| abstract |
The present invention relates to an exhaust gas purification device, an exhaust gas purification system, and a manufacturing method of the exhaust gas purification device. The exhaust gas purification device includes a honeycomb base material including an inflow hole and an outflow hole adjacent to each other with a partition wall therebetween, a first sealing portion provided at the outflow side end of the inflow hole, and a second sealing portion provided at the inflow side end of the outflow hole, and a catalyst layer provided on the partition wall; at least one of the first sealing portion and the second sealing portion is an OSC material-containing sealing portion containing an OSC material and a sealing material, and the OSC material-containing sealing portion in the above-mentioned sealing portion The concentration of OSC material is uniform in the extension direction. |