Binary metal oxides supported on TiO2 for low-temperature selective catalytic reduction of NOx with NH3

Bi Jun Wu; Xiao Qin Liu; Ping Xiao; Shu Gang Wang

Binary metal oxides supported on TiO₂ for low-temperature selective catalytic reduction of NO_x with NH₃

Bi Jun Wu, Xiao Qin Liu, Ping Xiao, Shu Gang Wang

College of Chemical Engineering

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

21 Scopus citations

Abstract

The manganese-based binary metal oxides supported on titanium dioxide (MnO_x-A/TiO₂) were prepared, where A means Fe₂O₃, WO₃, MoO₃ and Cr₂O₃. Their catalytic activity, N₂ selectivity and SO₂ poisonous tolerance were investigated. The catalytic performance at low temperature decreased in the following order: Mn-W/TiO₂ > Mn-Fe/TiO₂ > Mn-Cr/TiO₂ > Mn-Mo/TiO₂, while N₂ selectivity: Mn-Fe/TiO₂ > Mn-W/TiO₂ > Mn-Mo/TiO₂ > Mn-Cr/TiO₂. In presence of 0.01% SO₂ and 6% H₂O, the NO_x conversion of Mn-W/TiO₂, Mn-Fe/ TiO₂, Mn-Mo/TiO₂ maintained 98.5%, 95.8% and 94.2% respectively after 8 h at 120°C at GHSV 12600 h^-1. As effective promoters, WO₃ and Fe₂O₃ can increase N₂ selectivity and the resistance to SO₂ of MnO_x/TiO₂ significantly. The Fourier transform infrared spectrum (FT-IR) spectra of NH₃ showed that unlike Fe₂O₃, WO₃ also provides part of Lewis acid sites. In presence of low concentration of SO₂, Mn-W/TiO₂ exhibited excellent catalytic performance for low temperature selective catalytic reduction of NO with NH₃.

Original language	English
Pages (from-to)	75-80
Number of pages	6
Journal	Zhongguo Dianji Gongcheng Xuebao/Proceedings of the Chinese Society of Electrical Engineering
Volume	28
Issue number	23
State	Published - 15 Aug 2008

Keywords

Binary metal oxides
Fourier transform infrared spectrum
Low-temperature selective catalytic reduction
NH temperature programmed desorption
Selective catalytic reduction of NO with NH

Cite this

@article{e8f3949b26264cc0a2ead4d9378c7708,

title = "Binary metal oxides supported on TiO2 for low-temperature selective catalytic reduction of NOx with NH3",

abstract = "The manganese-based binary metal oxides supported on titanium dioxide (MnOx-A/TiO2) were prepared, where A means Fe2O3, WO3, MoO3 and Cr2O3. Their catalytic activity, N2 selectivity and SO2 poisonous tolerance were investigated. The catalytic performance at low temperature decreased in the following order: Mn-W/TiO2 > Mn-Fe/TiO2 > Mn-Cr/TiO2 > Mn-Mo/TiO2, while N2 selectivity: Mn-Fe/TiO2 > Mn-W/TiO2 > Mn-Mo/TiO2 > Mn-Cr/TiO2. In presence of 0.01% SO2 and 6% H2O, the NOx conversion of Mn-W/TiO2, Mn-Fe/ TiO2, Mn-Mo/TiO2 maintained 98.5%, 95.8% and 94.2% respectively after 8 h at 120°C at GHSV 12600 h-1. As effective promoters, WO3 and Fe2O3 can increase N2 selectivity and the resistance to SO2 of MnOx/TiO2 significantly. The Fourier transform infrared spectrum (FT-IR) spectra of NH3 showed that unlike Fe2O3, WO3 also provides part of Lewis acid sites. In presence of low concentration of SO2, Mn-W/TiO2 exhibited excellent catalytic performance for low temperature selective catalytic reduction of NO with NH3.",

keywords = "Binary metal oxides, Fourier transform infrared spectrum, Low-temperature selective catalytic reduction, NH temperature programmed desorption, Selective catalytic reduction of NO with NH",

author = "Wu, {Bi Jun} and Liu, {Xiao Qin} and Ping Xiao and Wang, {Shu Gang}",

year = "2008",

month = aug,

day = "15",

language = "英语",

volume = "28",

pages = "75--80",

journal = "Zhongguo Dianji Gongcheng Xuebao/Proceedings of the Chinese Society of Electrical Engineering",

issn = "0258-8013",

publisher = "Chinese Society for Electrical Engineering",

number = "23",

}

TY - JOUR

T1 - Binary metal oxides supported on TiO2 for low-temperature selective catalytic reduction of NOx with NH3

AU - Wu, Bi Jun

AU - Liu, Xiao Qin

AU - Xiao, Ping

AU - Wang, Shu Gang

PY - 2008/8/15

Y1 - 2008/8/15

N2 - The manganese-based binary metal oxides supported on titanium dioxide (MnOx-A/TiO2) were prepared, where A means Fe2O3, WO3, MoO3 and Cr2O3. Their catalytic activity, N2 selectivity and SO2 poisonous tolerance were investigated. The catalytic performance at low temperature decreased in the following order: Mn-W/TiO2 > Mn-Fe/TiO2 > Mn-Cr/TiO2 > Mn-Mo/TiO2, while N2 selectivity: Mn-Fe/TiO2 > Mn-W/TiO2 > Mn-Mo/TiO2 > Mn-Cr/TiO2. In presence of 0.01% SO2 and 6% H2O, the NOx conversion of Mn-W/TiO2, Mn-Fe/ TiO2, Mn-Mo/TiO2 maintained 98.5%, 95.8% and 94.2% respectively after 8 h at 120°C at GHSV 12600 h-1. As effective promoters, WO3 and Fe2O3 can increase N2 selectivity and the resistance to SO2 of MnOx/TiO2 significantly. The Fourier transform infrared spectrum (FT-IR) spectra of NH3 showed that unlike Fe2O3, WO3 also provides part of Lewis acid sites. In presence of low concentration of SO2, Mn-W/TiO2 exhibited excellent catalytic performance for low temperature selective catalytic reduction of NO with NH3.

AB - The manganese-based binary metal oxides supported on titanium dioxide (MnOx-A/TiO2) were prepared, where A means Fe2O3, WO3, MoO3 and Cr2O3. Their catalytic activity, N2 selectivity and SO2 poisonous tolerance were investigated. The catalytic performance at low temperature decreased in the following order: Mn-W/TiO2 > Mn-Fe/TiO2 > Mn-Cr/TiO2 > Mn-Mo/TiO2, while N2 selectivity: Mn-Fe/TiO2 > Mn-W/TiO2 > Mn-Mo/TiO2 > Mn-Cr/TiO2. In presence of 0.01% SO2 and 6% H2O, the NOx conversion of Mn-W/TiO2, Mn-Fe/ TiO2, Mn-Mo/TiO2 maintained 98.5%, 95.8% and 94.2% respectively after 8 h at 120°C at GHSV 12600 h-1. As effective promoters, WO3 and Fe2O3 can increase N2 selectivity and the resistance to SO2 of MnOx/TiO2 significantly. The Fourier transform infrared spectrum (FT-IR) spectra of NH3 showed that unlike Fe2O3, WO3 also provides part of Lewis acid sites. In presence of low concentration of SO2, Mn-W/TiO2 exhibited excellent catalytic performance for low temperature selective catalytic reduction of NO with NH3.

KW - Binary metal oxides

KW - Fourier transform infrared spectrum

KW - Low-temperature selective catalytic reduction

KW - NH temperature programmed desorption

KW - Selective catalytic reduction of NO with NH

UR - http://www.scopus.com/inward/record.url?scp=51149107233&partnerID=8YFLogxK

M3 - 文章

AN - SCOPUS:51149107233

SN - 0258-8013

VL - 28

SP - 75

EP - 80

JO - Zhongguo Dianji Gongcheng Xuebao/Proceedings of the Chinese Society of Electrical Engineering

JF - Zhongguo Dianji Gongcheng Xuebao/Proceedings of the Chinese Society of Electrical Engineering

IS - 23

ER -

Binary metal oxides supported on TiO₂ for low-temperature selective catalytic reduction of NO_x with NH₃

Abstract

Keywords

Other files and links

Fingerprint

Cite this