NOx and a high tolerance to H2O and SO2 in a wide operation temperature window. The catalysts were characterized by N2-adsorption, XRD, Raman, H2-TPR, NH3-TPD, XPS and DRIFTS. The results suggest that the strong interaction between Sb, W and Ce species not only enhances the redox property of the catalyst but also increases the surface acidity, thus promoting the adsorption and activation of NH3 species, which is favorable for high NH3-SCR performance. Based on in situ DRIFTS results, it was concluded that the Langmuir-Hinshelwood (L-H) mechanism existed at the temperature of below 300 °C, while at above 300 °C the Eley-Rideal (E-R) mechanism dominate the NH3-SCR reaction over the Ce3W2SbOx catalyst. Overall, these findings indicate that Ce3W2SbOx is promising for industrial applications.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Applied Surface Science - Volume 401, 15 April 2017, Pages 7-16
Journal: Applied Surface Science - Volume 401, 15 April 2017, Pages 7-16
نویسندگان
Jun Liu, Guo-qiang Li, Yong-fa Zhang, Xiao-qing Liu, Ying Wang, Yuan Li,