| 摘要 |
PROBLEM TO BE SOLVED: To provide a honeycomb catalyst excellent in NOx purification performance at a low temperature, in which MnOis dispersed uniformly in a catalyst raw material.SOLUTION: There is provided a honeycomb catalyst comprising ceramic particles formed by attaching Mn and Ce onto titanium oxide particles. The honeycomb catalyst contains 20-35 wt% Mn in terms of MnOand 4.6-25 wt% Ce in terms of CeO, and a diffraction peak at 2θ=43.0±1° caused by MnOis not detected.SELECTED DRAWING: Figure 1 |
