公开(公告)号：US5972830A

公开(公告)日：1999-10-26

申请号：US570611

申请日：1995-12-11

申请人： Takeru Yoshida ,  Mikio Murachi ,  Shinji Tsuji ,  Norio Taguchi

发明人： Takeru Yoshida ,  Mikio Murachi ,  Shinji Tsuji ,  Norio Taguchi

IPC分类号： B01D53/86 ,  B01D53/94 ,  B01J21/04 ,  B01J23/02 ,  B01J23/04 ,  B01J23/10 ,  B01J23/58 ,  B01J35/10 ,  B01J37/03

CPC分类号： B01D53/9481 ,  B01D53/945 ,  B01J23/04 ,  B01J23/10 ,  B01J23/58 ,  B01J37/033 ,  B01J35/10 ,  Y02C20/10 ,  Y02T10/22

摘要： This catalyst support aims to improve heat resistant and durability by highly dispersing an NO.sub.x storage component. This catalyst support is produced by mixing a solution of a chemical compound including at least one element of alkali metals, alkaline-earth metals, and rare-earth elements with a solution of oxide sol of at least one metal of group IIIb, group IVa, and group IVb in the periodic table to prepare a mixed sol solution, forming the mixed sol solution into gel, and drying and calcining the gel. The obtained catalyst support is amorphous and attains a high specific surface area even when calcined at elevated temperatures, so that the catalyst support is superior in heat resistance.

摘要翻译： 该催化剂载体旨在通过高度分散NO x储存组分来改善耐热性和耐久性。 该催化剂载体通过将包含至少一种碱金属，碱土金属和稀土元素的化合物的溶液与IIIb族，Ⅳa族，Ⅳa族至少一种金属的氧化物溶液的溶液混合来制备， 和周期表IVb组，制备混合溶胶溶液，将混合溶胶溶液形成凝胶，干燥和煅烧凝胶。 所获得的催化剂载体是无定形的，并且即使在升高的温度下煅烧也获得高比表面积，使得催化剂载体的耐热性优异。

公开(公告)号：US5294393A

公开(公告)日：1994-03-15

申请号：US941308

申请日：1992-09-04

申请人： Kazuyuki Toki ,  Mikio Murachi ,  Norio Taguchi

发明人： Kazuyuki Toki ,  Mikio Murachi ,  Norio Taguchi

IPC分类号： B28B1/00 ,  B28B1/24 ,  B28B1/26 ,  B28B13/02 ,  C04B35/584 ,  C04B35/632 ,  B29C43/02

CPC分类号： C04B35/584 ,  B28B1/265 ,  B28B13/021 ,  C04B35/632

摘要： A shaped body is molded from fine particles such as powder, whiskers and short fibers, by preparing a slurry consisting of the fine particles and a supercritical fluid containing a small amount of binder dissolved therein, and supplying the slurry into a mold cavity through an inlet port, so that the fine particles suspended in the supercritical fluid are stacked in the cavity to form a layer as the supercritical fluid is exhausted out of the mold cavity through an outlet port.

摘要翻译： 通过制备由细颗粒和含有少量粘合剂溶解的超临界流体组成的浆料，通过粉末，晶须和短纤维等细颗粒成形成型体，并通过入口将浆料供给到模腔中 端口，使得悬浮在超临界流体中的细颗粒堆叠在空腔中以形成层，因为超临界流体通过出口端排出模腔。

公开(公告)号：US5866500A

公开(公告)日：1999-02-02

申请号：US508328

申请日：1995-07-27

申请人： Norio Taguchi ,  Juji Suzuki

发明人： Norio Taguchi ,  Juji Suzuki

IPC分类号： B01D53/86 ,  B01D53/94 ,  B01J23/40 ,  B01J23/42 ,  B01J23/44 ,  B01J23/46 ,  B01J23/89 ,  B01J27/22 ,  B01J37/00 ,  B01J37/02

CPC分类号： B01D53/945 ,  B01J23/40 ,  B01J23/89 ,  B01J37/0018 ,  B01J37/0201 ,  B01J37/0203 ,  Y02T10/22

摘要： A process for producing an exhaust-gas-purifying catalyst includes the steps of immersing a porous support into a solution including a noble metal catalyst ingredient, thereby preparing a support with a noble metal catalyst ingredient loaded thereon, and thermally treating the noble-metal-catalyst-ingredient-loaded support at a temperature of 800.degree. C. or more in non-oxidizing atmosphere. In the thermally-treating step, the noble metal catalyst ingredient is prevented from being oxidized to its oxide, and accordingly it is inhibited from migrating in vapor phase. Further, in the thermally-treating step, pores of the porous support are contracted so that they surround the noble metal catalyst ingredient closely therein. All in all, the noble metal catalyst ingredient is prevented from sintering. Thus, the resulting exhaust-gas-purifying catalyst is of superb heat-resistance, and it can be applied to elevated temperatures of 800.degree. C. or more in fuel-lean atmosphere.

摘要翻译： 废气净化催化剂的制造方法包括以下步骤：将多孔质载体浸渍到包含贵金属催化剂成分的溶液中，由此制备负载有贵金属催化剂成分的载体，并对贵金属 - 催化剂成分负载的载体在非氧化性气氛中在800℃以上的温度下进行。 在热处理工序中，可以防止贵金属催化剂成分被氧化成氧化物，因此抑制其气相迁移。 此外，在热处理步骤中，多孔载体的孔收缩，使得它们紧密包围贵金属催化剂成分。 总而言之，防止贵金属催化剂成分烧结。 因此，所得到的废气净化催化剂具有极好的耐热性，并且可以在燃料贫乏的气氛中应用于800℃以上的高温。