HONEYCOMB FILTER

• Main Authors: ANO YUSUKE, YAMANISHI OSAMU
• Format: Patent
• Language: English; Japanese
• Published: 06.12.2018
• Subjects: ARTIFICIAL STONE; BLASTING; CEMENTS; CERAMICS; CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY; CHEMISTRY; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDINGMATERIALS; CONCRETE; ENGINE PLANTS IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNALCOMBUSTION ENGINES; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES ORENGINES IN GENERAL; HEATING; LIGHTING; LIME, MAGNESIA; MACHINES OR ENGINES IN GENERAL; MECHANICAL ENGINEERING; METALLURGY; PERFORMING OPERATIONS; PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL; REFRACTORIES; SEPARATION; SLAG; STEAM ENGINES; THEIR RELEVANT APPARATUS; TRANSPORTING; TREATMENT OF NATURAL STONE; WEAPONS

To provide a honeycomb filter which can suppress carrying of a catalyst to a ceramic coat layer.SOLUTION: A honeycomb filter 300 includes a columnar porous core part 100 and a porous ceramic coat layer 200 arranged on an outer peripheral surface of the core part 100. The core part 100 includes a porous ceramic honeycomb structure 120 having a plurality of flow passages, and a plurality of sealing parts 130 which close one end of a part of the flow passages out of the plurality of flow passages, and the other end of the other flow passages out of the plurality of flow passages. When a specific surface area and an ignition loss of the ceramic coat layer 200 are respectively Sc(m/g), and Lc(-), an expression (1) is satisfied. Lc/Sc≤100×10g/m(1).SELECTED DRAWING: Figure 1 【課題】セラミックコート層への触媒の担持を抑制できるハニカムフィルタを提供する。【解決手段】ハニカムフィルタ３００は、柱状で多孔質のコア部１００と、コア部１００の外周面上に設けられた多孔質のセラミックコート層２００と、を備える。コア部１００は、複数の流路を有する多孔質のセラミックハニカム構造体１２０と、複数の流路の内の一部の流路の一端、及び、前記複数の流路の内の残部の流路の他端を閉じる複数の封口部１３０と、を有する。セラミックコート層２００の比表面積、灼熱減量をそれぞれＳｃ（ｍ２／ｇ）、Ｌｃ（−）とした時に（１）式を満たす。Ｌｃ／Ｓｃ≦１００×１０−５ｇ／ｍ２（１）【選択図】図１