Diesel particulate matter (soot) mainly consists of nanosized carbonaceous solid material, volatile organics and ash, and is trapped by wall-flow monoliths called Diesel Particulate Filters (DPFs), to avoid its release in the atmosphere during vehicle engine operation.In order to periodically regenerate the filter, the loaded soot is oxidized by increasing the flue gases temperature (250-400℃) to the reach soot ignition, which shows appreciable oxidation rates at around 550-650℃.Since this temperature increase is obtained at the expenses of some post-injected fuel, a catalyst can be applied to promote soot combustion at lower temperatures, thus achieving an overall reduced fuel consumption.