| NO REDUCTION PROPERTY OF Pt-V2O5-WO3/TiO2 CATALYST SUPPORTED ON PRD-66 CERAMIC FILTER |
| Young-Ae Kim, Joo-Hong Choi†, and Young-Cheol Bak |
| Department of Chemical & Biological Engineering/ERI, Gyeongsang National University, Jinju, 660-701, Korea |
Corresponding Author:
Joo-Hong Choi ,Tel: +82-55-751-5387, Fax: +82-55-753-1806, Email: jhchoi@gsnu.ac.kr
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Received: April 6, 2005; Accepted: October 2, 2005. |
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| ABSTRACT |
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The effect of Pt addition over ViOs-WOi-TiCb catalyst supported on PRD-66 was investigated for NO reduction in order to develop the catalytic filter working at low temperature. Catalytic filters, Pt-ViOs-WOs-TiOi/PRD, were prepared by co-impregnation of Pt, V, and W precursors on TiC>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°C(for the catalytic filter without Pt addition) to I90-240°C. reducing 700 ppm NO to achieve the NU slip concentration (N, = NO+N;0+NO:+NHi) less (han 20 ppm at the face velocity of 2 cm/s. Pt-V;05-WOj-Ti02 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. |
| Keywords:
Catalytic filter | Low temperature | Ammonia | NO reduction | Platinum effect | Ceramic filter |
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