Issue 10, 2013
From the journal:

Catalysis Science & Technology

Selective oxidation of H2S over V2O5 supported on CeO2-intercalated Laponite clay catalysts

Xin Zhang,a   Guangyu Dou,a   Zhuo Wang,a   Jie Cheng,a   Hailin Wang,a   Chunyan Maa  and  Zhengping Hao*a  

* Corresponding authors

a Department of Environmental Nano-materials, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, P. R. China
E-mail: zpinghao@rcees.ac.cn
Fax: +86-10-62923564
Tel: +86-10-62923564

Abstract

A series of V2O5 supported on CeO2-intercalated clay catalysts (named V2O5/Ce-Lap catalysts) with mesoporous structure and high specific surface area were prepared. The structural characteristics and physicochemical properties were studied in detail. These catalysts were evaluated for the H2S selective oxidation. It was revealed that all V2O5/Ce-Lap catalysts showed high catalytic activities in the temperature range of 120–220 °C due to the redox reaction of highly dispersed V5+ species, and the catalytic mechanism obeyed a redox process, i.e. a stepwise mechanism. Additionally, the chemically absorbed oxygen also played an important role in H2S selective oxidation. Among them, the 5% V2O5/Ce-Lap catalyst presented the best catalytic activity and excellent regenerability at 180 °C. Finally, the catalyst deactivation mechanism was explored.

Graphical abstract: Selective oxidation of H2S over V2O5 supported on CeO2-intercalated Laponite clay catalysts

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Article information

DOI
https://doi.org/10.1039/C3CY00431G
Article type
Paper
Submitted
24 Jun 2013
Accepted
26 Jul 2013
First published
20 Aug 2013

Catal. Sci. Technol., 2013,3, 2778-2785

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Selective oxidation of H2S over V2O5 supported on CeO2-intercalated Laponite clay catalysts

X. Zhang, G. Dou, Z. Wang, J. Cheng, H. Wang, C. Ma and Z. Hao, Catal. Sci. Technol., 2013, 3, 2778 DOI: 10.1039/C3CY00431G

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