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    Process for checking the operatability of a nitrogen oxide storage catalyst
    1.
    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 。

    Catalyst material
    3.
    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。

    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。

    Process for checking the operability of an exhaust gas purification catalyst
    10.
    发明授权
    Process for checking the operability of an exhaust gas purification catalyst 有权
    用于检查废气净化催化剂的可操作性的方法

    公开(公告)号：US06739176B2

    公开(公告)日：2004-05-25

    申请号：US09809355

    申请日：2001-03-16

    申请人： Ulrich Neuhausen ,  Harald Klein ,  Egbert Lox ,  Jürgen Gieshoff ,  Thomas Kreuzer

    发明人： Ulrich Neuhausen ,  Harald Klein ,  Egbert Lox ,  Jürgen Gieshoff ,  Thomas Kreuzer

    IPC分类号： G01M1500

    CPC分类号： F01N11/002 ,  F01N11/00 ,  F01N11/005 ,  F01N2550/02 ,  F02B3/06 ,  Y02T10/47

    摘要： A process for checking the operability of an exhaust gas purification catalyst for diesel engines, which has a light-off temperature and a degree of conversion rCO for carbon monoxide (CO), by direct measurement of the carbon monoxide concentration in combination with a temperature measurement. To evaluate the remaining catalytic activity of the catalyst the difference &Dgr;T between the current catalyst exit temperature TE of the exhaust gas and the light-off temperature TCO,50%,fresh of the fresh catalyst for carbon monoxide stored as a function of the speed and load &Dgr;T=TE−TCO,50%,fresh is determined and the degree of conversion rCO for carbon monoxide is ascertained.

    摘要翻译： 通过一氧化碳浓度的直接测量与温度测量结合来检查具有一氧化碳（CO）的起燃温度和转化度rCO的用于柴油机的排气净化催化剂的可操作性的方法 。 为了评估催化剂的剩余催化活性，废气的当前催化剂出口温度TE与起燃温度TCO之间的差值ΔTT为50％，一氧化碳新鲜催化剂的新鲜作为速度存储， 确定负载，并确定一氧化碳的转化程度rCO。