Particle filter for use in exhaust line of e.g. diesel engine, has caps and ceramic filtering mater

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The present invention relates to a particle filter assembled in the line of exhaust 1 of an engine internal àcombustion, in particular of a diesel engine, including/understanding a particle 2 filter including/understanding desbouchons 6 and one ceramic material 3 having a porosity from at least 40% impregnated of formulationcatalytic able to retain nitrogen oxides, the aforementioned formulation including/understanding at least métalprécieux, at least a metal oxide of transition and/or rare earths, and at least an element alcalinoterreux alcalinet/ou.