CATALYST FOR EXHAUST GAS PURIFICATION, AND METHOD FOR PRODUCING THE SAME

To provide a catalyst for exhaust gas purification which is excellent in gas diffusion property of the whole catalyst layer, and has both a high PM collection ratio and a low pressure loss, and a method for producing the same.SOLUTION: A catalyst 100 for exhaust gas purification includes at least a base material 11, and a catalyst layer 21 provided on the base material 11, wherein the catalyst layer 21 contains two or more metal oxide particles, the metal oxide particles contain at least first metal oxide particles carrying first catalyst metal and second metal oxide particles carrying the second catalyst metal, the first metal oxide particles are alumina particles, the second metal oxide particles are non-alumina particles, and in total particle size distribution of all the particles contained in the catalyst layer, cumulative frequency having a modal particle diameter of 40 μm or less and a particle diameter of 5 μm or more is 65% or more.SELECTED DRAWING: Figure 1 【課題】本発明は、触媒層全体のガス拡散性に優れ、高いＰＭ捕集率及び低い圧力損失を兼ね備えた、排ガス浄化用触媒及びその製造方法等を提供する。【解決手段】基材１１、及び前記基材１１上に設けられた触媒層２１を少なくとも備え、前記触媒層２１は、２以上の金属酸化物粒子を含有し、前記金属酸化物粒子は、第１触媒金属を担持した第１金属酸化物粒子と第２触媒金属を担持した第２金属酸化物粒子とを少なくとも含み、前記第１金属酸化物粒子はアルミナ粒子であり、前記第２金属酸化物粒子は非アルミナ粒子であり、前記触媒層中に含まれる全粒子の総粒度分布が、最頻度粒子径が４０μm以下及び粒子径５μｍ以上の累積頻度が６５％以上である、排ガス浄化用触媒１００。【選択図】図１