Enhanced activity of ceria loaded Sb-V2O5/TiO 2 catalysts for NO reduction with ammonia

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

doi:10.1007/s10562-013-1035-1

Enhanced activity of ceria loaded Sb-V₂O₅/TiO ₂ catalysts for NO reduction with ammonia

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

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

14 Citations (Scopus)

Abstract

The effect of Ce-loading over Sb-V₂O₅/TiO₂ catalysts was investigated for the removal of NO_x by NH₃. In order to understand the influence of Ce-loading over Sb-V₂O ₅/TiO₂, NH₃-temperature programmed desorption, H₂-temperature programmed reduction, X-ray photoelectron spectroscopy (XPS) and diffused reflectance infrared fourier transformed spectroscopy (DRIFTS) were carried out. The 10 % Ce-loaded Sb-V₂O ₅/TiO₂ catalyst exhibited superior activity than commercial V₂O₅-WO₃-TiO₂ under 6 % H₂O and 800 ppm SO₂. The XPS results indicated the presence of Ce³⁺ species. The amount of Brønsted acid sites significantly increased as a result of Ce-loading. The DRIFT spectrum of Sb-V₂O₅/TiO₂ catalyst indicated a peak at 1,363 cm^-1, which corresponded to intermediates of ammonia oxidation species at 350 C. Experimental results suggest that high NO_x conversion and N₂ selectivity of 10 % Ce-loaded Sb-V ₂O₅/TiO₂ was attributed to enhanced acidity and reducibility.

Original language	English
Pages (from-to)	988-995
Number of pages	8
Journal	Catalysis Letters
Volume	143
Issue number	10
DOIs	https://doi.org/10.1007/s10562-013-1035-1
Publication status	Published - 2013 Oct

Bibliographical note

Funding Information:
Acknowledgments This work was financially supported by ‘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.

Keywords

Ammonia
Ce-loading
DRIFTS
NO conversion
XPS

ASJC Scopus subject areas

Catalysis
General Chemistry

Access to Document

10.1007/s10562-013-1035-1

Cite this

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title = "Enhanced activity of ceria loaded Sb-V2O5/TiO 2 catalysts for NO reduction with ammonia",

abstract = "The effect of Ce-loading over Sb-V2O5/TiO2 catalysts was investigated for the removal of NOx by NH3. In order to understand the influence of Ce-loading over Sb-V2O 5/TiO2, NH3-temperature programmed desorption, H2-temperature programmed reduction, X-ray photoelectron spectroscopy (XPS) and diffused reflectance infrared fourier transformed spectroscopy (DRIFTS) were carried out. The 10 % Ce-loaded Sb-V2O 5/TiO2 catalyst exhibited superior activity than commercial V2O5-WO3-TiO2 under 6 % H2O and 800 ppm SO2. The XPS results indicated the presence of Ce3+ species. The amount of Br{\o}nsted acid sites significantly increased as a result of Ce-loading. The DRIFT spectrum of Sb-V2O5/TiO2 catalyst indicated a peak at 1,363 cm-1, which corresponded to intermediates of ammonia oxidation species at 350 C. Experimental results suggest that high NOx conversion and N2 selectivity of 10 % Ce-loaded Sb-V 2O5/TiO2 was attributed to enhanced acidity and reducibility.",

keywords = "Ammonia, Ce-loading, DRIFTS, NO conversion, XPS",

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

note = "Funding Information: Acknowledgments This work was financially supported by {\textquoteleft}Future core technology{\textquoteright} program from KIST and a grant from the {\textquoteleft}Fundamental R&D Program for the core technology of materials{\textquoteright} funded by Ministry of Knowledge Economy, Republic of Korea.",

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T1 - Enhanced activity of ceria loaded Sb-V2O5/TiO 2 catalysts for NO reduction with ammonia

AU - Lee, Kyung Ju

AU - Maqbool, Muhammad Salman

AU - Kumar, Pullur Anil

AU - Song, Kwang Ho

AU - Ha, Heon Phil

N1 - Funding Information: Acknowledgments This work was financially supported by ‘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.

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N2 - The effect of Ce-loading over Sb-V2O5/TiO2 catalysts was investigated for the removal of NOx by NH3. In order to understand the influence of Ce-loading over Sb-V2O 5/TiO2, NH3-temperature programmed desorption, H2-temperature programmed reduction, X-ray photoelectron spectroscopy (XPS) and diffused reflectance infrared fourier transformed spectroscopy (DRIFTS) were carried out. The 10 % Ce-loaded Sb-V2O 5/TiO2 catalyst exhibited superior activity than commercial V2O5-WO3-TiO2 under 6 % H2O and 800 ppm SO2. The XPS results indicated the presence of Ce3+ species. The amount of Brønsted acid sites significantly increased as a result of Ce-loading. The DRIFT spectrum of Sb-V2O5/TiO2 catalyst indicated a peak at 1,363 cm-1, which corresponded to intermediates of ammonia oxidation species at 350 C. Experimental results suggest that high NOx conversion and N2 selectivity of 10 % Ce-loaded Sb-V 2O5/TiO2 was attributed to enhanced acidity and reducibility.

AB - The effect of Ce-loading over Sb-V2O5/TiO2 catalysts was investigated for the removal of NOx by NH3. In order to understand the influence of Ce-loading over Sb-V2O 5/TiO2, NH3-temperature programmed desorption, H2-temperature programmed reduction, X-ray photoelectron spectroscopy (XPS) and diffused reflectance infrared fourier transformed spectroscopy (DRIFTS) were carried out. The 10 % Ce-loaded Sb-V2O 5/TiO2 catalyst exhibited superior activity than commercial V2O5-WO3-TiO2 under 6 % H2O and 800 ppm SO2. The XPS results indicated the presence of Ce3+ species. The amount of Brønsted acid sites significantly increased as a result of Ce-loading. The DRIFT spectrum of Sb-V2O5/TiO2 catalyst indicated a peak at 1,363 cm-1, which corresponded to intermediates of ammonia oxidation species at 350 C. Experimental results suggest that high NOx conversion and N2 selectivity of 10 % Ce-loaded Sb-V 2O5/TiO2 was attributed to enhanced acidity and reducibility.

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