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    Catalyst for purifying exhaust gases from internal combustion engines and method of making the catalyst
    3.
    发明授权
    Catalyst for purifying exhaust gases from internal combustion engines and method of making the catalyst 失效
    用于从内燃机中净化排气的催化剂及制备催化剂的方法

    公开(公告)号：US5073532A

    公开(公告)日：1991-12-17

    申请号：US559095

    申请日：1990-07-30

    申请人： Rainer Domesle ,  Bernd Engler ,  Edgar Koberstein ,  Peter Schubert

    发明人： Rainer Domesle ,  Bernd Engler ,  Edgar Koberstein ,  Peter Schubert

    IPC分类号： B01D53/94 ,  B01J23/56 ,  B01J23/63 ,  B01J23/89 ,  B01J37/02

    CPC分类号： B01D53/945 ,  B01J23/63 ,  B01J23/894 ,  Y02T10/22

    摘要： A catalyst is described made of active aluminum oxide with additives of CeO.sub.2, ZrO.sub.2, and Fe.sub.2 O.sub.3 and/or NiO as carrier and an active phase, applied thereon and consisting of platinum, palladium and/or rhodium, and a base metal, which is obtainable by impregnation of the additive-containing carrier with solutions of salts of the metals for the active phase, wherein the base metal of the active phase is cerium, by drying, and by heating to 250.degree. to 650.degree. C. The catalyst can be used for the oxidation and/or reduction of exhaust gases from internal combustion engines.

    摘要翻译： 催化剂由具有CeO 2，ZrO 2和Fe 2 O 3和/或NiO作为载体的添加剂和施加在其上并由铂，钯和/或铑和贱金属组成的活性相的活性氧化铝制成，其可获得 通过用活性相的金属盐溶液浸渍含添加剂的载体，其中活性相的贱金属是铈，通过干燥，加热至250〜650℃。可以使用催化剂 用于氧化和/或还原来自内燃机的废气。

    Device and method for the continuous measurement of the ammonia concentration in gases in the ppm range
    9.
    发明授权
    Device and method for the continuous measurement of the ammonia concentration in gases in the ppm range 失效
    在PPM范围内连续测量气体浓度的装置和方法

    公开(公告)号：US5131260A

    公开(公告)日：1992-07-21

    申请号：US676707

    申请日：1991-03-29

    申请人： Reinhold Brand ,  Bernd Engler ,  Wolfgang Honen ,  Edgar Koberstein

    发明人： Reinhold Brand ,  Bernd Engler ,  Wolfgang Honen ,  Edgar Koberstein

    IPC分类号： G01N31/00 ,  G01N1/22 ,  G01N1/34 ,  G01N1/40 ,  G01N33/00

    CPC分类号： G01N1/405 ,  G01N1/2258 ,  G01N33/0054 ,  G01N2001/2217 ,  G01N2001/2282 ,  G01N2001/4033

    摘要： A device for the continuous measurement of the ammonia concentration in gases in the ppm range includes a columnar absorption vessel (1) with a hemispherical bottom (4). The bottom of the column includes an overflow (3) and an outlet (5). The gas introduction pipe (7,8) empties above the bottom (4) and below a sieve bottom (6) arranged in the column (1). A packing material (10) rests on the sieve bottom (6), which packing (10) essentially fills the absorption column (1). A cooling part (11) extends from the absorption column (1). The cooling part (11) includes a cooling zone (15) and a gas collection space (16) above it with a closable connection piece (13). A pipe (14), which may include a serrated crown on each end, runs from the gas collecting space (16) downward in a cooled manner to the packing 10. The liquid absorption agent is introduced through a lateral connection piece (18) into the gas collection space (16). For the measurement of ammonia concentration, a certain volume flow of the gas to be measured is washed in a countercurrent flow with the absorption agent, and the NH.sub.3 content is determined in a part of the ammonia containing absorption agent. The volume flow rate of the absorption agent and of the gas from which NH.sub.3 has been removed is measured (the latter being dried), and the ammonia concentration is thereby calculated.

    摘要翻译： 在ppm范围内连续测量气体中的氨浓度的装置包括具有半球形底部（4）的柱状吸收容器（1）。 塔的底部包括溢流（3）和出口（5）。 气体导入管（7,8）在布置在塔（1）中的底部（4）和下方的筛底（6）之上排空。 包装材料（10）搁置在筛底（6）上，该填料（10）基本上填充吸收塔（1）。 冷却部件（11）从吸收塔（1）延伸。 冷却部件（11）在其上方包括一个冷却区（15）和一个气体收集空间（16），并具有可关闭的连接件（13）。 可以在每个端部包括锯齿状冠的管道（14）从气体收集空间（16）以冷却的方式向下延伸到填料10.液体吸收剂通过横向连接件（18）引入 气体收集空间（16）。 为了测量氨浓度，将要测量的气体的一定体积流量与吸收剂以逆流流动洗涤，并且在含氨吸收剂的一部分中测定NH 3含量。 测量吸收剂和从其中除去NH 3的气体的体积流量（后者被干燥），由此计算氨浓度。