Activity of V2O5-WO3/TiO2-based SCR Catalyst for the Oxidation of Gas-phase Elemental Mercury 


Vol. 17,  No. 4, pp. 370-378, Dec.  2011


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  Abstract

Catalytic activity of V2O5-WO3/TiO2-based SCR catalyst was examined for the oxidation of gas-phase elemental mercury to oxidized mercury. Mercury species was not detected on the commercial SCR catalyst after the oxidation reaction of elemental mercury, regadless of the presence of HCl acting as oxidant and the reaction conditions. This suggests that elemental mercury oxidation by HCl could occur via a Eley-Rideal mechanism with gas phase or weakly-bound mercury on the surface of V2O5-WO3/TiO2 SCR catalyst. The activity for mercury oxidation was significantly increased with the increase of V2O5 loading, which indicates that V2O5 is the active site. However, turnover frequency for mercury oxidation was decreased with the increase of V2O5 loading, indicating the activity for mercury oxidation was strongly dependent on the surface structure of vanadia species. The activity for oxidation of elemental mercury under SCR condition was much less than that under oxidation condition at the same HCl concentration and reaction temperature.

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  Cite this article

[IEEE Style]

H. HJ and H. SW, "Activity of V2O5-WO3/TiO2-based SCR Catalyst for the Oxidation of Gas-phase Elemental Mercury," Clean Technology, vol. 17, no. 4, pp. 370-378, 2011. DOI: .

[ACM Style]

Hong HJ and Ham SW. 2011. Activity of V2O5-WO3/TiO2-based SCR Catalyst for the Oxidation of Gas-phase Elemental Mercury. Clean Technology, 17, 4, (2011), 370-378. DOI: .

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pISSN : 1598 - 9712
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