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41. 发明授权

US07005116B2 Process for reducing nitrogen oxides 有权
标题翻译：还原氮氧化物的方法
公开(公告)号：US07005116B2
公开(公告)日：2006-02-28
申请号：US11037551
申请日：2005-01-18
申请人： Adolf Schäfer-Sindlinger , Marcus Pfeifer , Paul Spurk , Yvonne Demel , Thomas Kreuzer , Egbert Lox
发明人： Adolf Schäfer-Sindlinger , Marcus Pfeifer , Paul Spurk , Yvonne Demel , Thomas Kreuzer , Egbert Lox
IPC分类号： C01B21/20
CPC分类号： F01N3/2066 , B01D53/9418 , B01D53/9477 , B01D2251/2067 , B01D2255/2065 , B01D2255/20738 , B01D2255/20761 , B01D2255/504 , B01D2255/808 , B01J29/072 , B01J29/46 , B01J35/04 , B01J37/0215 , F01N2610/02 , Y02T10/24
摘要： A process for reducing the nitrogen oxides present in a lean exhaust gas from an internal combustion engine by selective catalytic reduction on a reduction catalyst using ammonia, wherein a fraction of the nitrogen monoxide present in the exhaust gas is oxidized to nitrogen dioxide before the exhaust gas, together with ammonia, is passed over the reduction catalyst. The reduction catalyst contains a zeolite exchanged with transition metals and oxidation of the nitrogen monoxide is performed in such a way that the exhaust gas contains 30 to 70 vol. % of nitrogen dioxide before contact with the reduction catalyst.
摘要翻译：一种通过使用氨在还原催化剂上选择性催化还原来还原来自内燃机的贫废气中存在的氮氧化物的方法，其中废气中存在的一氧化氮的一部分在排气之前被氧化成二氧化氮与氨一起通过还原催化剂。还原催化剂含有与过渡金属交换的沸石，一氧化氮的氧化以排气含有30〜70体积％与还原催化剂接触之前的二氧化氮的％。

42. 发明申请

US20050196333A1 Process and catalyst for reducing nitrogen oxides 有权
公开(公告)号：US20050196333A1
公开(公告)日：2005-09-08
申请号：US11037551
申请日：2005-01-18
申请人： Adolf Schafer-Sindlinger , Marcus Pfeifer , Paul Spurk , Yvonne Demel , Thomas Kreuzer , Egbert Lox
发明人： Adolf Schafer-Sindlinger , Marcus Pfeifer , Paul Spurk , Yvonne Demel , Thomas Kreuzer , Egbert Lox
IPC分类号： F01N3/08 , B01D53/34 , B01D53/56 , B01D53/74 , B01D53/86 , B01D53/94 , B01J8/02 , B01J21/00 , B01J23/80 , B01J29/06 , B01J29/064 , B01J29/072 , B01J29/076 , B01J29/46 , B01J35/04 , B01J37/02 , B01J37/30 , C01B21/00 , C01B21/04 , F01N3/10 , F01N3/20 , F01N3/28
CPC分类号： F01N3/2066 , B01D53/9418 , B01D53/9477 , B01D2251/2067 , B01D2255/2065 , B01D2255/20738 , B01D2255/20761 , B01D2255/504 , B01D2255/808 , B01J29/072 , B01J29/46 , B01J35/04 , B01J37/0215 , F01N2610/02 , Y02T10/24
摘要： A process for reducing the nitrogen oxides present in a lean exhaust gas from an internal combustion engine by selective catalytic reduction on a reduction catalyst using ammonia, wherein a fraction of the nitrogen monoxide present in the exhaust gas is oxidized to nitrogen dioxide before the exhaust gas, together with ammonia, is passed over the reduction catalyst. The reduction catalyst contains a zeolite exchanged with transition metals and oxidation of the nitrogen monoxide is performed in such a way that the exhaust gas contains 30 to 70 vol. % of nitrogen dioxide before contact with the reduction catalyst.

43. 发明授权

US06713031B2 Structured catalysts for selective reduction of nitrogen oxides by ammonia using a compound that can be hydrolyzed to ammonia 有权
标题翻译：使用可以水解成氨的化合物用氨选择性还原氮氧化物的结构化催化剂
公开(公告)号：US06713031B2
公开(公告)日：2004-03-30
申请号：US09851417
申请日：2001-05-09
申请人： Michael Harris , Jürgen Leyrer , Yvonne Demel , Egbert Lox , Thomas Kreuzer
发明人： Michael Harris , Jürgen Leyrer , Yvonne Demel , Egbert Lox , Thomas Kreuzer
IPC分类号： B01J800
CPC分类号： F01N3/2066 , B01D53/9431 , B01J21/063 , B01J21/066 , B01J23/20 , B01J23/30 , F01N3/2803 , F01N2240/40 , F01N2510/06 , F01N2610/02 , Y02A50/2325 , Y02T10/24
摘要： A structured catalyst for selective reduction of nitrogen oxides with ammonia using an ammonia-supplying compound. The catalyst is preferably used for exhaust gas treatment of diesel vehicles powered by diesel motors. The catalyst is characterized by the fact that it contains a reduction catalyst for selective reduction of nitrogen oxides with ammonia and a hydrolysis catalyst for the hydrolysis of urea, where the hydrolysis catalyst is applied in the form of a coating onto the reduction catalyst. By this arrangement of the two catalytic functions in one catalyst the exhaust gas system can be made very compactly and space saving. Moreover, advantageous synergistic effects result from the direct contact of the hydrolysis catalyst and the reduction catalyst.
摘要翻译：使用氨供应化合物用氨选择性还原氮氧化物的结构化催化剂。该催化剂优选用于由柴油发动机驱动的柴油车辆的废气处理。催化剂的特征在于它含有用氨选择性还原氮氧化物的还原催化剂和用于水解尿素的水解催化剂，其中水解催化剂以涂层的形式施加到还原催化剂上。通过在一个催化剂中这两种催化功能的排列，可以使废气系统非常紧凑和节省空间。此外，由于水解催化剂和还原催化剂的直接接触，有利的协同效应。

44. 发明授权

US06342465B1 Process for preparing a catalyst 有权
标题翻译：催化剂的制备方法
公开(公告)号：US06342465B1
公开(公告)日：2002-01-29
申请号：US09205280
申请日：1998-12-04
申请人： Harald Klein , Jürgen Leyrer , Rainer Domesle , Egbert Lox , Thomas Kreuzer
发明人： Harald Klein , Jürgen Leyrer , Rainer Domesle , Egbert Lox , Thomas Kreuzer
IPC分类号： B01J2342
CPC分类号： B01J23/40 , B01J37/0248
摘要： A process for preparing a catalyst which has a catalytically active coating of high surface area finely divided materials and catalytically active components on an inert carrier structure. A powder mixture of the finely divided materials used is impregnated with a solution of precursor compounds of the catalytically active components. By suitable combination of the finely divided materials and the precursor compounds and appropriate management of the impregnation process, a highly dispersed deposition and adsorption of the catalytically active components is ensured on the finely divided materials. Then ai aqueous coating dispersion is produced using the impregnated powder mixture and the carrier structure is coated therewith. The coating is then dried and calcined.
摘要翻译：一种在惰性载体结构上制备具有高表面积细碎材料和催化活性组分的催化活性涂层的催化剂的方法。所使用的细碎材料的粉末混合物用催化活性组分的前体化合物的溶液浸渍。通过精细分散的材料和前体化合物的合适组合以及浸渍过程的适当管理，在精细分散的材料上确保高度分散的催化活性组分的沉积和吸附。然后使用浸渍的粉末混合物制备ai水性涂料分散体，并用其涂覆载体结构。然后将涂层干燥并煅烧。

45. 发明授权

US06171565B2 Process for the operation of a nitrogen oxides storage catalyst 有权
标题翻译：氮氧化物储存催化剂的操作方法
公开(公告)号：US06171565B2
公开(公告)日：2001-01-09
申请号：US09227589
申请日：1999-01-08
申请人： J{umlaut over (u)}rgen Höhne , Wolfgang Strehlau , Egbert Lox , Thomas Kreuzer
发明人： J{umlaut over (u)}rgen Höhne , Wolfgang Strehlau , Egbert Lox , Thomas Kreuzer
IPC分类号： B01D5356
CPC分类号： B01D53/9445 , B01D53/9495 , B01D2255/91 , F01N3/0842 , F01N3/085 , F01N9/005 , F01N11/00 , F01N11/007 , F01N2550/03 , F01N2570/04 , F01N2570/16 , F01N2900/0422 , F02D41/0275 , F02D41/028 , F02D2200/0806 , F02D2200/0808 , Y02A50/2341 , Y02T10/22 , Y02T10/24 , Y02T10/47
摘要： A process of operating a nitrogen oxides storage catalyst of an exhaust gas treatment system is described. The process relates to the cycling of the normalized air/fuel ratio &lgr;-value of the exhaust gas exiting the engine, in which a lambda value greater than 1 represents oxygen-rich, lean burn conditions in which a sorption phase for the sorption of nitrogen oxides takes place; and in which a lambda value less than 1 represents oxygen-poor, rich burn conditions in which a desorption and conversion phase for the desorption and conversion of nitrogen oxides takes place. The &lgr;-value of the exhaust gas downstream from the storage catalyst is monitored during the desorption and conversion phase to determine the end of the desorption and conversion phase based on the &lgr;-value falling below a predetermined threshold value. Advantages of the process described include the ability to distinguish permanent from temporary damage to the nitrogen oxides storage catalyst, the ability to compensate for the slow deterioration in storage capacity, and the ability to determine when the storage capacity of the catalyst falls below a certain minimum capacity after which the storage catalyst must be either replaced or thermally treated while still installed in the exhaust gas treatment system.
摘要翻译：描述了操作废气处理系统的氮氧化物存储催化剂的方法。该过程涉及离开发动机的废气的归一化空气/燃料比率lambd值的循环，其中大于1的λ值表示富氧的稀燃条件，其中用于吸附氮的吸附相氧化物发生; 并且其中小于1的λ值表示氧贫，富氧燃烧条件，其中发生用于解吸和转化氮氧化物的解吸和转化相。在解吸和转化阶段期间监测从储存催化剂下游排出的废气的羔羊值，以基于羔羊值低于预定阈值确定解吸和转化阶段的结束。所述方法的优点包括将永久物与临时损伤区分为氮氧化物储存催化剂的能力，补偿储存容量缓慢劣化的能力以及确定催化剂的储存容量何时低于某一最低值的能力容量之后，储存催化剂必须被替换或热处理，同时仍然安装在废气处理系统中。

46. 发明授权

US6001318A Process for lowering nitrogen oxide levels in combustion engine exhaust gas 失效
标题翻译：降低内燃机废气中氮氧化物含量的方法
公开(公告)号：US6001318A
公开(公告)日：1999-12-14
申请号：US996215
申请日：1997-12-22
申请人： Hans Van Den Tillaart , Jurgen Leyrer , Egbert Lox , Thomas Kreuzer , Stephan Eckhoff
发明人： Hans Van Den Tillaart , Jurgen Leyrer , Egbert Lox , Thomas Kreuzer , Stephan Eckhoff
IPC分类号： F01N3/22 , B01D53/86 , B01D53/94 , F01N3/20 , F01N3/24 , F01N3/28 , B01D47/00 , B01J8/00 , F01N3/00 , F01N3/10
CPC分类号： B01D53/9409 , B01D53/9495 , F01N2610/03
摘要： A process is disclosed for lowering nitrogen oxide levels in combustion engine exhaust gas by a reduction catalyst and by controlling the exhaust gas temperature upstream from the catalyst to a constant value, at which the catalyst exhibits maximum conversion for nitrogen oxides. It is possible to maintain maximum conversion over a wide range of engine outlet temperatures of the exhaust gas.
摘要翻译：公开了一种通过还原催化剂降低内燃机废气中的氮氧化物含量并通过将催化剂上游的废气温度控制在恒定值的方法，在该值下催化剂表现出氮氧化物的最大转化率。可以在废气的发动机出口温度范围内保持最大转换。

47. 发明授权

US07811969B2 Method for coating a catalyst carrier containing two different partial structures with a catalytically active coating, and catalyst obtained thereby 有权
标题翻译：用催化活性涂层涂覆含有两种不同部分结构的催化剂载体的方法和由此得到的催化剂
公开(公告)号：US07811969B2
公开(公告)日：2010-10-12
申请号：US10535589
申请日：2003-11-04
申请人： Rainer Domesle , Thomas Kreuzer , Egbert Lox
发明人： Rainer Domesle , Thomas Kreuzer , Egbert Lox
IPC分类号： B01J21/04
CPC分类号： B01J37/0018 , B01J35/0006 , B01J35/04 , B01J35/06 , B01J37/0217 , F01N2250/02 , F01N2330/10
摘要： The invention relates to a process for the coating of a catalyst support with a catalytically active coat using a coating dispersion, the catalyst support containing at least two partial structures which differ in their absorptivity for the coating dispersion. The process is characterized in that the absorptivity of the partial structures is modified relative to one another by precoating of the catalyst support with a material which can be burnt out or with liquid, and the catalytic coat is then applied to the filter body in a known manner, dried and/or calcined.
摘要翻译：本发明涉及一种使用涂料分散体涂覆具有催化活性涂层的催化剂载体的方法，所述催化剂载体含有至少两种对于涂料分散体的吸收率不同的部分结构。该方法的特征在于，部分结构的吸收率相对于彼此通过用可燃烧或用液体的材料预涂覆催化剂载体而改变，然后将催化涂层以已知的方式施加到过滤器体上方式，干燥和/或煅烧。

48. 发明授权

US07351677B2 Process for regenerating a nitrogen oxides storage catalyst 有权
标题翻译：再生氮氧化物储存催化剂的方法
公开(公告)号：US07351677B2
公开(公告)日：2008-04-01
申请号：US10630303
申请日：2003-07-29
申请人： Friedemann Rohr , Peter Kattwinkel , Stefan D. Peter , Thomas Kreuzer , Egbert Lox
发明人： Friedemann Rohr , Peter Kattwinkel , Stefan D. Peter , Thomas Kreuzer , Egbert Lox
IPC分类号： B01J20/34
CPC分类号： F02D41/0275 , B01D53/9495 , B01D53/96 , F01N3/0885 , F01N2430/06 , F01N2560/026 , Y02T10/20
摘要： The present invention provides a process and a device for regeneration of a nitrogen oxide storage catalyst in the exhaust system of a diesel engine. The process comprises a first and a second regeneration strategy. The first regeneration strategy is applied when the exhaust gas temperature is above a threshold value and comprises changing the air/fuel-ratio from a lean to a rich value during a first regeneration period. The second regeneration strategy is applied when the exhaust gas temperature is below a threshold value and comprises switching the air/fuel-ratio back and forth between lean and rich air/fuel-ratios, forming a sequence of between 2 and 10 rich pulses and between 2 and 10 lean pulses during a second regeneration period.
摘要翻译：本发明提供一种用于在柴油发动机的排气系统中再生氮氧化物存储催化剂的方法和装置。该方法包括第一和第二再生策略。当废气温度高于阈值时，应用第一再生策略，并且包括在第一再生期间将空气/燃料比从贫值改变为浓值。当废气温度低于阈值时，应用第二再生策略，并且包括在稀空燃比之间来回切换空燃比，形成富二脉冲之间的序列，介于在第二再生期间的2和10个贫脉冲。

49. 发明授权

US07313911B2 Method of removing nitrogen oxides from the exhaust gas of a lean-burn internal combustion engine and exhaust-gas purification system therefor 有权
标题翻译：从稀燃内燃机的废气中除去氮氧化物的方法及其废气净化系统
公开(公告)号：US07313911B2
公开(公告)日：2008-01-01
申请号：US10547249
申请日：2004-02-26
申请人： Markus Pfeifer , Barry Van Setten , Paul Spurk , Yvonne Demel , Tobias Kuhl , Jürgen Gieshoff , Egbert Lox , Thomas Kreuzer
发明人： Markus Pfeifer , Barry Van Setten , Paul Spurk , Yvonne Demel , Tobias Kuhl , Jürgen Gieshoff , Egbert Lox , Thomas Kreuzer
IPC分类号： F01N3/00
CPC分类号： F01N3/2066 , B01D53/9431 , B01D53/9495 , F01N13/009 , F01N13/0093 , F01N2240/40 , F01N2610/02 , Y02T10/24
摘要： The present invention relates to a method of removing nitrogen oxides from the exhaust gas of a lean-burn internal combustion engine by selective catalytic reduction (SCR) using ammonia. The exhaust gas is routed first over a platinum-containing pre-catalyst and then over an SCR catalyst. The ammonia needed for the selective catalytic reduction is added to the exhaust gas upstream of the pre-catalyst at an exhaust-gas temperature below 250° C., while it is supplied to the exhaust gas between the pre-catalyst and the SCR catalyst at an exhaust gas temperature above 150° C. By adopting this procedure, a very large temperature range for the selective catalytic reduction with high nitrogen conversion rates is obtained.
摘要翻译：本发明涉及通过使用氨的选择性催化还原（SCR）从贫燃内燃机的废气中除去氮氧化物的方法。排气首先通过含铂预催化剂然后超过SCR催化剂。在低于250℃的排气温度下，将催化剂选择性还原所需的氨加入到预催化剂上游的废气中，同时向预催化剂和SCR催化剂之间的排气供应废气温度高于150℃。通过采用该方法，获得了具有高氮转化率的选择性催化还原的非常大的温度范围。

50. 发明申请

US20070110650A1 Catalyst arrangement and method of purifying the exhaust gas of internal combustion engines operated under lean conditions 有权
标题翻译：在精细条件下运行的内燃机的排气净化催化剂装置和方法
公开(公告)号：US20070110650A1
公开(公告)日：2007-05-17
申请号：US10567204
申请日：2004-07-29
申请人： Marcus Pfeifer , Nicola Soeger , Yvonne Demel , Tobias Kuhl , Paul Spurk , Jurgen Gieshoff , Egbert Lox , Thomas Kreuzer
发明人： Marcus Pfeifer , Nicola Soeger , Yvonne Demel , Tobias Kuhl , Paul Spurk , Jurgen Gieshoff , Egbert Lox , Thomas Kreuzer
IPC分类号： B01D50/00 , B01D53/94
CPC分类号： B01D53/945 , B01D53/9418 , B01D53/9422 , B01D53/9431 , B01D53/9454 , B01D2251/208 , B01D2255/1021 , B01D2255/204 , B01D2255/2042 , B01D2255/2065 , B01D2255/20707 , B01D2255/2073 , B01D2255/20738 , B01D2255/20761 , B01D2255/2092 , B01D2255/407 , B01D2255/504 , B01D2255/9155 , F01N3/035 , F01N3/0814 , F01N3/0821 , F01N3/0842 , F01N3/2066 , F01N3/2828 , F01N2250/12 , F01N2510/06 , Y02T10/22 , Y02T10/24
摘要： The invention relates to a catalyst arrangement for purifying the exhaust gases of internal combustion engines operated under lean conditions. It is proposed that a thinwalled, porous carrier be coated on one side with a nitrogen oxide storage catalyst and on the other side with an SCR catalyst. When the exhaust gas is passed through the catalytic coatings and the support material, a significant improvement in the nitrogen oxide conversion is achieved compared to a series arrangement of the catalysts on separate carriers. Wall flow filters have been found to be useful as thin-walled carriers.
摘要翻译：本发明涉及一种用于净化在稀薄条件下运行的内燃机废气的催化剂装置。建议在一侧用氮氧化物储存催化剂涂覆薄壁多孔载体，另一侧用SCR催化剂涂覆。当排气通过催化涂层和载体材料时，与单独的载体上的催化剂的串联排列相比，实现了氮氧化物转化率的显着改善。已经发现壁流式过滤器可用作薄壁载体。

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