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11 条记录 (耗时 0.016 秒)

    SCR catalyst device containing vanadium oxide and molecular sieve containing iron
    3.
    发明授权
    SCR catalyst device containing vanadium oxide and molecular sieve containing iron 有权

    公开(公告)号：US11300029B2

    公开(公告)日：2022-04-12

    申请号：US16469835

    申请日：2017-12-20

    申请人： UMICORE AG & CO. KG

    发明人： Stephan Malmberg ,  Nicola Soeger

    IPC分类号： F01N3/28 ,  F01N3/20 ,  B01J21/06 ,  B01J23/22

    摘要： The invention relates to a catalyst device for purifying exhaust gases containing nitrogen oxide by using selective catalytic reduction (SCR), the catalyst device comprising at least two catalytic layers, the first layer containing vanadium oxide and a mixed oxide comprising titanium oxide and silicon oxide and the second layer containing a molecular sieve containing iron, wherein the first layer is applied onto the second layer. The invention also relates to uses of the catalyst device and a method for purifying exhaust gases.

    SCR catalyst
    5.
    发明授权
    SCR catalyst 有权

    公开(公告)号：US10022704B2

    公开(公告)日：2018-07-17

    申请号：US15035640

    申请日：2014-11-19

    申请人： UMICORE AG & CO. KG

    发明人： Stephan Malmberg ,  Nicola Soeger ,  Yvonne Demel ,  Gerald Jeske

    IPC分类号： B01J23/30 ,  B01J35/00 ,  B01J35/04 ,  B01J35/10 ,  B01D53/94 ,  B01J37/02 ,  B01J37/08 ,  B01J21/06

    摘要： The invention relates to a catalyst comprising at least two catalytically active layers, A and B, wherein A contains a carrier oxide and components A1 and A2, and B contains a carrier oxide and components B1, B2, and B3, wherein A1, A2, and B1 to B3 are defined as disclosed in claim 1. The proportion of component A1 in layer A is thereby greater than the proportion of component B1 in layer B, wherein the proportion of layer A with respect to the total weight of layers A and B, is greater than the proportion of layer B. The invention further relates to a method for reducing nitrogen oxides in exhaust gases of lean-burn internal combustion engines and to an exhaust gas cleaning system.