Simultaneous Removal of Mercury and NO by Metal Chloride-loaded V2O5-WO3/TiO2-based SCR catalysts 


Vol. 23,  No. 2, pp. 172-180, Jun.  2017
10.7464/ksct.2017.23.2.172


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  Abstract

Thermodynamic evaluation indicates that nearly 100% conversion of elemental mercury to oxidized mercury can be attained by HCl of several tens of ppm level at the temperature window of SCR reaction. Cu-, Fe-, Mn-chloride loaded V2O5- WO3/TiO2 catalysts revealed good NO removal activity at the operating temperature window of SCR process. The catalysts with high desorption temperature indicating adsorption strength of NH3 revealed higher NO removal activity. The HCl fed to the reaction gases promoted the oxidation of mercury. However, the activity for the oxidation of elemental mercury to oxidized mercury by HCl was suppressed by NH3 inhibiting the adsorption of HCl to catalyst surface under SCR reaction condition containing NH3 for NO removal. Metal chloride loaded V2O5-WO3/TiO2 catalysts showed much higher activity for mercury oxidation than V2O5-WO3/TiO2 catalyst without metal chloride under SCR reaction condition. This is primarily attributed to the participation of chloride in metal chloride on the catalyst surface promoting the oxidation of elemental mercury.

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  Cite this article

[IEEE Style]

H. SW, "Simultaneous Removal of Mercury and NO by Metal Chloride-loaded V2O5-WO3/TiO2-based SCR catalysts," Clean Technology, vol. 23, no. 2, pp. 172-180, 2017. DOI: 10.7464/ksct.2017.23.2.172.

[ACM Style]

Ham SW. 2017. Simultaneous Removal of Mercury and NO by Metal Chloride-loaded V2O5-WO3/TiO2-based SCR catalysts. Clean Technology, 23, 2, (2017), 172-180. DOI: 10.7464/ksct.2017.23.2.172.

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pISSN : 1598 - 9712
eISSN : 2288 - 0690

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