| 摘要 |
PURPOSE:To provide a ceramic honeycomb catalyst with a low heat capacity, which is carried in a ceramic honeycomb structure including thin partitions but having adequate isostatic breaking strength. CONSTITUTION:In a ceramic honeycomb structure 10 of a catalyst carrier, the thickness of the peripheral wall 11 is at least 0.1mm, and the thickness (t) of the partition wall 12 which forms a passage inside the peripheral wall 11 is 0.050-0.150mm. The opening OFA and the bulk density G, when k = true specific gravity of a material - porosity of a material, satisfy the following expressions: 0.65<=OFA<=-0.58Xt+0.98 and kX{1-(-0.58Xt+0.98)}<=G<=kX0.35. The heat capacity of 1m<3> of the catalyst carried in the honeycomb structure 10 is 450kJ/K or less. The honeycomb structure 10, containing the catalyst of low heat capacity, can have an A axis compressive strength of 50kgf/cm<2> or more and a B axis compressive strength 5kgf/cm<2> or more. |
