Citation: LIU Jun, WANG Liang-liang, FEI Zhao-yang, CHEN Xian, TANG Ji-hai, CUI Mi-fen, QIAO Xu. Structure and properties of amorphous CeO₂@TiO₂ catalyst and its performance in the selective catalytic reduction of NO with NH₃[J]. Journal of Fuel Chemistry and Technology, ;2016, 44(8): 954-960. shu

Structure and properties of amorphous CeO₂@TiO₂ catalyst and its performance in the selective catalytic reduction of NO with NH₃

LIU Jun ^1,2 ,
WANG Liang-liang ^1,2 ,
FEI Zhao-yang ^1,2,*,, ,
CHEN Xian ¹ ,
TANG Ji-hai ¹ ,
CUI Mi-fen ¹ ,
QIAO Xu ^1,2,*,,

1.
State Key Laboratory of Materials-Oriented Chemical Engineering, Nanjing University of Technology, Nanjing 210009, China
2.
College of Chemistry and Chemical Engineering, Nanjing University of Technology, Nanjing 210009, China

Corresponding author: FEI Zhao-yang, zhaoyangfei@njtech.edu.cn QIAO Xu, qct@njtech.edu.cn
Received Date: 5 April 2016
Revised Date: 6 May 2016

Figures(8)

Amorphous CeO₂@TiO₂ catalyst was prepared by spontaneous deposition method and characterized by XRD, Raman spectra, TEM, N₂ physisorption, H₂-TPR, NH₃-TPD and FT-IR; its performance in the selective catalytic reduction (SCR) of NO with NH₃ was investigated. The results show that there is a strong interaction between Ce and Ti which are combined at atomic level. In comparison with the crystal CeO₂/TiO₂ catalyst prepared by impregnation, the amorphous CeO₂@TiO₂ catalyst exhibits larger surface area and pore volume, excellent redox ability and acidity, and outstanding catalytic performance in SCR. Over the CeO₂@TiO₂ catalyst, the conversion of NO reaches 80% at 175℃ and retains 96.0%-99.4% at 200-400℃. Moreover, the amorphous CeO₂@TiO₂ catalyst also shows strong resistance to H₂O and SO₂ poisoning.
- amorphous phase,
- CeO₂@TiO₂,
- selective catalytic reduction (SCR),
- spontaneous deposition,
- denitration NO,
- SO₂ poisoning
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沈阳化工大学材料科学与工程学院沈阳 110142

Structure and properties of amorphous CeO2@TiO2 catalyst and its performance in the selective catalytic reduction of NO with NH3

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通讯作者: 陈斌, bchen63@163.com

Structure and properties of amorphous CeO₂@TiO₂ catalyst and its performance in the selective catalytic reduction of NO with NH₃