Nanosized V-Ce Oxides Supported on TiO<sub>2</sub> as a Superior Catalyst for the Selective Catalytic Reduction of NO

Long Lu; Xueman Wang; Chunhua Hu; Ying Liu; Xiongbo Chen; Ping Fang; Dingsheng Chen; Chaoping Cen

doi:10.3390/catal10020202

Catalysts (Feb 2020)

Nanosized V-Ce Oxides Supported on TiO<sub>2</sub> as a Superior Catalyst for the Selective Catalytic Reduction of NO

Long Lu,
Xueman Wang,
Chunhua Hu,
Ying Liu,
Xiongbo Chen,
Ping Fang,
Dingsheng Chen,
Chaoping Cen

Affiliations

Long Lu: Key Laboratory of Poyang Lake Environment and Resource Utilization, Ministry of Education, School of Resources Environmental & Chemical Engineering, Nanchang University, Nanchang 330031, China
Xueman Wang: Key Laboratory of Poyang Lake Environment and Resource Utilization, Ministry of Education, School of Resources Environmental & Chemical Engineering, Nanchang University, Nanchang 330031, China
Chunhua Hu: Key Laboratory of Poyang Lake Environment and Resource Utilization, Ministry of Education, School of Resources Environmental & Chemical Engineering, Nanchang University, Nanchang 330031, China
Ying Liu: Guangdong Province Engineering Laboratory for Air Pollution Control, South China Institute of Environmental Sciences, the Ministry of Ecology and Environment of PRC, No. 7 West Street, Yuancun, Guangzhou 510655, China
Xiongbo Chen: Guangdong Province Engineering Laboratory for Air Pollution Control, South China Institute of Environmental Sciences, the Ministry of Ecology and Environment of PRC, No. 7 West Street, Yuancun, Guangzhou 510655, China
Ping Fang: Guangdong Province Engineering Laboratory for Air Pollution Control, South China Institute of Environmental Sciences, the Ministry of Ecology and Environment of PRC, No. 7 West Street, Yuancun, Guangzhou 510655, China
Dingsheng Chen: Guangdong Province Engineering Laboratory for Air Pollution Control, South China Institute of Environmental Sciences, the Ministry of Ecology and Environment of PRC, No. 7 West Street, Yuancun, Guangzhou 510655, China
Chaoping Cen: Guangdong Province Engineering Laboratory for Air Pollution Control, South China Institute of Environmental Sciences, the Ministry of Ecology and Environment of PRC, No. 7 West Street, Yuancun, Guangzhou 510655, China

DOI: https://doi.org/10.3390/catal10020202
Journal volume & issue: Vol. 10, no. 2
p. 202

Abstract

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Nanosized V-Ce oxides supported on TiO2 (VCT) were prepared and utilized in the low-temperature selective catalytic reduction (SCR) of NO with NH3. Compared with the other V-Ce oxides-based catalysts supported on Al2O3, ZrO2, and ZSM-5, VCT showed the best SCR activity in a low-temperature range. The NOx conversion of 90% could be achieved at 220 °C. Characterizations including X-ray diffraction (XRD), scanning election micrograph (SEM), transmission electron microscopy (TEM), X-ray photoelectron spectroscopy (XPS), temperature-programmed desorption with NH3 (NH3-TPD), and temperature-programmed reduction with H2 (H2-TPR) showed that V1.05Ce1/TiO2 exhibited a good dispersion of V2O5, enrichment of surface Ce3+ and chemical-absorbed oxygen, and excellent redox capacity and acidity, which resulted in the best SCR performance at low temperature.

Published in Catalysts

ISSN: 2073-4344 (Online)
Publisher: MDPI AG
Country of publisher: Switzerland
LCC subjects: Technology: Chemical technology; Science: Chemistry
Website: https://www.mdpi.com/journal/catalysts

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