Environmental Engineering Research

Korean Society of Environmental Engineers (대한환경공학회)
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NO REDUCTION PROPERTY OF Pt-V2O5-WO3/TiO2 CATALYST SUPPORTED ON PRD-66 CERAMIC FILTER

  • Kim, Young-Ae (Department of Chemical & Biological Engineering/ERI, Gyeongsang National University) ;
  • Choi, Joo-Hong (Department of Chemical & Biological Engineering/ERI, Gyeongsang National University) ;
  • Bak, Young-Cheol (Department of Chemical & Biological Engineering/ERI, Gyeongsang National University)
  • Published : 2005.10.31
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Abstract

The effect of Pt addition over $V_2O_5-WO_3/TiO_2$ catalyst supported on PRO-66 was investigated for NO reduction in order to develop the catalytic filter working at low temperature. Catalytic filters, $Pt-V_2O_5-WO_3/TiO_2/PRD$, were prepared by co-impregnation of Pt, V, and W precursors on $TiO_2$-coated ceramic filter named PRD (PRD-66). Titania was coated onto the pore surface of the ceramic filter using a vacuum aided-dip coating method. The Pt-loaded catalytic filter shifted the optimum working temperature from $260-320^{\circ}C$(for the catalytic filter without Pt addition) to $190-240^{\circ}C$, reducing 700 ppm NO to achieve the $N_x$ slip concentration($N_x\;=\;NO+N_2O+NO_2+NH_3$) less than 20 ppm at the face velocity of 2 cm/s. $Pt-V_2O_5-WO_3/TiO_2$ supported on PRD showed the similar catalytic activity for NO reduction with that supported on SiC filter as reported in a previous study, which implies the ceramic filter itself has no considerable interaction for the catalytic activity.

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References

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