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Journal of Zhejiang University SCIENCE A 2007 Vol.8 No.11 P.1839~1845

http://doi.org/10.1631/jzus.2007.A1839


Catalytic properties of CuO/Sn0.9Ti0.1O2 and CuO/Sn0.7Ti0.3O2 in NO+CO reaction


Author(s):  JIANG Xiao-yuan, DU Feng, ZHANG Xu, JIA Yan-rong, ZHENG Xiao-ming

Affiliation(s):  Institute of Catalysis, Faculty of Science, Zhejiang University, Hangzhou 310027, China

Corresponding email(s):   xyjiang@mail.hz.zj.cn

Key Words:  SnxTi1&minus, xO2 mixed oxides, CuO/SnxTi1&minus, xO2 catalysts, H2 atmosphere pretreatment, NO+CO reaction


JIANG Xiao-yuan, DU Feng, ZHANG Xu, JIA Yan-rong, ZHENG Xiao-ming. Catalytic properties of CuO/Sn0.9Ti0.1O2 and CuO/Sn0.7Ti0.3O2 in NO+CO reaction[J]. Journal of Zhejiang University Science A, 2007, 8(11): 1839~1845.

@article{title="Catalytic properties of CuO/Sn0.9Ti0.1O2 and CuO/Sn0.7Ti0.3O2 in NO+CO reaction",
author="JIANG Xiao-yuan, DU Feng, ZHANG Xu, JIA Yan-rong, ZHENG Xiao-ming",
journal="Journal of Zhejiang University Science A",
volume="8",
number="11",
pages="1839~1845",
year="2007",
publisher="Zhejiang University Press & Springer",
doi="10.1631/jzus.2007.A1839"
}

%0 Journal Article
%T Catalytic properties of CuO/Sn0.9Ti0.1O2 and CuO/Sn0.7Ti0.3O2 in NO+CO reaction
%A JIANG Xiao-yuan
%A DU Feng
%A ZHANG Xu
%A JIA Yan-rong
%A ZHENG Xiao-ming
%J Journal of Zhejiang University SCIENCE A
%V 8
%N 11
%P 1839~1845
%@ 1673-565X
%D 2007
%I Zhejiang University Press & Springer
%DOI 10.1631/jzus.2007.A1839

TY - JOUR
T1 - Catalytic properties of CuO/Sn0.9Ti0.1O2 and CuO/Sn0.7Ti0.3O2 in NO+CO reaction
A1 - JIANG Xiao-yuan
A1 - DU Feng
A1 - ZHANG Xu
A1 - JIA Yan-rong
A1 - ZHENG Xiao-ming
J0 - Journal of Zhejiang University Science A
VL - 8
IS - 11
SP - 1839
EP - 1845
%@ 1673-565X
Y1 - 2007
PB - Zhejiang University Press & Springer
ER -
DOI - 10.1631/jzus.2007.A1839


Abstract: 
Using snxTi1&minus;xO2 as carriers, CuO/Sn0.9Ti0.1O2 and CuO/Sn0.7Ti0.3O2 catalysts with different loading amounts of copper oxide (CuO) were prepared by an impregnation method. The catalytic properties of CuO/Sn0.9Ti0.1O2 and CuO/Sn0.7Ti0.3O2 were examined using a microreactor-gas chromatography (GC) NO+CO reaction system and the methods of BET (Brunauer-Emmett-Teller), TG-DTA (themogravimetric and differential thermal analysis), X-ray diffraction (XRD) and H2-temperature programmed reduction (TPR). The results showed that NO conversions of Sn0.9Ti0.1O2 and Sn0.7Ti0.3O2 were 47.2% and 43.6% respectively, which increased to 95.3% and 90.9% at 6 wt% CuO loading. However, further increase in CuO loading caused a decrease in the catalytic activity. The nitrogen adsorption-desorption isotherm and pore-size distribution curve of Sn0.9Ti0.1O2 and Sn0.7Ti0.3O2 represented type IV of the BDDT (Brunauer, Deming, Deming and Teller) system and a typical mesoporous sample. There were two CuO diffraction peaks (2θ 35.5° and 38.7°), and the diffraction peak areas increased with increasing CuO loading. TPR analysis also detected three peaks (α, β and γ) from the CuO-loaded catalysts, suggesting that the α peak was the reduction of the highly dispersed copper oxide, the β peak was the reduction of the isolated copper oxide, and the γ peak was the reduction of crystal phase copper oxide. In addition, a fourth peak (δ) of the catalysts meant that the snxTi1&minus;xO2 mixed oxides could be reductive.

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