Hg0 Removal by Activated Coke Supported Metal Oxide Catalysts

Jun Wei Wang; Jian Li Yang; Zhen Yu Liu

doi:10.4028/www.scientific.net/AMR.347-353.1847

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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 347-353Hg0 Removal by Activated Coke Supported Metal...

Hg⁰ Removal by Activated Coke Supported Metal Oxide Catalysts

Abstract:

Gas-phase elemental mercury (Hg⁰) removal by activated coke (AC) supported metal oxide catalysts M_xO_y/AC (M_xO_y=MnO₂, Fe₂O₃, CuO) were studied under N₂+HCl atmosphere and compared with that by AC. The influences of M_xO_y loading, temperature and Hg⁰ concentration on Hg⁰ removal were investigated. The results indicate that the capabilities of M_xO_y/AC for Hg⁰ removal were much higher than that of AC, indicating the important role of M_xO_y. The capabilities were found to follow the trend MnO₂/AC > Fe₂O₃/AC > CuO/AC, which was corresponding to the oxidation activities of M_xO_y. The Hg⁰ removal capability of MnO₂/AC increased with an increase of the MnO₂ loading (1-10 wt.%) and temperature (120-200 °C). Scanning electron microscope-energy dispersive X-ray analysis confirmed the correlation between MnO₂ and Hg adsorbed over MnO₂/AC.

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Periodical:

Advanced Materials Research (Volumes 347-353)

Pages:

1847-1851

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.347-353.1847

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Online since:

October 2011

Authors:

Jun Wei Wang, Jian Li Yang, Zhen Yu Liu

Keywords:

Activated Coke, Hg⁰, Metal Oxide, MnO₂, Removal

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