Patent ID: 9421495
Filing Date: 2016-08-23
CPC Classification: B01D,B01J,F01N,Y02T

Claim Text:
1. A structural body for supporting a catalyst, comprising: a porous catalyst support that is heated due to electricity being supplied thereto, and through which exhaust can pass in a predetermined direction; a pair of electrodes that are disposed so as to contact the porous catalyst support at opposing positions with the porous catalyst support therebetween, as seen in an orthogonal cross-section that is orthogonal to a direction in which the exhaust flows; gradually decreasing width portions that are formed at the porous catalyst support and whose widths, in a direction orthogonal to an electrode center line that connects respective centers of the electrodes as seen in the orthogonal cross-section, gradually decrease toward electrode centers at which a decrease in temperature is caused by heat dissipation at regions contacted by the electrodes, such that a current density is made higher; and a wide portion at which a region of the porous catalyst support that is not contacted by the electrodes is made to have a larger width overall than the gradually decreasing width portions as seen in the orthogonal cross-section, the current density at the wide portion being smaller than the current density at the gradually decreasing width portions, and a width of a maximum width portion, at which a width of the region is at a maximum, being 77% to 93% of a length of the electrode center line in order to lower a temperature difference between the higher temperature region and the lowest temperature region at the porous catalyst support.