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Narrow pore size distribution cordierite filters with reduced pressure drop
Narrow pore size distribution cordierite filters with reduced pressure drop
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机译:窄孔分布堇青石过滤器,压降降低
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摘要
A diesel particulate filter having a honeycomb body composed of cordierite and exhibiting a CTE (25-800° C.) of less than 13×10−7/° C.; a median pore diameter, d50, of less than 25 μm; % porosity not less than 53%; and a narrow pore size distribution wherein a value of d50-d10)/d50 is not greater than 0.6; and a value of d90 less than 40 μm wherein d10, and d90 are pore diameters at 10% and 90% of the pore size distribution on a volumetric basis, and d10d50d90. The particulate filter preferably exhibits a plugged, wall-flow honeycomb filter body composed of cordierite and having a plurality of parallel end-plugged cell channels traversing the body from a frontal inlet end to an outlet end thereof.
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