| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a honeycomb structure unit capable of uniformizing the temperature distribution of a honeycomb structure, and restraining the internal stress of the honeycomb structure by reducing the temperature gradient of the honeycomb structure, in the honeycomb structure unit including a cylinder body and the honeycomb structure. <P>SOLUTION: The honeycomb structure unit 10 includes the cylinder body 5, and the honeycomb structure 3 including a plurality of cells 2 stored in the cylinder body 5 and extending in the axis L direction of the cylinder body 5. In the honeycomb structure 3, the thermal conductivity of an outer peripheral region E on an outer side relative to that of a center region C corresponding to the axis L is set higher than that of the center region C on a cross-sectional surface vertical to the axis L direction. The outer peripheral region E can be formed of at least one of processes of mixing fiber or particles having relatively high porosity, formed of a material relatively high in thermal conductivity, and relatively high in thermal conductivity in the base material of the honeycomb structure, and covering the surface of the base material of the honeycomb structure with a catalyst coat layer relatively high in thermal conductivity. <P>COPYRIGHT: (C)2013,JPO&INPIT |
