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2012年 第6卷 第2期

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《环境科学与工程前沿（英文）》 >> 2012年 第6卷 第2期 doi: 10.1007/s11783-010-0295-x

Characterization and performance of V

Key Laboratory of Environmental Biology and Pollution Control (Ministry of Education), College of Environmental Science and Engineering, Hunan University, Changsha 410082, China

发布日期： 2012-04-01
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A series of CeO supported V O catalysts with various loadings were prepared with different calcination temperatures by the incipient impregnation. The catalysts were evaluated for low temperature selective catalytic reduction (SCR) of NO with ammonia (NH ). The effects of O and SO on catalytic activity were also studied. The catalysts were characterized by specific surface areas (S ) and X–ray diffraction (XRD) methods. The experimental results showed that NO conversion changed significantly with the different V O loading and calcination temperature. With the V O loading increasing from 0 to 10 wt%, NO conversion increased significantly, but decreased at higher loading. The optimum calcination temperature was 400°C. The best catalyst yielded above 80% NO conversion in the reaction temperature range of 160°C–300°C. The formation of CeVO on the surface of catalysts caused the decrease of redox ability.

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