公开(公告)号：US6103660A

公开(公告)日：2000-08-15

申请号：US55908

申请日：1998-04-07

申请人： Renee Van Yperen ,  Dieter Lindner ,  Lothar Mussmann ,  Egbert Lox ,  Thomas Kreuzer

发明人： Renee Van Yperen ,  Dieter Lindner ,  Lothar Mussmann ,  Egbert Lox ,  Thomas Kreuzer

IPC分类号： B01J21/16 ,  B01J23/58 ,  B01J23/63 ,  B01J37/02 ,  B01J37/03 ,  B01J23/40

CPC分类号： B01J37/035 ,  B01J23/63 ,  B01J37/0234 ,  B01J37/031

摘要： A method of depositing catalytically active components on high-surface carrier materials is disclosed by dispersing the carrier materials in water and mixing this dispersion with an aqueous solution of soluble precursors of the catalytically active components. The pH of the dispersion is adjusted to a value between 6 and 8 before the aqueous solution of the precursors is supplied by capillary injection under constant agitation of the dispersion and thereafter, if necessary, the precursors of the catalytically active components are precipitated on the carrier material by capillary injection of a dilute base.

摘要翻译： 通过将载体材料分散在水中并将该分散体与催化活性组分的可溶性前体的水溶液混合来公开在高表面载体材料上沉积催化活性组分的方法。 在不断搅拌分散体之前，通过毛细管注入前体的水溶液，然后如果需要，催化活性组分的前体在载体上沉淀，将分散体的pH调节至6至8之间的值 材料通过毛细管注入稀碱。

公开(公告)号：US06576207B1

公开(公告)日：2003-06-10

申请号：US09056795

申请日：1998-04-08

申请人： Lothar Mussmann ,  Renee Van Yperen ,  Dieter Lindner ,  Thomas Kreuzer ,  Egbert Lox

发明人： Lothar Mussmann ,  Renee Van Yperen ,  Dieter Lindner ,  Thomas Kreuzer ,  Egbert Lox

IPC分类号： B01J800

CPC分类号： B01D53/945 ,  B01D2255/908 ,  B01J20/06 ,  B01J21/06 ,  B01J21/066 ,  B01J23/10 ,  B01J35/1014 ,  B01J37/0201 ,  B01J37/031 ,  C01B13/02 ,  Y02T10/22

摘要： An oxygen storing material with high thermal stability is disclosed which contains cerium oxide and at least one stabilizer from the group praseodymium oxide, lanthanum oxide, yttrium oxide and neodymium oxide, wherein the stabilizer(s) and optionally cerium oxide are present in highly dispersed form on the specific surface area of a high surface area support material from the group aluminum oxide, zirconium oxide, titanium oxide, silicon dioxide, cerium oxide and mixed oxides thereof and the oxygen storing material still has a specific surface area of more than 20, preferably more than 30 m2/g, after calcination in air at 900° C. for a period of 10 hours.

摘要翻译： 公开了一种具有高热稳定性的储氧材料，其含有氧化铈和至少一种氧化镨，氧化镧，氧化钇和氧化钕的稳定剂，其中稳定剂和任选的氧化铈以高分散形式存在 在氧化铝，氧化锆，氧化钛，二氧化硅，氧化铈及其混合氧化物的高表面积载体材料的比表面积上，氧储存材料的比表面积优选为20以上， 在900℃下在空气中煅烧10小时后，超过30m 2 / g。

公开(公告)号：US06348430B1

公开(公告)日：2002-02-19

申请号：US09100251

申请日：1998-06-19

申请人： Dieter Lindner ,  Renee Van Yperen ,  Lothar Mussmann ,  Egbert Lox ,  Thomas Kreuzer

发明人： Dieter Lindner ,  Renee Van Yperen ,  Lothar Mussmann ,  Egbert Lox ,  Thomas Kreuzer

IPC分类号： B01J2106

CPC分类号： B01D53/945 ,  B01J23/63 ,  B01J37/0244 ,  Y02T10/22 ,  Y10S502/514

摘要： A catalyst for treating the exhaust gas from internal combustion engines is provided, wherein the catalyst contains two catalytically active layers supported on a support. The first catalytically active layer contains a platinum group metal in close contact with all of the constituents of the first catalytically active layer, wherein the constituents of the first catalytically active layer include particulate aluminum oxide; particulate oxygen storage material, such as cerium oxide, cerium/zirconium and zirconium/cerium mixed oxides, and alkaline earth metal oxides. The second catalytically active layer, which is in direct contact with the exhaust gas, contains particulate aluminum oxide and at least one particulate oxygen storage material, such as cerium oxide, cerium/zirconium and zirconium/cerium mixed oxides. Rhodium is supported on part of the aluminum oxides in the second catalytically active layer or on the particulate oxygen storage material in the second catalytically active layer. By providing the platinum group metal in close contact with all of the constituents of the first catalytically active layer, improved conversion efficiency of the impurities in the exhaust gas can be achieved.

摘要翻译： 提供了一种用于处理来自内燃机的废气的催化剂，其中催化剂含有两个负载在载体上的催化活性层。 第一催化活性层包含与第一催化活性层的所有成分紧密接触的铂族金属，其中第一催化活性层的组分包括颗粒状氧化铝; 颗粒状储氧材料，如氧化铈，铈/锆和锆/铈混合氧化物和碱土金属氧化物。 与废气直接接触的第二催化活性层含有颗粒状氧化铝和至少一种颗粒状储氧材料，例如氧化铈，铈/锆和锆/铈混合氧化物。 铑负载在第二催化活性层中的一部分氧化铝上或第二催化活性层中的颗粒储氧材料上。 通过提供与第一催化活性层的所有成分紧密接触的铂族金属，可以实现废气中杂质的转化效率的提高。

公开(公告)号：US6080375A

公开(公告)日：2000-06-27

申请号：US967984

申请日：1997-11-12

申请人： Lothar Mussmann ,  Dieter Lindner ,  Renee Van Yperen ,  Egbert Lox ,  Thomas Kreuzer

发明人： Lothar Mussmann ,  Dieter Lindner ,  Renee Van Yperen ,  Egbert Lox ,  Thomas Kreuzer

IPC分类号： B01D53/94 ,  B01J23/63 ,  B01J29/068 ,  B01J29/08 ,  B01J29/12 ,  B01J29/40 ,  B01J29/44 ,  B01J29/80 ,  B01J37/02 ,  F01N3/28 ,  B01J8/02

CPC分类号： B01D53/945 ,  B01D53/944 ,  B01J23/63 ,  B01J29/068 ,  B01J37/0246 ,  F01N3/2803 ,  B01D2255/902 ,  B01J29/084 ,  B01J29/40 ,  B01J29/80 ,  F01N2370/04 ,  F01N2570/12 ,  Y02T10/22

摘要： An exhaust gas purification catalyst with improved hydrocarbon conversion is disclosed, which contains metals from the platinum group as its catalytically active components. Two superposed functional layers are applied to one support. The catalyst has a first functional layer with a mixture of a first catalyst with at least one zeolite and the second functional layer applied to the first functional layer which contains a mixture of a second catalyst and at least one zeolite. The zeolites exhibit a molar ratio of silicon dioxide/aluminum oxide of more than 40 and in that at least palladium and rhodium are present as the platinum group metals and are each contained separately from one another in only one of the two catalysts. The catalyst is distinguished by particularly good suppression of hydrocarbon emissions during cold-starting and exhibits particularly good long-term stability.

摘要翻译： 公开了一种具有改进的烃转化率的废气净化催化剂，其包含来自铂族的金属作为其催化活性组分。 两个叠加的功能层被应用于一个支撑。 催化剂具有第一功能层，其具有第一催化剂与至少一种沸石的混合物，第二功能层施加到含有第二催化剂和至少一种沸石的混合物的第一功能层。 沸石表现出二氧化硅/氧化铝的摩尔比大于40，并且至少钯和铑作为铂族金属存在，并且在两种催化剂中的仅一种中彼此分开包含。 催化剂的特征在于在冷起动期间特别好的碳氢化合物排放的抑制，并且具有特别好的长期稳定性。

公开(公告)号：US06180075B2

公开(公告)日：2001-01-30

申请号：US09056641

申请日：1998-04-08

申请人： Dieter Lindner ,  Lothar Mussmann ,  Renee Van Yperen ,  Thomas Kreuzer ,  Egbert Lox

发明人： Dieter Lindner ,  Lothar Mussmann ,  Renee Van Yperen ,  Thomas Kreuzer ,  Egbert Lox

IPC分类号： B01J802

CPC分类号： B01D53/945 ,  B01J23/63 ,  B01J23/894 ,  B01J23/8946 ,  Y02T10/22

摘要： A single-layered three-way catalytic converter containing palladium as the only catalytically active noble metal, with high activity and heat resistance. The catalyst contains, in addition to finely divided, stabilized aluminum oxide, at least one finely divided cerium/zirconium mixed oxide and optionally finely divided nickel oxide as well as highly dispersed amounts of cerium oxide, zirconium oxide and barium oxide. The palladium is distributed largely uniformly throughout the entire catalyst.

摘要翻译： 包含钯作为唯一催化活性贵金属的单层三元催化转化器，具有高活性和耐热性。 除了细分散的稳定化的氧化铝之外，催化剂还含有至少一种细碎的铈/锆混合氧化物和任选的细碎的氧化镍以及高分散量的氧化铈，氧化锆和氧化钡。 钯在整个催化剂中大部分均匀分布。