| 摘要 |
PROBLEM TO BE SOLVED: To provide a catalyst for exhaust purification that has high catalyst activity allowing PM to be burnt at a low temperature, and has no risk of the scattering of a metal element which is feared to have an impact on the environment, and a device and a filter for exhaust purification with high PM burning efficiency and a method for production of the catalyst.SOLUTION: A catalyst for exhaust purification comprises an oxide comprising one or more element (A) selected from alkali metal and alkaline earth metal and one or more element (B) selected from Zr, Si, Al and Ti, a potassium salt, and a cesium salt.SELECTED DRAWING: Figure 1 |
