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：US06334986B1

公开(公告)日：2002-01-01

申请号：US09757581

申请日：2001-01-11

申请人： Jürgen Gieshoff ,  Hans Van Den Tillaart ,  Thomas Kreuzer ,  Egbert Lox ,  Jürgen Lang

发明人： Jürgen Gieshoff ,  Hans Van Den Tillaart ,  Thomas Kreuzer ,  Egbert Lox ,  Jürgen Lang

IPC分类号： B01D5358

摘要： The invention relates to a process for the selective catalytic reduction of the nitrogen oxides contained in a lean exhaust gas from internal combustion engines by reducing the nitrogen oxides by means of ammonia on a catalyst. The process is characterized in that, in addition to the lean exhaust gas, a rich gas stream is produced that is treated in an electrical gas discharge plasma in order to form the ammonia required for the reduction.

公开(公告)号：US06294140B1

公开(公告)日：2001-09-25

申请号：US09409744

申请日：1999-10-01

申请人： Lothar Mussmann ,  Dieter Lindner ,  Michael Harris ,  Thomas Kreuzer ,  Egbert Lox

发明人： Lothar Mussmann ,  Dieter Lindner ,  Michael Harris ,  Thomas Kreuzer ,  Egbert Lox

IPC分类号： B01D5394

CPC分类号： B01D53/945 ,  B01J23/58 ,  B01J23/63 ,  B01J35/04 ,  B01J37/0244 ,  B01J37/0248 ,  Y02T10/22 ,  Y10S502/514

摘要： A catalyst for treating exhaust gas from an internal combustion engine includes a carrier body coated with an inner layer and an outer layer. The inner layer includes platinum deposited on a first support material and on a first oxygen storage component, and the outer layer includes platinum and rhodium deposited on a second support material and on a second oxygen storage component. The first and second support materials may be the same or different, and may be selected from the group of: silica, alumina, titania, zirconia, mixed oxides or mixtures thereof, and zirconia-rich zirconia/ceria mixed oxide. The first and second oxygen storage components may include ceria-rich ceria/zirconia mixed oxide compounds, optionally including praseodymia, yttria, neodymia, lanthana or mixtures thereof.

摘要翻译： 用于处理来自内燃机的废气的催化剂包括涂覆有内层和外层的载体。 内层包括沉积在第一支撑材料上的铂和第一储氧部件，外层包括沉积在第二支撑材料上的铂和铑以及第二储氧部件。 第一和第二载体材料可以相同或不同，并且可以选自二氧化硅，氧化铝，二氧化钛，氧化锆，混合氧化物或其混合物，以及富含氧化锆的氧化锆/二氧化铈混合氧化物。 第一和第二氧气存储组分可以包括富铈氧化铈/氧化锆混合氧化物化合物，任选地包括镨，氧化钇，氧化钕，氧化镧或其混合物。

公开(公告)号：US06220022B1

公开(公告)日：2001-04-24

申请号：US09180112

申请日：1999-08-04

申请人： Wilfried Müller ,  Jürgen Leyrer ,  Rainer Domesle ,  Klaus Ostgathe ,  Egbert Lox ,  Thomas Kreuzer

发明人： Wilfried Müller ,  Jürgen Leyrer ,  Rainer Domesle ,  Klaus Ostgathe ,  Egbert Lox ,  Thomas Kreuzer

IPC分类号： F01N310

CPC分类号： B01D53/9454 ,  Y02T10/22

摘要： A catalyst system for the treatment of exhaust gases from a diesel engine includes a first and a second catalyst reducing catalyst arranged in series in an exhaust gas treatment system. The first catalyst is located near the engine in a region of the exhaust gas treatment system in which the exhaust gas temperature reaches temperatures of more than 200° C. under full engine load. The second catalyst is located further from the engine in a region of the exhaust gas treatment system in which the exhaust gas temperature reaches a maximum of 500° C. under full engine load. The maximum nitrogen oxides reduction in the first catalyst takes place at a lower temperature than the maximum nitrogen oxides reduction in the second catalyst.

摘要翻译： 用于处理来自柴油发动机的废气的催化剂系统包括在废气处理系统中串联布置的第一和第二催化剂还原催化剂。 第一催化剂位于排气处理系统的区域内的发动机附近，其中在全发动机负荷下，废气温度达到超过200℃的温度。 第二催化剂在排气处理系统的一个区域内比发动机更远，其中在全发动机负荷下废气温度达到最大值500℃。 第一催化剂中的最大氮氧化物还原在比第二催化剂中的最大氮氧化物还原更低的温度下进行。

公开(公告)号：US6089015A

公开(公告)日：2000-07-18

申请号：US078415

申请日：1998-05-14

申请人： Wolfgang Strehlau ,  Egbert Lox ,  Thomas Kreuzer ,  Jurgen Hohne

发明人： Wolfgang Strehlau ,  Egbert Lox ,  Thomas Kreuzer ,  Jurgen Hohne

IPC分类号： F01N3/08 ,  B01D53/86 ,  B01D53/94 ,  F01N3/28 ,  F01N3/00

CPC分类号： B01D53/9459 ,  B01D53/9418 ,  B01D53/9422 ,  B01D2251/204 ,  B01D2251/208 ,  B01D2255/1021 ,  B01D2255/1028 ,  B01D2255/2042 ,  B01D2255/2063 ,  B01D2255/20738 ,  B01D2255/20761 ,  B01D2255/50 ,  B01D2258/012 ,  B01D53/945 ,  B01D53/9477 ,  Y02T10/22 ,  Y02T10/24

摘要： A method of purifying the lean exhaust gas of lean mix engines or diesel engines. The exhaust gas is first contacted with a permanent reduction catalyst and subsequently contacted with a nitrogen oxide storage catalyst. This procedure yields a uniformly good conversion of pollutants of the exhaust gases under differing operating conditions both as regards the air ratios and the exhaust gas temperatures.

摘要翻译： 一种净化稀混合发动机或柴油发动机的贫废气的方法。 废气首先与永久性还原催化剂接触，然后与氮氧化物储存催化剂接触。 该方法在空气比和废气温度下，在不同的操作条件下均衡地得到排气污染物的均匀转化。

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：US5934073A

公开(公告)日：1999-08-10

申请号：US78597

申请日：1998-05-14

申请人： Jurgen Gieshoff ,  Egbert Lox ,  Thomas Kreuzer

发明人： Jurgen Gieshoff ,  Egbert Lox ,  Thomas Kreuzer

IPC分类号： F01N3/20 ,  F01N3/24 ,  F01N3/28 ,  F01N5/02 ,  F02G5/02 ,  F01N3/02

CPC分类号： F01N3/2046 ,  F01N3/2006 ,  F01N3/2033 ,  F01N3/2889 ,  F01N5/02 ,  F01N2240/02 ,  F01N2610/03 ,  Y02T10/16 ,  Y02T10/26

摘要： An auxiliary heating system for a motor vehicle with an internal combustion engine. The auxiliary heating includes an emission control catalyst and a heat exchanger, integrated in the converter housing in front of and/or behind the catalyst, which provides the reaction heat released by the catalyst and the remaining heat of the exhaust gas to the heating of the passenger compartment. The heat generation may be increased by the injection of a fuel/air mixture before the catalyst and by using the catalyst as a catalytic burner and can be adapted to the heat requirements. The auxiliary heating of the invention prevents possible thermal damage of the catalyst during operation as a catalytic burner without many regulating elements by cooling the catalyst radiation. For this purpose, the heat exchanger is provided with an exchange surface which can freely exchange radiation with the radiant surface of the catalytic element.

摘要翻译： 一种具有内燃机的汽车辅助加热系统。 辅助加热包括排放控制催化剂和热交换器，其集成在催化剂前面和/或后面的转化器壳体中，其提供由催化剂释放的反应热和排气的剩余热量加热到 乘客舱。 可以通过在催化剂之前注入燃料/空气混合物并且通过使用催化剂作为催化燃烧器并且可以适应于热需求来增加发热。 本发明的辅助加热在作为催化燃烧器的操作期间可防止催化剂的热损伤，而不需要许多调节元件来冷却催化剂辐射。 为此，热交换器设置有可以与催化元件的辐射表面自由交换辐射的交换表面。

公开(公告)号：US06145303A

公开(公告)日：2000-11-14

申请号：US276131

申请日：1999-03-25

申请人： Wolfgang Strehlau ,  Ulrich Gobel ,  Egbert Lox ,  Wilfried Muller ,  Rainer Domesle

发明人： Wolfgang Strehlau ,  Ulrich Gobel ,  Egbert Lox ,  Wilfried Muller ,  Rainer Domesle

IPC分类号： B01D53/86 ,  B01D53/94 ,  B01J21/16 ,  F01N3/08 ,  F01N3/10 ,  F01N3/20 ,  F01N3/24 ,  F01N3/28 ,  F01N9/00 ,  F01N13/02 ,  F02D41/14 ,  F01N3/00 ,  B01D47/00

CPC分类号： B01D53/9422 ,  B01D53/949 ,  F01N13/009 ,  F01N3/0814 ,  F01N3/0842 ,  F01N3/085 ,  F01N3/0871 ,  B01D2255/102 ,  B01D2255/202 ,  B01D2255/204 ,  B01D2255/2061 ,  B01D2255/2063 ,  B01D2255/91 ,  F01N2340/02 ,  Y02T10/22

摘要： A process is disclosed for operating an exhaust gas treatment unit for an internal combustion engine which is operated with lean normalized air/fuel ratios over most of the operating period. The exhaust gas treatment unit contains a nitrogen oxides storage catalyst with an activity window .DELTA.T.sub.NOX for the storage of nitrogen oxides at normalized air/fuel ratios of greater than 1 and release of the nitrogen oxides at normalized air/fuel ratios of less than or equal to 1 and a sulfur trap, located upstream of the nitrogen oxides storage catalyst, with a sulfur desorption temperature T.sub.S,DeSOx above which the sulfates stored on the sulfur trap are decomposed at normalized air/fuel ratios of less than or equal to 1. The nitrogen oxides contained in the exhaust gas are stored on the nitrogen oxides storage catalyst and the sulfur oxides are stored on the sulfur trap at normalized air/fuel ratios greater than 1 and exhaust gas temperatures T.sub.K within the activity window T.sub.NOX, wherein at the same time the exhaust gas temperature just upstream of the sulfur trap is lower than its sulfur desorption temperature T.sub.S,DeSOx. By cyclic lowering of the normalized air/fuel ratio in the exhaust gas to less than 1 the stored nitrogen oxides are released again from the storage catalyst. After each predetermined number N.sub.1 of nitrogen oxides storage cycles, sulfur is removed from the sulfur trap. This takes place by raising the exhaust gas temperature just upstream of the sulfur trap to above its sulfur desorption temperature T.sub.S,DeSOx and also lowering the normalized air/fuel ratio in the exhaust gas to less than 1.

摘要翻译： 公开了一种用于操作用于内燃机的排气处理单元的方法，该内燃机在大部分操作周期内以精简的归一化空气/燃料比操作。 废气处理单元包含具有活性窗口DELTA TNOX的氮氧化物存储催化剂，用于在标准化的空气/燃料比大于1时储存氮氧化物，并且在标准化的空气/燃料比小于或等于 至1和位于氮氧化物储存催化剂上游的硫捕集器，具有硫解吸温度TS，DeSOx，其上储存在硫阱上的硫酸盐在标准化的空气/燃料比小于或等于1时分解。 废气中含有的氮氧化物被储存在氮氧化物储存催化剂上，硫氧化物以规定的大于1的空气/燃料比和废气温度TK存储在活性窗口TNOX内，其中同时 硫阱的上游排气温度低于其脱硫温度TS，DeSOx。 通过将排气中的归一化空气/燃料比循环降低到小于1，储存的氮氧化物再次从储存催化剂释放。 在氮氧化物存储循环的每个预定数量的N1之后，从硫阱中除去硫。 这通过将硫捕集器正好上游的废气温度提高到高于其硫解吸温度TS，DeSOx并且将排气中的归一化空气/燃料比降至小于1来进行。

公开(公告)号：US5628925A

公开(公告)日：1997-05-13

申请号：US413943

申请日：1995-03-30

申请人： Rainer Domesle ,  Bernd Engler ,  Egbert Lox

发明人： Rainer Domesle ,  Bernd Engler ,  Egbert Lox

IPC分类号： B01J35/04 ,  B01J37/02 ,  B21D47/00 ,  B23K26/26 ,  F01N3/28 ,  B23K26/00

CPC分类号： B23K26/26 ,  B01J35/04 ,  F01N3/281 ,  B23K2201/02

摘要： A method is disclosed for manufacturing a monolithic metal support with a coated, gas-permeable shaped body. The shaped body is formed of one or more smooth and/or corrugated metal foil strips previously coated with a dispersion coating. During or after formation of the shaped body, the metal foil strips are joined by soldering or welding to at least one adjacent metal foil strip or to at least one adjacent layer of the same metal foil strip.

摘要翻译： 公开了一种用于制造具有涂覆的气体可渗透成形体的整体式金属支撑件的方法。 成形体由预先涂覆有分散涂层的一个或多个平滑和/或波纹的金属箔带形成。 在成型体的形成期间或之后，通过焊接或焊接将金属箔带连接到至少一个相邻的金属箔条或至少相邻的金属箔条的相邻层。