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    Method for producing cyclohexanediamines
    5.
    发明授权
    Method for producing cyclohexanediamines 失效
    环己烷二胺的制备方法

    公开(公告)号：US06369274B1

    公开(公告)日：2002-04-09

    申请号：US09831353

    申请日：2001-07-20

    申请人： Alfons Baiker ,  Tamas Mallat ,  Achim Fischer

    发明人： Alfons Baiker ,  Tamas Mallat ,  Achim Fischer

    IPC分类号： C07C20900

    CPC分类号： C07C209/26 ,  C07C209/16 ,  C07C209/66

    摘要： 1,n-cyclohexanediamines (n=2, 3, 4) of general formula (I), wherein one of the radicals R1 to R3 is an amino group and the two others mean hydrogen, are produced from the corresponding cyclohexanediols and ammonia in the presence of a catalyst containing cobalt, at 100° to 350° C. and 50 to 300 bar. The compounds that can be produced according to the invention are structural elements for polymers, especially polyamides, polyimides, polyurea or polyurethanes, and ligands for cytostatically effective transition metal complexes.

    摘要翻译： 1，通式（I）的正环己烷二胺（n = 2,3,4），其中基团R 1至R 3中的一个为氨基，另外两个为氢，由相应的环己二醇和氨在 在含有钴的催化剂存在下，在100〜350℃，50〜300巴下。 根据本发明可以生产的化合物是用于聚合物，特别是聚酰胺，聚酰亚胺，聚脲或聚氨酯的结构元件，以及细胞有效过渡金属配合物的配体。

    METHOD FOR THE REACTIVATION OF THERMALLY AGED NITROGEN OXIDE STORAGE CATALYTIC CONVERTERS
    10.
    发明申请
    METHOD FOR THE REACTIVATION OF THERMALLY AGED NITROGEN OXIDE STORAGE CATALYTIC CONVERTERS 有权
    热老化氧化物储存催化转化器的反应方法

    公开(公告)号：US20090131243A1

    公开(公告)日：2009-05-21

    申请号：US11995590

    申请日：2006-07-15

    申请人： Meike Wittrock ,  Ulrich Goebel ,  Thomas Kreuzer ,  Cristina Maria Casapu ,  Jan-Dierk Grunwaldt ,  Marek Maciejewski ,  Alfons Baiker

    发明人： Meike Wittrock ,  Ulrich Goebel ,  Thomas Kreuzer ,  Cristina Maria Casapu ,  Jan-Dierk Grunwaldt ,  Marek Maciejewski ,  Alfons Baiker

    IPC分类号： B01J38/06

    CPC分类号： B01J38/06 ,  B01D53/9409 ,  B01J23/002 ,  B01J23/10 ,  B01J23/63 ,  B01J23/92 ,  B01J23/96 ,  B01J2523/00 ,  F01N3/035 ,  F01N3/0814 ,  F01N3/0842 ,  F01N3/0885 ,  F01N3/103 ,  F01N13/02 ,  F01N2430/08 ,  F01N2550/03 ,  F02B29/0437 ,  F02D41/0055 ,  F02D41/0275 ,  Y02A50/2322 ,  Y02T10/22 ,  B01J2523/25 ,  B01J2523/3712 ,  B01J2523/828

    摘要： Nitrogen oxide storage catalysts are used for removing the nitrogen oxides present in the lean-burn exhaust gas of lean-burn engines. Here, the purifying action is based on the nitrogen oxides being stored in the form of nitrates by the storage material of the storage catalyst during a lean-burn operating phase of the engine and the previously formed nitrates being decomposed in a subsequent rich-burn operating phase of the engine and the nitrogen oxides which are being liberated again being reacted with the reducing exhaust gas constituents over the storage catalyst to form nitrogen, carbon dioxide and water. Storage catalysts are thermally aged by high temperatures. The aging is due to sintering of the catalytically active noble metal components of the catalyst and to formation of compounds of the storage components with the support materials. According to the invention, the formation of compounds of the storage materials can be largely reversed by treatment of the storage material with a gas mixture comprising nitrogen dioxide and/or carbon dioxide and water vapor at temperatures of from 300 to 500° C. The reactivation can be carried out either directly on the vehicle by setting appropriate exhaust gas conditions or during a routine service by removal of the catalyst from the vehicle and treatment with a gas mixture in an appropriate apparatus.

    摘要翻译： 氮氧化物储存催化剂用于除去贫燃发动机的稀燃废气中存在的氮氧化物。 这里，净化作用是基于在发动机的稀薄燃烧操作阶段期间由储存催化剂的储存材料以硝酸盐的形式储存的氮氧化物，并且先前形成的硝酸盐在随后的富燃烧操作中被分解 再次释放的发动机和氮氧化物的相与还原废气成分反应，形成氮气，二氧化碳和水。 储存催化剂通过高温热老化。 老化是由于催化剂的催化活性贵金属组分的烧结以及用载体材料形成储存组分的化合物。 根据本发明，存储材料的化合物的形成可以通过在包含二氧化氮和/或二氧化碳和水蒸汽的气体混合物中在300-500℃的温度下处理储存材料而大大地逆转。再活化 可以直接在车辆上进行，通过设定适当的废气条件或者在例行服务期间通过从车辆中除去催化剂并在合适的装置中用气体混合物进行处理。