Simultaneous Removal of NOx and Gas-Phase Mercury Using Ceria-Titania Materials

Thursday, November 11, 2010: 9:45 AM
250 A Room (Salt Palace Convention Center)
Stephen W. Thiel1, Juan He1, Panagiotis Smirniotis1 and Neville G. Pinto2, (1)Chemical & Materials Engineering, University of Cincinnati, Cincinnati, OH, (2)School of Energy, Environmental, Biological, and Medical Engineering, University of Cincinnati, Cincinnati, OH

Mercury capture using metal oxides and selective catalytic reduction (SCR) catalysts has been studied. Titania-supported manganese oxide was previously found to have an elemental mercury uptake of more than 50 mg/g in fixed-bed adsorption tests using a nitrogen environment at 175C. The current study shows that manganese dioxide supported on ceria-titania can be used for vapor phase elemental mercury capture from nitrogen at 160 to 200C; mercury capacities ranged from 4 to 54 mg Hg0/g adsorbent depending on the specific gas composition and temperature. It was also found that manganese dioxide supported on ceria-titania showed quantitative NOx reduction using NH3 as reductant at a reaction temperature below 200C. Most significantly, it was found that manganese dioxide supported on ceria-titania can remove elemental mercury and NOx simultaneously at 175C in a fixed-bed system.

Extended Abstract: File Not Uploaded
See more of this Session: Adsorbent Materials I
See more of this Group/Topical: Separations Division