| 摘要 |
PROBLEM TO BE SOLVED: To provide a filter having excellent NOx removing performance, high collection efficiency of particulate substances, and with little pressure loss.SOLUTION: The filter includes a base material having a porous partition wall defining a plurality of cells extended from one end face serving as fluid channels to the other end face, and sealing parts disposed on one ends of given cells and on the other ends of the remaining cells. The partition wall contains zeolite ion-exchanged with metal ions, metal ion content of the zeolite contained in the partition wall is 2-10 mass%, the porosity of the partition wall is 45-65%, and an average fine hole diameter of the partition wall is 10-35 μm. |
