EXHAUST PURIFICATION FILTER

The object of the present invention is to provide an exhaust purification filter with which pressure loss can be reduced, the filter having high exhaust purification performance and granular-substance-filtering performance. In order to solve the problem, the invention provides the exhaust purification filter which comprises a filter base material having a wall flow structure, and an exhaust purification catalyst supported on a dividing wall of the filter base material, the exhaust purification filter being such that: a median pore diameter (D50) of the filter base material according to a volumetric basis is 15 [Mu]m or greater; and the exhaust purification catalyst is unevenly supported on a high-density layer, in which the density of the exhaust purification catalyst is relatively high, and a low-density layer, in which the density of the exhaust purification catalyst is relatively low. 本发明所要解决的问题在于，提供一种排气净化过滤器，其能够降低压损，并且具有高排气净化性能及颗粒状物质捕捉性能。为了解决上述问题，本发明提供一种排气净化过滤器，其具备壁流结构的过滤器基材、及担载于过滤器基材的间隔壁上的排气净化催化剂，过滤器基材的基