Abstract
The Sb-CeO2/TiO2 (SCT) catalytic system with different vanadia loading (0-3 % w/w) was systematically investigated for removal of NO by NH3. A series of catalysts prepared by impregnation and deposition precipitation methods were thoroughly characterized physically, by BET surface area, X-ray diffraction (XRD), and X-ray photoelectron spectroscopy (XPS), and chemically, by temperature-programmed desorption (NH3 and SO2-TPD), temperature programmed reduction (H2-TPR), and in-situ DRIFT study. NH3-TPD and H2-TPR results for 2 and 3 % vanadia-loaded Sb-CeO2/TiO2 catalysts revealed high total acidity and reducibility. As a result, both catalysts had high activity at low temperatures. At 240 °C for 20 h the 2 % vanadia-loaded Sb-CeO2/TiO2 catalyst was more resistant to SO2 than the 3 % vanadia catalyst. In addition, in-situ SO2 DRIFT study revealed the existence of more surface sulfate species on Sb-CeO2/TiO2 than on vanadia-loaded Sb-CeO2/TiO2 catalysts.
| Original language | English |
|---|---|
| Pages (from-to) | 2635-2650 |
| Number of pages | 16 |
| Journal | Research on Chemical Intermediates |
| Volume | 41 |
| Issue number | 4 |
| DOIs | |
| Publication status | Published - 2015 |
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Keywords
- Activity
- SO oxidation
- TPD
- Vanadia
- XPS
ASJC Scopus subject areas
- Chemistry(all)
Cite this
Vanadia-modified Sb-CeO2/TiO2 catalyst for effective removal of NO by NH3 . / Lee, Kyung Ju; Maqbool, Muhammad Salman; Pullur, Anil Kumar; Jeong, Young Eun; Song, Kwang Ho; Ha, Heon Phil.
In: Research on Chemical Intermediates, Vol. 41, No. 4, 2015, p. 2635-2650.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Vanadia-modified Sb-CeO2/TiO2 catalyst for effective removal of NO by NH3
AU - Lee, Kyung Ju
AU - Maqbool, Muhammad Salman
AU - Pullur, Anil Kumar
AU - Jeong, Young Eun
AU - Song, Kwang Ho
AU - Ha, Heon Phil
PY - 2015
Y1 - 2015
N2 - The Sb-CeO2/TiO2 (SCT) catalytic system with different vanadia loading (0-3 % w/w) was systematically investigated for removal of NO by NH3. A series of catalysts prepared by impregnation and deposition precipitation methods were thoroughly characterized physically, by BET surface area, X-ray diffraction (XRD), and X-ray photoelectron spectroscopy (XPS), and chemically, by temperature-programmed desorption (NH3 and SO2-TPD), temperature programmed reduction (H2-TPR), and in-situ DRIFT study. NH3-TPD and H2-TPR results for 2 and 3 % vanadia-loaded Sb-CeO2/TiO2 catalysts revealed high total acidity and reducibility. As a result, both catalysts had high activity at low temperatures. At 240 °C for 20 h the 2 % vanadia-loaded Sb-CeO2/TiO2 catalyst was more resistant to SO2 than the 3 % vanadia catalyst. In addition, in-situ SO2 DRIFT study revealed the existence of more surface sulfate species on Sb-CeO2/TiO2 than on vanadia-loaded Sb-CeO2/TiO2 catalysts.
AB - The Sb-CeO2/TiO2 (SCT) catalytic system with different vanadia loading (0-3 % w/w) was systematically investigated for removal of NO by NH3. A series of catalysts prepared by impregnation and deposition precipitation methods were thoroughly characterized physically, by BET surface area, X-ray diffraction (XRD), and X-ray photoelectron spectroscopy (XPS), and chemically, by temperature-programmed desorption (NH3 and SO2-TPD), temperature programmed reduction (H2-TPR), and in-situ DRIFT study. NH3-TPD and H2-TPR results for 2 and 3 % vanadia-loaded Sb-CeO2/TiO2 catalysts revealed high total acidity and reducibility. As a result, both catalysts had high activity at low temperatures. At 240 °C for 20 h the 2 % vanadia-loaded Sb-CeO2/TiO2 catalyst was more resistant to SO2 than the 3 % vanadia catalyst. In addition, in-situ SO2 DRIFT study revealed the existence of more surface sulfate species on Sb-CeO2/TiO2 than on vanadia-loaded Sb-CeO2/TiO2 catalysts.
KW - Activity
KW - SO oxidation
KW - TPD
KW - Vanadia
KW - XPS
UR - http://www.scopus.com/inward/record.url?scp=84924852326&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84924852326&partnerID=8YFLogxK
U2 - 10.1007/s11164-013-1376-9
DO - 10.1007/s11164-013-1376-9
M3 - Article
VL - 41
SP - 2635
EP - 2650
JO - Research on Chemical Intermediates
JF - Research on Chemical Intermediates
SN - 0922-6168
IS - 4
ER -