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    • 81. 发明公开
    • CATALYST FOR EXHAUST GAS CLEAN-UP
    • KATALYSATOR ZUR ABGASREINIGUNG
    • EP1964607A1
    • 2008-09-03
    • EP06834215.3
    • 2006-12-07
    • Cataler Corporation
    • MATSUEDA, SatoshiKIMURA, MareoNARITA, Keiichi
    • B01J23/58B01D53/94B01J32/00F01N3/10
    • B01J23/63B01D53/945B01D2255/204B01D2255/2047B01D2255/206B01D2255/402B01J21/005Y02T10/22
    • An object of the present invention is to provide an exhaust gas-purifying catalyst containing a composite oxide catalyst and a refractory support and being less prone to cause a decrease in its activity even when used at high temperatures in an atmosphere with high oxygen concentration. An exhaust gas-purifying catalyst includes a composite oxide catalyst containing rare-earth element, alkaline-earth element and precious metal, a part of the rare-earth element and a part of the alkaline-earth element forming composite oxide, and the composite oxide and a part of the precious metal forming solid solution, and a refractory support supporting the composite oxide catalyst and including at least one of a first composite oxide represented by a general formula AB 2 O 4 , a second composite oxide having perovskite structure represented by a general formula LMO 3 , and a third composite oxide having pyrochlore structure represented by a general formula X 2 Y 2 O 7 .
    • 本发明的目的是提供一种含有复合氧化物催化剂和耐火载体的废气净化催化剂,即使在高浓度氧气氛中在高温下使用也不易引起其活性降低。 废气净化催化剂包括含有稀土元素,碱土金属元素和贵金属的复合氧化物催化剂,稀土元素的一部分和形成碱土金属元素的复合氧化物的一部分,复合氧化物 和形成贵金属的固体溶液的一部分,以及负载复合氧化物催化剂的耐火载体,并且包括由通式AB 2 O 4表示的第一复合氧化物中的至少一种,具有由 通式LMO 3和具有由通式X 2 Y 2 O 7表示的烧绿石结构的第三复合氧化物。
    • 89. 发明公开
    • HONEYCOMB STRUCTURE BODY
    • WABENSTRUKTURKÖRPER
    • EP1676622A4
    • 2006-09-27
    • EP04792936
    • 2004-10-25
    • IBIDEN CO LTD
    • OHNO KAZUSHIGEOSHIMI YUKIO
    • B01D39/20F01N3/02B01D46/00B01D46/24B01D53/86B01D53/94B01J27/224B01J32/00B01J35/04C04B38/00F01N3/28
    • B01D46/247B01D46/0063B01D46/244B01D46/2444B01D46/2451B01D46/2459B01D2046/2496B01J35/04C04B38/0006C04B2111/00793C04B2111/0081C04B35/00C04B38/0012
    • An obj ect of the present invention is to provide a honeycomb structural body which makes it possible to prevent a thermal stress from concentrating on plugs for sealing a group of inlet-side through holes and the vicinity thereof during a regenerating process, and consequently to prevent occurrence of cracks. The honeycomb structural body of the present invention is a pillar-shaped honeycomb structural body mainly made of porous ceramics, in which a plurality of through holes are placed in parallel with one another in the length direction with a partition wall interposed therebetween. Herein, the through holes are constituted by a group of inlet-side through holes, whose ends are sealed by plugs at the outlet side such that the total sum of areas on cross sections perpendicular to the length direction is made relatively greater, and a group of outlet-side through holes, whose ends are sealed by plugs at the inlet side such that the total sum of areas on the cross sections thereof is made relatively smaller. Supposing that the aperture rate on the inlet side is X (%) and that the total sum of thermal capacities of the plugs which seal the group of inlet-side through holes at 500°C per 11.8 cm 2 of the end face on the outlet side containing the group of the outlet-side through holes is represented by Y(J/K), the relationship indicated by the following inequalities (1) and (2) is satisfied. 0.0157 X ˆ’ 0.0678
    • 可以防止在用于密封入口侧通孔的密封材料中或在密封材料附近发生在热处理应力集中引起的裂纹恢复处理中的蜂窝结构体。 蜂窝结构体是由多孔陶瓷形成的柱状蜂窝结构体,其具有在长度方向上布置有隔壁的通孔。 通孔由入口侧通孔和存在侧通孔组成。 出口侧的端部用密封材料密封,使得垂直于长度方向的横截面的总面积变得相对较大。 而且,入口侧的端部被密封材料密封,使得垂直于长度方向的横截面的总面积变得相对较小。 表示包括出口侧通孔的<>出口侧端面的面积0.0157X-0.0678的表达式。
    • 90. 发明公开
    • HONEYCOMB STRUCTURE BODY
    • HONEYCOMB结构身体
    • EP1676622A1
    • 2006-07-05
    • EP04792936.9
    • 2004-10-25
    • IBIDEN CO., LTD.
    • OHNO, Kazushige c/o IBIDEN CO., LTD.OSHIMI, Yukio c/o IBIDEN CO., LTD.
    • B01D39/20B01D53/94B01J32/00B01J35/04
    • An obj ect of the present invention is to provide a honeycomb structural body which makes it possible to prevent a thermal stress from concentrating on plugs for sealing a group of inlet-side through holes and the vicinity thereof during a regenerating process, and consequently to prevent occurrence of cracks. The honeycomb structural body of the present invention is a pillar-shaped honeycomb structural body mainly made of porous ceramics, in which a plurality of through holes are placed in parallel with one another in the length direction with a partition wall interposed therebetween. Herein, the through holes are constituted by a group of inlet-side through holes, whose ends are sealed by plugs at the outlet side such that the total sum of areas on cross sections perpendicular to the length direction is made relatively greater, and a group of outlet-side through holes, whose ends are sealed by plugs at the inlet side such that the total sum of areas on the cross sections thereof is made relatively smaller. Supposing that the aperture rate on the inlet side is X (%) and that the total sum of thermal capacities of the plugs which seal the group of inlet-side through holes at 500°C per 11.8 cm 2 of the end face on the outlet side containing the group of the outlet-side through holes is represented by Y(J/K), the relationship indicated by the following inequalities (1) and (2) is satisfied. 0.0157 X − 0.0678 Y 1.15 X − 5 35 ≤ X ≤ 60
    • 本发明的目的在于提供一种蜂窝结构体,该蜂窝结构体能够防止在再生过程中热应力集中在用于密封一组入口侧通孔及其附近的塞子上,并且因此防止 发生裂纹。 本发明的蜂窝结构体是主要由多孔陶瓷制成的柱状蜂窝结构体,其中多个通孔在长度方向上彼此平行地布置,并且隔离壁插入其间。 这里,通孔由一组入口侧通孔构成,其端部在出口侧由塞子密封,使得在垂直于长度方向的截面上的总面积相对较大,并且一组 的出口侧通孔,其端部通过入口侧的塞子密封,使得其横截面上的总面积相对较小。 设入口侧的开口率为X(%),将出口侧的端面的每11.8cm 2以500℃密封入口侧贯通孔组的塞子的热容量的总和 包含出口侧通孔的组由Y(J / K)表示时,满足由以下不等式(1)和(2)表示的关系。 0.0157X-0.0678