公开(公告)号：US20110120093A1

公开(公告)日：2011-05-26

申请号：US12989264

申请日：2009-03-21

Applicant: Stephan Eckhoff ,  Paul Spurk ,  Lothar Mussmann ,  Wilfried Muleller

Inventor： Stephan Eckhoff ,  Paul Spurk ,  Lothar Mussmann ,  Wilfried Muleller

IPC: F01N3/035

CPC classification number: F01N3/0231 ,  F01N3/035 ,  F01N3/0814 ,  F01N3/0821 ,  F01N3/106 ,  F01N3/2066 ,  F01N13/009 ,  F01N2610/02 ,  Y02T10/24

Abstract: The present invention relates to a process for purifying NOx-containing exhaust gases formed in an internal combustion engine. In particular, the invention is directed at the purification of exhaust gases from an engine which produces a lean-burn exhaust gas, e.g. a diesel engine or a spark-ignition engine operated under lean conditions. Furthermore, the present invention relates to an appropriately equipped exhaust gas purification apparatus. The apparatus proposes a sequence of different catalysts for purifying primary axhaust gas of lean-burn engines, in which an oxidatively active particle filter (1) is followed by an oxidation catalyst (2) and this is in turn followed by an SCR catalyst, (3c) with the latter being arranged downstream of an addition of reducing agent (3a) located downstream of the oxidation catalyst (2).

Abstract translation: 本发明涉及一种净化形成在内燃机中的含NO x废气的方法。 特别地，本发明涉及净化来自发动机的废气，其产生贫燃废气，例如， 柴油发动机或在精细条件下运行的火花点火发动机。 此外，本发明涉及适当配备的废气净化装置。 该装置提出了用于净化贫燃发动机的主要废气的不同催化剂的序列，其中氧化活性颗粒过滤器（1）之后是氧化催化剂（2），然后是SCR催化剂（ 3c），后者位于加入位于氧化催化剂（2）下游的还原剂（3a）的下游。

公开(公告)号：US07238639B2

公开(公告)日：2007-07-03

申请号：US09931162

申请日：2001-08-17

Applicant: Lothar Mussmann ,  Dieter Lindner ,  Martin Votsmeier ,  Egbert Lox ,  Thomas Kreuzer

Inventor： Lothar Mussmann ,  Dieter Lindner ,  Martin Votsmeier ,  Egbert Lox ,  Thomas Kreuzer

IPC: B01J23/00

CPC classification number: B01D53/945 ,  B01J23/10 ,  B01J35/1014 ,  B01J35/1019 ,  B01J37/03 ,  B01J37/18 ,  C01B13/02 ,  C01B13/0262 ,  C01B13/0281 ,  C01F17/0018 ,  C01P2002/52 ,  C01P2006/12 ,  Y02A50/2324 ,  Y02T10/22

Abstract: An oxygen storage material based on cerium oxide with at least one other oxide of the metals silicon and zirconium, wherein the cerium oxide and the other oxides are present in the form of a mixed oxide. The material is obtainable in that hydroxidic precursors of the mixed oxide are first prepared in a manner known per se using a wet-chemical route, these precursors are optionally dried at temperatures between 80 and 300° C. and the dried precursors are then treated under a hydrogen-containing atmosphere at a temperature between 600 and 900° C. for a period of 1 to 10 hours. The reductive thermal treatment endows the material with a greatly improved dynamic behavior as compared with conventional calcination in air.

Abstract translation: 一种基于氧化铈与金属硅和锆的至少一种其它氧化物的储氧材料，其中氧化铈和其它氧化物以混合氧化物的形式存在。 该材料可以以混合氧化物的氢氧化物前体首先以本身已知的方式使用湿化学途径制备，这些前体任选地在80-300℃的温度下干燥，然后将干燥的前体在 在600-900℃的温度下加入含氢气氛1至10小时。 与空气中的常规煅烧相比，还原热处理赋予材料大大改善的动态特性。

公开(公告)号：US06350421B1

公开(公告)日：2002-02-26

申请号：US09378693

申请日：1999-08-23

Applicant: Wolfgang Strehlau ,  Ulrich Göbel ,  Lothar Mussmann ,  Rainer Domesle

Inventor： Wolfgang Strehlau ,  Ulrich Göbel ,  Lothar Mussmann ,  Rainer Domesle

IPC: B01D5392

CPC classification number: F01N3/0864 ,  B01D53/9422 ,  B01D2255/1021 ,  B01D2255/1025 ,  B01D2255/2042 ,  B01D2255/2045 ,  B01D2255/2066 ,  B01D2255/2068 ,  B01D2255/20707 ,  B01D2255/407 ,  B01D2255/9207 ,  B01J23/02 ,  B01J23/10 ,  B01J23/63 ,  B01J35/023 ,  B01J37/03 ,  F01N3/0807 ,  F01N3/0842 ,  Y10S502/514

Abstract: A nitrogen oxide storage material is disclosed which contains at least one storage component for nitrogen oxides in the form of an oxide, mixed oxide, carbonate or hydroxide of the alkaline earth metals magnesium, calcium, strontium and barium and the alkali metals potassium and caesium on a high surface area support material. The support material can be doped cerium oxide, cerium/zirconium mixed oxide, calcium titanate, strontium titanate, barium titanate, barium stannate, barium zirconate, magnesium oxide, lanthanum oxide, praseodymium oxide, samarium oxide, neodymium oxide, yttrium oxide, zirconium silicate, yttrium barium cuprate, lead titanate, tin titanate, bismuth titanate, lanthanum cobaltate, lanthanum manganate and barium cuprate or mixtures thereof.

Abstract translation: 公开了一种氮氧化物储存材料，其含有至少一种以碱土金属镁，钙，锶和钡的氧化物，混合氧化物，碳酸盐或氢氧化物形式的氮氧化物和碱金属钾和铯的形式的储存组分 高表面积的支撑材料。 载体材料可以掺杂氧化铈，铈/锆混合氧化物，钛酸钙，钛酸锶，钛酸钡，锡酸钡，锆酸钡，氧化镁，氧化镧，氧化镨，氧化钐，氧化钕，氧化钇，硅酸锆 ，钇钡铜酸盐，钛酸铅，钛酸钇，钛酸铋，钴酸镧，锰酸镧和铜酸钡或其混合物。

公开(公告)号：US06180075B2

公开(公告)日：2001-01-30

申请号：US09056641

申请日：1998-04-08

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

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

IPC: B01J802

CPC classification number: B01D53/945 ,  B01J23/63 ,  B01J23/894 ,  B01J23/8946 ,  Y02T10/22

Abstract: 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.

Abstract translation: 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。

公开(公告)号：US20110000189A1

公开(公告)日：2011-01-06

申请号：US12808088

申请日：2008-12-12

Applicant: Lothar Mussmann ,  Ingo Lappas ,  Andreas Geisselmann ,  Wilfried Mueller

Inventor： Lothar Mussmann ,  Ingo Lappas ,  Andreas Geisselmann ,  Wilfried Mueller

IPC: F01N3/00 ,  F01N3/10 ,  F01N11/00 ,  F01N3/035

CPC classification number: B01D53/9495 ,  B01D53/9418 ,  B01D53/9431 ,  B01D53/9477 ,  B01D2251/2062 ,  B01D2251/2067 ,  B01D2255/1021 ,  B01D2255/1023 ,  B01D2255/20738 ,  B01D2255/407 ,  B01D2255/50 ,  B01D2255/91 ,  B01D2257/404 ,  B01D2258/012 ,  F01N3/035 ,  F01N3/0814 ,  F01N3/0842 ,  F01N3/0885 ,  F01N3/2006 ,  F01N3/208 ,  F01N13/009 ,  F01N2240/02 ,  F01N2560/026 ,  F01N2560/06 ,  F01N2610/02 ,  Y02A50/2325 ,  Y02T10/24 ,  Y02T10/26

Abstract: The adherence to future legally obligatory exhaust gas limit values for diesel vehicles in Europe, North America and Japan requires not only the removal of particles but also effective removal of nitrogen oxides from the exhaust gas (‘deNOx’). The ‘active SCR process’ is the preferred method for this. The nitrogen oxide conversions achieved by means of this process are particularly high when an optimal NO2/NOx ratio, preferably 0.5, is set upstream of the SCR catalyst. The invention proposes a process which solves the problem of supplying NO2 in accordance with requirements by means of temperature control of the precatalyst which is decoupled from the operating state of the engine. In an associated apparatus, a precatalyst (1) which contains at least one oxidation component and whose temperature can be controlled independently of the operating state of the engine and an active SCR stage comprising an SCR catalyst (3c) with upstream metering facility (3b) for a reducing agent from an external source (3a) are arranged in series. A particle filter (2) can be arranged between precatalyst and metering facility. The precatalyst preferably additionally contains a nitrogen oxide storage material.

Abstract translation: 欧洲，北美和日本的柴油车辆遵守未来法定义务的废气限值不仅需要除去颗粒物，而且还要有效地从废气中除去氮氧化物（“脱硝”）。 “主动SCR过程”是其中的首选方法。 当在SCR催化剂的上游设置最佳NO 2 / NO x比，优选0.5时，通过该方法实现的氮氧化物转化率特别高。 本发明提出了一种解决根据需要通过与发动机的运行状态分离的预催化剂的温度控制来供应NO 2的问题的方法。 在相关设备中，包含至少一种氧化组分并且可以独立于发动机的运行状态控制温度的预催化剂（1）和包括具有上游计量设备（3b）的SCR催化剂（3c）的主动SCR级， 用于来自外部源（3a）的还原剂被串联布置。 颗粒过滤器（2）可以布置在预催化剂和计量设备之间。 预催化剂优选另外含有氮氧化物储存材料。

公开(公告)号：US20100166628A1

公开(公告)日：2010-07-01

申请号：US12301752

申请日：2007-02-15

Applicant: Nicola Soeger ,  Wolfgang Schneider ,  Yvonne Demel ,  Lothar Mussmann ,  Ralf Sesselmann ,  Thomas Kreuzer

Inventor： Nicola Soeger ,  Wolfgang Schneider ,  Yvonne Demel ,  Lothar Mussmann ,  Ralf Sesselmann ,  Thomas Kreuzer

IPC: B01D53/54 ,  B01J29/88 ,  B01J29/072 ,  B01D50/00

CPC classification number: B01D53/9418 ,  B01D53/945 ,  B01D2255/102 ,  B01D2255/20723 ,  B01D2255/20738 ,  B01D2255/20761 ,  B01D2255/20769 ,  B01D2255/20776 ,  B01D2255/50 ,  B01D2255/9022 ,  B01D2258/012 ,  B01J23/42 ,  B01J29/072 ,  B01J35/0006 ,  B01J35/04 ,  B01J37/0244 ,  Y02T10/22 ,  Y02T10/24

Abstract: In exhaust gas purification units for decreasing nitrogen oxides in lean-burn exhaust gas of internal combustion engines by selective catalytic reduction by means of ammonia, introduction of excess ammonia leads to undesirable emissions of unused ammonia. These emissions can be decreased by means of ammonia barrier catalysts. In the ideal case, ammonia is oxidized to nitrogen and water by these catalysts. These require additional space in the exhaust gas purification unit which may have to be taken away from the space provided for the SCR main catalyst. In addition, the use of such ammonia barrier catalysts can result in overoxidation of the ammonia to nitrogen oxides.To overcome these disadvantages, a catalyst containing two superposed layers is proposed for the removal of nitrogen-containing pollutant gases from diesel exhaust gas. The lower layer contains an oxidation catalyst and the upper layer can store at least 20 milliliters of ammonia per gram of catalyst material. This catalyst displays reduced ammonia breakthrough at good SCR conversions in the low-temperature range. It can be used as SCR catalyst having reduced ammonia breakthrough or as ammonia barrier catalyst.

Abstract translation: 在用于通过氨的选择性催化还原来减少内燃机的贫燃废气中的氮氧化物的废气净化单元中，引入过量的氨会导致不期望的未使用的氨的排放。 这些排放物可以通过氨阻隔催化剂降低。 在理想情况下，这些催化剂将氨氧化成氮和水。 这些在废气净化单元中需要额外的空间，其可能必须从为SCR主催化剂提供的空间中取走。 此外，使用这种氨阻挡催化剂可导致氨对氮氧化物的过氧化。 为了克服这些缺点，提出了一种含有两个重叠层的催化剂，用于从柴油机废气中去除含氮污染物。 下层含有氧化催化剂，上层可以存储至少20毫升氨/克催化剂材料。 该催化剂在低温范围内以良好的SCR转化率显示出降低的氨渗透。 它可以用作具有减少的氨穿透或作为氨阻挡催化剂的SCR催化剂。

公开(公告)号：US20100034717A1

公开(公告)日：2010-02-11

申请号：US12444312

申请日：2007-09-17

Applicant: Katja Adelmann ,  Nicola Soeger ,  Lothar Mussmann ,  Marcus Pfeifer ,  Gerald Jeske

Inventor： Katja Adelmann ,  Nicola Soeger ,  Lothar Mussmann ,  Marcus Pfeifer ,  Gerald Jeske

IPC: B01D53/94 ,  B01J23/10 ,  B01J27/02 ,  B01J27/051 ,  B01J27/047 ,  B01J27/045 ,  B01J27/043 ,  B01D53/56

CPC classification number: B01J23/002 ,  B01D53/9418 ,  B01D2251/2062 ,  B01D2255/2063 ,  B01D2255/20769 ,  B01D2255/20776 ,  B01D2255/20784 ,  B01D2255/407 ,  B01D2255/9155 ,  B01J23/10 ,  B01J23/24 ,  B01J23/30 ,  B01J23/888 ,  B01J27/04 ,  B01J37/0201 ,  B01J37/0248 ,  B01J2523/00 ,  B01J2523/3706 ,  B01J2523/3712 ,  B01J2523/48 ,  Y02A50/2325 ,  Y02T10/24 ,  B01J2523/69 ,  B01J2523/842

Abstract: Selective catalytic reduction with ammonia or a compound that decomposes to ammonia is a known method for the removal of nitrogen oxides from the exhaust gas of primarily lean-burn internal combustion engines. The vanadium-containing SCR catalysts that have long been generally used for this are characterized by a good conversion profile. However, the volatility of vanadium oxide can, at higher exhaust gas temperatures, lead to the emission of toxic vanadium compounds. Zeolite-based SCR catalysts, which are used in particular in discontinuous SCR systems, constitute a very cost-intensive solution for the problem.A method is proposed by which a homogeneous cerium-zirconium mixed oxide is activated for the SCR reaction in a defined manner by the introduction of sulphur and/or transition metal. Using this method, a highly active, ageing-resistant SCR catalyst is provided, which represents a vanadium-free, cost-effective and high-performance alternative to the existing SCR catalysts and is suitable in particular for use in motor vehicles.

Abstract translation: 用氨或分解成氨的化合物进行选择性催化还原是从主要贫燃内燃机的废气中除去氮氧化物的已知方法。 长期以来一般使用的含钒SCR催化剂的特征在于良好的转化率。 然而，在更高的废气温度下，氧化钒的挥发性会导致有毒的钒化合物的排放。 特别是在不连续SCR系统中使用的基于沸石的SCR催化剂构成了该问题的非常成本高的解决方案。 提出了一种通过引入硫和/或过渡金属以规定的方式使均相铈锆混合氧化物活化用于SCR反应的方法。 使用这种方法，提供了高活性，耐老化的SCR催化剂，其代表了现有SCR催化剂的无钒，成本效益和高性能替代物，并且特别适用于机动车辆。

公开(公告)号：US20080075646A1

公开(公告)日：2008-03-27

申请号：US11774281

申请日：2007-07-06

Applicant: Lothar Mussmann ,  Nicola Soger ,  Ralf Sesselmann ,  Katja Adelmann ,  Wolfgang Schneider

Inventor： Lothar Mussmann ,  Nicola Soger ,  Ralf Sesselmann ,  Katja Adelmann ,  Wolfgang Schneider

IPC: B01J35/00 ,  B01D53/94

CPC classification number: F01N3/2807 ,  B01D53/9418 ,  B01D53/945 ,  B01D2255/20738 ,  B01D2255/20761 ,  B01D2255/50 ,  B01D2255/902 ,  B01J29/072 ,  B01J33/00 ,  B01J37/0244 ,  B01J37/0246 ,  F01N3/2828 ,  Y02A50/2324 ,  Y02A50/2325 ,  Y02T10/22

Abstract: Structured automotive catalysts which comprise a plurality of different catalytically active coatings arranged above one another on a support body and whose coatings contain transition metals and porous support materials are well known. Structured automotive catalysts of this type which do not belong to the group of three-way catalysts, in particular, frequently display large selectivity losses after thermal aging processes which can be attributed to the thermally induced migration of transition metal atoms from one layer into the neighbouring coating. The introduction of a diffusion barrier which slows or prevents the thermally induced migration of transition metal atoms from one catalytically active layer into the other increases the thermal aging stability of such catalysts significantly

Abstract translation: 包含多个不同催化活性涂层的结构化汽车催化剂是众所周知的，所述催化活性涂层在支撑体上相互排列并且其涂层含有过渡金属和多孔载体材料。 特别是不属于三元催化剂组的结构型汽车催化剂，特别是在热老化过程之后经常显示出大的选择性损失，这可归因于过渡金属原子从一层到邻近的热诱导迁移 涂层。 扩散阻挡层的引入减缓或阻止了过渡金属原子从一个催化活性层向另一个催化活性层的热诱导迁移，从而提高了这些催化剂的热老化稳定性

公开(公告)号：US20060052243A1

公开(公告)日：2006-03-09

申请号：US11263353

申请日：2005-10-31

Applicant: Mamoun Muhammed ,  Othon Adamopoulos ,  Tassilo Bog ,  Lothar Mussmann ,  Dieter Lindner ,  Martin Votsmeier ,  Matthias Feger ,  Egbert Lox ,  Thomas Kreuzer

Inventor： Mamoun Muhammed ,  Othon Adamopoulos ,  Tassilo Bog ,  Lothar Mussmann ,  Dieter Lindner ,  Martin Votsmeier ,  Matthias Feger ,  Egbert Lox ,  Thomas Kreuzer

IPC: B01J23/00 ,  B01J23/10

CPC classification number: C01G25/00 ,  B01D53/945 ,  B01D2255/206 ,  B01D2255/908 ,  B01J23/002 ,  B01J23/10 ,  B01J37/03 ,  B01J2523/00 ,  B82Y30/00 ,  C01B13/0262 ,  C01B13/0281 ,  C01F17/0018 ,  C01F17/0043 ,  C01G25/006 ,  C01P2002/50 ,  C01P2002/60 ,  C01P2004/64 ,  C01P2006/12 ,  Y02T10/22 ,  B01J2523/23 ,  B01J2523/3712 ,  B01J2523/31 ,  B01J2523/48 ,  B01J2523/3706

Abstract: An oxygen storage material comprising cerium oxide and at least one second oxide of a metal M1 is disclosed as well as a process for manufacturing the material and the use of this material in an exhaust gas cleaning catalyst. In a preferred embodiment the oxygen storage material comprises particles from a Ce/M1 mixed oxide solid solution coated with an oxide of another metal M2. Metal M1 e.g. can be calcium or zirconium while metal M2 most preferably is aluminum.

Abstract translation: 公开了一种包含氧化铈和至少一种金属M 1 O 2的第二氧化物的储氧材料，以及用于制造材料的方法以及在废气清洁催化剂中使用该材料。 在优选的实施方案中，储氧材料包含涂覆有另一种金属M 2 O 2的氧化物的Ce / M 1混合氧化物固溶体的颗粒。 金属M 1，例如 可以是钙或锆，而金属M 2最优选是铝。

公开(公告)号：US06601381B2

公开(公告)日：2003-08-05

申请号：US09855743

申请日：2001-05-16

Applicant: Lothar Mussmann ,  Dieter Lindner ,  Martin Votsmeier ,  Joerg Michael Richter ,  Egbert Lox

Inventor： Lothar Mussmann ,  Dieter Lindner ,  Martin Votsmeier ,  Joerg Michael Richter ,  Egbert Lox

IPC: F01N300

CPC classification number: F02D41/222 ,  F01N11/007 ,  F01N2550/02 ,  F02D41/1441 ,  F02D41/1454 ,  F02D41/1495 ,  Y02T10/22 ,  Y02T10/40 ,  Y02T10/47

Abstract: A process for operating an exhaust gas treatment device in a gasoline engine which is operated mainly with a stoichiometric air/fuel ratio and is operated with a rich-mix air/fuel ratio when accelerating or under full load. The exhaust gas treatment device contains a three-way converter catalyst and a first lambda probe upstream of the catalyst and a second lambda probe downstream of the catalyst. The air/fuel ratio is controlled by using the signal from the first lambda probe, whereas the signal from the second lambda probe is used to check the first lambda probe (trim control) and to diagnose the function of the catalyst. Trim control with the second lambda probe is enabled only when, in the event of rich exhaust gas, the voltage difference between the probe voltage for the second lambda probe and a set point voltage is not larger than a predetermined value.