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KMID : 1024520060150040333
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Journal of the Environmental Sciences
2006 Volume.15 No. 4 p.333 ~ p.340
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Low-Temperature Selective Catalytic Reduction of No with NH₃ over Mn-V2O5/TiO₂
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Choi Sang-Ki
Choi Sung-Woo
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Abstract
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A (5 wt.%)Mn-(1 wt.%) catalyst were prepared by co-precipitation method and used for low-temperature selective catalytic reduction (SCR) of with ammonia in the presence of oxygen. The properties of the catalysts were studied by X-ray diffraction (XRD), temperature programmed reduction (TPR) and scanning electron microscope-energy dispersive X-ray spectroscopy (SEM-EDS). The experimental results showed that (5 wt.%)Mn-(1 wt.%) catalyst yielded 81% NO conversion at temperature as low as and a space velocity of . Crystalline phase of was present at Mn on . XRD confirmed the presence of manganese oxide () at . The XRD patterns presented of (5 wt.%)Mn-(1 wt.%) did not show intense or sharp peaks for manganese oxides and vanadia oxides. The TPR profiles of (5 wt.%)Mn-(1 wt.%) catalyst showed main reduction peat of a maximum at .
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KEYWORD
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Mn-V2O5/TiO₂, NOχ, Low-temperature SCR, Manganese oxide
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