Vanadia-modified Sb-CeO2/TiO2 catalyst for effective removal of NO by NH3

Kyung Ju Lee; Muhammad Salman Maqbool; Anil Kumar Pullur; Young Eun Jeong; Kwang Ho Song; Heon Phil Ha

doi:10.1007/s11164-013-1376-9

Vanadia-modified Sb-CeO₂/TiO₂ catalyst for effective removal of NO by NH₃

Kyung Ju Lee, Muhammad Salman Maqbool, Anil Kumar Pullur, Young Eun Jeong, Kwang Ho Song, Heon Phil Ha

Department of Chemical and Biological Engineering

Research output: Contribution to journal › Article › peer-review

7 Citations (Scopus)

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	https://doi.org/10.1007/s11164-013-1376-9
Publication status	Published - 2015 Apr

Keywords

Activity
SO oxidation
TPD
Vanadia
XPS

ASJC Scopus subject areas

Chemistry(all)

Access to Document

10.1007/s11164-013-1376-9

Cite this

@article{f712321ecf4e44caaa2aa8461546fe38,

title = "Vanadia-modified Sb-CeO2/TiO2 catalyst for effective removal of NO by NH3",

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.",

keywords = "Activity, SO oxidation, TPD, Vanadia, XPS",

author = "Lee, {Kyung Ju} and Maqbool, {Muhammad Salman} and Pullur, {Anil Kumar} and Jeong, {Young Eun} and Song, {Kwang Ho} and Ha, {Heon Phil}",

note = "Funding Information: This work was financially supported by the “Future Core Technology” program from KIST and a Grant from the “Fundamental R&D Program for the Core Technology of Materials” funded by Ministry of Knowledge Economy, Republic of Korea. Publisher Copyright: {\textcopyright} 2013 Springer Science+Business Media Dordrecht.",

year = "2015",

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AU - Lee, Kyung Ju

AU - Maqbool, Muhammad Salman

AU - Pullur, Anil Kumar

AU - Jeong, Young Eun

AU - Song, Kwang Ho

AU - Ha, Heon Phil

N1 - Funding Information: This work was financially supported by the “Future Core Technology” program from KIST and a Grant from the “Fundamental R&D Program for the Core Technology of Materials” funded by Ministry of Knowledge Economy, Republic of Korea. Publisher Copyright: © 2013 Springer Science+Business Media Dordrecht.

PY - 2015/4

Y1 - 2015/4

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.

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