Abstract
The effect of Pt addition over catalyst supported on PRO-66 was investigated for NO reduction in order to develop the catalytic filter working at low temperature. Catalytic filters, , were prepared by co-impregnation of Pt, V, and W precursors on -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 (for the catalytic filter without Pt addition) to , reducing 700 ppm NO to achieve the slip concentration() less than 20 ppm at the face velocity of 2 cm/s. 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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