利索-全球专利检索

  1. 登录
  2. 注册

搜索结果

9 条记录 (耗时 0.021 秒)

    Catalyst material
    2.
    发明授权
    Catalyst material 有权
    催化剂材料

    公开(公告)号：US06475951B1

    公开(公告)日：2002-11-05

    申请号：US09513341

    申请日：2000-02-25

    申请人： Rainer Domesle ,  Ulrich Göbel ,  Lothar Mussmann ,  Egbert Lox ,  Thomas Kreuzer

    发明人： Rainer Domesle ,  Ulrich Göbel ,  Lothar Mussmann ,  Egbert Lox ,  Thomas Kreuzer

    IPC分类号： B01J2300

    CPC分类号： B01D53/945 ,  B01J23/002 ,  B01J23/58 ,  B01J23/63 ,  B01J37/0205 ,  B01J37/0248 ,  B01J2523/00 ,  Y02T10/22 ,  B01J2523/3712 ,  B01J2523/48

    摘要： A powdered catalyst material based on aluminum oxide, which contains at least one basic metal oxide and at least one noble metal from the platinum group of the Periodic Table of Elements in addition to aluminum oxide. The catalyst material is obtainable by loading a support material already stabilized by basic oxides by renewed impregnation with further basic oxides. After drying and calcining this post-impregnated material at temperatures below 800° C., the catalytically active noble metals are also incorporated into the support material by impregnation.

    摘要翻译： 基于氧化铝的粉末状催化剂材料，其除了氧化铝之外还含有至少一种碱金属氧化物和至少一种来自元素周期表的铂族的贵金属。 催化剂材料可以通过用另外的碱性氧化物再次浸渍加载已经通过碱性氧化物稳定的载体材料而获得。 在低于800℃的温度下干燥和煅烧该浸渍后材料之后，催化活性的贵金属也通过浸渍掺入载体材料中。

    Process for evaluating performance deterioration of a nitrogen oxide storage catalyst
    3.
    发明授权
    Process for evaluating performance deterioration of a nitrogen oxide storage catalyst 有权
    用于评估氮氧化物存储催化剂的性能劣化的方法

    公开(公告)号：US06216449B1

    公开(公告)日：2001-04-17

    申请号：US09288075

    申请日：1999-04-08

    申请人： Wolfgang Strehlau ,  Lothar Mussmann ,  Ulrich Göbel

    发明人： Wolfgang Strehlau ,  Lothar Mussmann ,  Ulrich Göbel

    IPC分类号： F01N300

    CPC分类号： F01N3/0814 ,  B01D53/9495 ,  F01N3/0807 ,  F01N3/0842 ,  F01N3/0864 ,  F01N11/007 ,  F01N2550/03 ,  F01N2570/16 ,  F01N2900/0422 ,  F02D41/0235 ,  F02D41/1441 ,  F02D41/1456 ,  F02D2200/0808 ,  F02D2200/0816 ,  Y02T10/47

    摘要： A process for evaluating performance deterioration of a nitrogen oxide storage catalyst which has a nitrogen oxide storage function and an oxygen storage function and is operated with cyclic alternation of the air/fuel ratio in the exhaust gas from lean to rich. The nitrogen oxides are stored during the lean phase and the nitrogen oxides are desorbed and converted during the rich phase. To check the serviceability of the storage catalyst, the air/fuel ratio of the exhaust gas is switched from lean to rich and the rich phase is extended beyond the time required for complete desorption of the nitrogen oxides until at least the rich exhaust gas passes right through the catalyst and the time interval &Dgr;t1 produced between the first change-over until breakthrough of the rich exhaust gas and, after again switching from rich to lean running, the time interval &Dgr;t2 produced between the second change-over and passage of oxygen through the catalyst are measured and the time differences &Dgr;t1 and &Dgr;t2 are used for separate assessment of the oxygen storage function and the nitrogen oxide storage function of the catalyst.

    摘要翻译： 一种用于评估具有氮氧化物存储功能和储氧功能的氮氧化物存储催化剂的性能劣化的方法，并且在废气中的空气/燃料比的循环交替从贫到富运行。 氮氧化物在稀相期间储存，氮氧化物在富相期间解吸和转化。 为了检查储存催化剂的使用性能，废气的空气/燃料比从稀释转为富，富相扩展到氮氧化物完全解吸所需的时间，直到至少富排气向右流动 通过催化剂和在第一次转换之间产生的时间间隔DELTAt1直到富排气的突破之间，并且在再次从富运行切换到稀薄运行之后，在氧气通过第二转换和通过之间产生的时间间隔DELTAt2 测量催化剂，并将时间差DELTAt1和DELTAt2用于分离评估催化剂的储氧功能和氮氧化物储存功能。

    Nitrogen oxide storage catalyst
    4.
    发明授权
    Nitrogen oxide storage catalyst 有权
    氮氧化物储存催化剂

    公开(公告)号：US06413904B1

    公开(公告)日：2002-07-02

    申请号：US09417915

    申请日：1999-10-13

    申请人： Wolfgang Strehlau ,  Ulrich Göbel ,  Rainer Domesle

    发明人： Wolfgang Strehlau ,  Ulrich Göbel ,  Rainer Domesle

    IPC分类号： B01J2358

    CPC分类号： B01D53/9422 ,  B01D2255/1021 ,  B01D2255/1025 ,  B01D2255/202 ,  B01D2255/204 ,  B01D2255/2042 ,  B01D2255/2092 ,  B01D2255/407 ,  B01J23/58 ,  B01J23/63 ,  B01J27/053

    摘要： A nitrogen oxide storage catalyst which contains at least one catalyst material and at least one nitrogen oxide storage component from the group of alkali and alkaline earth metals. The nitrogen oxide storage component, after completing catalyst preparation, is present as finely divided barium sulfate, strontium sulfate, a mixture or mixed crystals of the two sulfates, or as their complete or incomplete decomposition product with an average particle size of less than 1 &mgr;m. Barium sulfate and/or strontium sulfate act as feed materials for the active storage component in the storage catalyst according to the invention. As a result of the reductive exhaust gas compositions occurring under normal automobile driving conditions barium sulfate and strontium sulfate decompose to compounds which are able to store nitrogen oxides. This compensates for the loss of active storage components which occurs due to aging. Barium sulfate and/or strontium sulfate may be decomposed during production by means of reductive calcination in order to obtain a high initial loading of the catalyst with storage compounds. In this case, these sulfates are used as auxiliary agents in order to introduce the highest possible concentrations of storage compounds into the storage catalyst.

    摘要翻译： 含有至少一种催化剂材料和至少一种来自碱金属和碱土金属组的氮氧化物储存组分的氮氧化物储存催化剂。 完成催化剂制备后，氮氧化物储存组分以细碎的硫酸钡，硫酸锶，两种硫酸盐的混合物或混合物形式存在，或作为其完全或不完全的分解产物，平均粒度小于1um 。 硫酸钡和/或硫酸锶作为根据本发明的储存催化剂中的活性储存组分的进料。 由于在正常的汽车驾驶条件下发生的还原废气组合物的结果是硫酸钡和硫酸锶分解成能够存储氮氧化物的化合物。 这补偿了由于老化而发生的主动存储组件的损失。 硫酸钡和/或硫酸锶可以通过还原煅烧在生产过程中分解，以便用储存化合物获得催化剂的初始负载量。 在这种情况下，这些硫酸盐用作辅助剂，以便将最高可能浓度的储存化合物引入储存催化剂中。

    Storage material for sulfur oxides
    5.
    发明授权
    Storage material for sulfur oxides 有权
    硫氧化物的储存材料

    公开(公告)号：US06338831B1

    公开(公告)日：2002-01-15

    申请号：US09276903

    申请日：1999-03-26

    申请人： Wolfgang Strehlau ,  Ulrich Göbel ,  Rainer Domesle ,  Egbert Lox ,  Thomas Kreuzer

    发明人： Wolfgang Strehlau ,  Ulrich Göbel ,  Rainer Domesle ,  Egbert Lox ,  Thomas Kreuzer

    IPC分类号： B01D5350

    CPC分类号： B01J20/08 ,  B01D53/508 ,  B01D53/94 ,  B01J20/041 ,  B01J20/28042 ,  B01J20/28057 ,  B01J20/3078 ,  B01J20/3204 ,  B01J20/3236

    摘要： A sulfur oxide storage material contains a magnesium-aluminum spinel (MgO.Al2O3) and can be used as a so-called “sulfur trap” to remove sulfur oxides from oxygen-containing exhaust gases of industrial processes. In particular, it can be used for the catalytic purification of exhaust gas from internal-combustion engines to remove the sulfur oxides from the exhaust gas in order to protect the exhaust gas catalysts from sulfur poisoning. The material displays a molar ratio of magnesium oxide to aluminum oxide in the range of over 1.1:1, and the magnesium oxide present in stoichiometric excess is homogeneously distributed in a highly disperse form in the storage material.

    摘要翻译： 硫氧化物储存材料含有镁 - 铝尖晶石（MgO·Al 2 O 3），并且可以用作所谓的“硫阱”，以从工业过程的含氧废气中除去硫氧化物。 特别地，其可以用于从内燃机排出的废气的催化净化，以从废气中除去硫氧化物，以保护废气催化剂免受硫中毒。 该材料显示氧化铝与氧化铝的摩尔比在1.1:1以上，以化学计量过量存在的氧化镁以高分散形式均匀地分布在储存材料中。

    Method for producing a nitrogen oxide storage material and a storage material made with it
    8.
    发明授权
    Method for producing a nitrogen oxide storage material and a storage material made with it 有权
    用于制备氮氧化物存储材料的方法和由其制成的储存材料

    公开(公告)号：US06602820B1

    公开(公告)日：2003-08-05

    申请号：US09712186

    申请日：2000-11-15

    申请人： Ulrich Göbel ,  Lutz Marc Ruwisch ,  Ralph Kiessling ,  Martin Foerster

    发明人： Ulrich Göbel ,  Lutz Marc Ruwisch ,  Ralph Kiessling ,  Martin Foerster

    IPC分类号： B01J2100

    CPC分类号： B01D53/9422 ,  B01D2255/1021 ,  B01D2255/1023 ,  B01D2255/1025 ,  B01D2255/1028 ,  B01D2255/2042 ,  B01D2255/2047 ,  B01D2255/2063 ,  B01D2255/2065 ,  B01D2255/407 ,  B01J23/002 ,  B01J23/02 ,  B01J23/10 ,  B01J23/40 ,  B01J37/082

    摘要： A method for producing a nitrogen oxide storage material that contains at least one storage component in the form of particles of an oxide, carbonate or hydroxide of the elements magnesium, strontium, barium, lanthanum and cerium on a carrier material from the group consisting of doped cerium oxide, cerium/zirconium mixed oxide and aluminum oxide or mixtures of these. The method is carried out by suspending the support material in an aqueous solution of precursors of the storage components, this suspension is then introduced into a hot gas stream, the temperature of which is calculated so that, during a residence time of the suspension in the hot gas stream of less than one minute, the solvent of the suspension is evaporated out and the precursors of the storage components are thermally broken down and converted to the storage components before the storage material that forms in this way is separated from the stream of hot gases.

    摘要翻译： 一种制备氮氧化物储存材料的方法，其在载体材料上含有至少一种元素镁，锶，钡，镧和铈元素的氧化物，碳酸盐或氢氧化物颗粒形式的储存组分，所述载体材料由掺杂 氧化铈，铈/锆混合氧化物和氧化铝或它们的混合物。 该方法通过将载体材料悬浮在储存组分的前体的水溶液中来进行，然后将该悬浮液引入热气流中，计算其温度，使得在悬浮液的停留时间 热气流不足一分钟，蒸发掉悬浮液的溶剂，并将储存组分的前体热分解并转化成储存组分，然后以这种方式形成的储存材料与热流分离 气体。

    Process for checking the operatability of a nitrogen oxide storage catalyst
    9.
    发明授权
    Process for checking the operatability of a nitrogen oxide storage catalyst 有权
    用于检查氮氧化物存储催化剂的可操作性的方法

    公开(公告)号：US06684628B2

    公开(公告)日：2004-02-03

    申请号：US09832332

    申请日：2001-04-11

    申请人： Ulrich Göbel ,  Lutz Marc Ruwisch ,  Egbert Lox ,  Thomas Kreuzer

    发明人： Ulrich Göbel ,  Lutz Marc Ruwisch ,  Egbert Lox ,  Thomas Kreuzer

    IPC分类号： F01N300

    CPC分类号： F01N3/0864 ,  F01N3/0807 ,  F01N3/0842 ,  F01N11/00 ,  F01N2550/03 ,  F02D2041/147 ,  Y02T10/47

    摘要： The present invention provides processes for checking the operability of a nitrogen oxide storage catalyst during operation of a lean burn engine. The processes of the present invention utilize a nitrogen oxide storage material, a catalytically active component and optionally an oxygen storage material. During lean burn engine operation, damage to the catalytically active components is detected if the nitrogen oxide storage capacity in the kinetically controlled temperature range is lowered and damage to the storage material is detected if the nitrogen oxide storage capacity is lowered in the thermodynamically controlled temperature range.

    摘要翻译： 本发明提供了在稀燃发动机操作期间检查氮氧化物存储催化剂的可操作性的方法。 本发明的方法利用氮氧化物储存材料，催化活性组分和任选的储氧材料。 在稀燃发动机运转中，如果在动力学控制的温度范围内的氮氧化物存储容量降低并且如果在热力学控制的温度范围内降低了氮氧化物存储容量，则检测到对储存材料的损坏，则检测到对催化活性组分的损伤 。