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    A THREE-WAY CONVERSION CATALYST IN GASOLINE-NATURAL GAS APPLICATIONS
    2.
    发明申请
    A THREE-WAY CONVERSION CATALYST IN GASOLINE-NATURAL GAS APPLICATIONS 有权

    公开(公告)号：US20210339228A1

    公开(公告)日：2021-11-04

    申请号：US17250794

    申请日：2019-09-12

    Applicant: BASF Corporation

    Inventor： Karifala DUMBUYA ,  Thomas SCHMITZ ,  Florian WALTZ ,  Stephan SIEMUND

    IPC: B01J23/656 ,  F01N3/10 ,  B01J21/04 ,  B01J37/02 ,  F01N3/035

    Abstract: The disclosure relates to a three-way conversion catalyst for the treatment of an exhaust gas comprising nitrogen monoxide, carbon monoxide, and hydrocarbon, wherein the catalyst comprises: (i) a substrate; (ii) a first coating comprising rhodium supported on a first oxidic component; (iii) a second coating comprising palladium supported on a non-zeolitic oxidic material, wherein the non-zeolitic oxidic material comprises manganese and a second oxidic component, wherein the second coating consists of 0 weight-% to 0.001 weight-% of platinum; wherein the first coating is disposed on the substrate over x % of the axial length, with x ranging from 80 to 100; wherein the second coating extends over y % of the axial length from the inlet end to the outlet end and is disposed on the first coating, with y ranging from 20 to x.

    PT/PD DOC WITH ENHANCED CO OXIDATION, HYDROCARBON OXIDATION AND NO OXIDATION AND IMPROVED SULFATION/DESULFATION BEHAVIOR
    4.
    发明申请
    PT/PD DOC WITH ENHANCED CO OXIDATION, HYDROCARBON OXIDATION AND NO OXIDATION AND IMPROVED SULFATION/DESULFATION BEHAVIOR 审中-公开

    公开(公告)号：US20190383184A1

    公开(公告)日：2019-12-19

    申请号：US16484874

    申请日：2018-03-13

    Applicant: BASF Corporation

    Inventor： Karifala DUMBUYA ,  Claudia ZABEL ,  Shiang SUNG

    IPC: F01N3/10 ,  B01J23/00 ,  B01J35/00 ,  B01J35/02 ,  B01J35/04 ,  B01J37/00 ,  B01J37/02

    Abstract: A diesel oxidation catalyst, comprising a washcoat comprising four layers, the washcoat being disposed on a substrate, wherein the washcoat comprises a first layer comprising a first platinum group metal supported on a first metal oxide support material, which first layer is disposed on the substrate; a second layer comprising a second platinum group metal supported on a second metal oxide support material, and comprising a fifth platinum group metal, which second layer is disposed on the first layer; a third layer comprising a third platinum group metal supported on a third metal oxide support material and comprising a zeolitic material comprising Fe and comprising a sixth platinum group metal; and a fourth layer comprising a fourth platinum group metal and a fourth metal oxide; wherein the substrate has a length, a front end and a rear end; wherein the first layer is disposed on the substrate on the entire length of the substrate, wherein the second layer is disposed on the first layer on the entire length of the substrate; wherein the third layer is at least partially disposed on the second layer on x % of the length of the substrate from the front end of the substrate; wherein the fourth layer is at least partially disposed on the second layer on y % of the length of the substrate from the rear end of the substrate; wherein x is in the range of from 30 to 70, y is in the range of from 30 to 70 and x+y is in the range of from 95 to 115.

    SELECTIVE CATALYTIC REDUCTION CATALYST ON A FILTER SUBSTRATE
    9.
    发明申请
    SELECTIVE CATALYTIC REDUCTION CATALYST ON A FILTER SUBSTRATE 有权

    公开(公告)号：US20210379530A1

    公开(公告)日：2021-12-09

    申请号：US17309016

    申请日：2019-10-30

    Applicant: BASF CORPORATION

    Inventor： Matthias PETER ,  Susanne STIEBELS ,  Karifala DUMBUYA ,  Claudia ZABEL

    IPC: B01D53/94 ,  F01N3/10 ,  F01N3/20 ,  F01N3/021 ,  F01N3/28 ,  B01J29/76 ,  B01J21/06 ,  B01J37/04 ,  B01J37/08 ,  B01J35/10 ,  B01J35/02 ,  B01J37/02 ,  B01J21/12 ,  B01J35/00 ,  B01J35/04 ,  B01J21/18

    Abstract: A selective catalytic reduction catalyst for the treatment of an exhaust gas stream of a passive ignition engine, the catalyst comprising a porous wall-flow filter substrate comprising an inlet end, an outlet end, a substrate axial length (w) extending between the inlet end and the outlet end, and a plurality of passages defined by porous internal walls of the porous wall flow filter substrate; wherein the catalyst further comprises a first coating, said first coating extending over x % of the substrate axial length from the inlet end toward the outlet end of the substrate, x being in the range of from 10 to 100, wherein the first coating comprises copper and an 8-membered ring pore zeolitic material; wherein the catalyst further comprises a second coating, the second coating extending over y % of the substrate axial length from the outlet end toward the inlet end of the substrate, y being in the range of from 20 to 90, wherein the second coating comprises copper, and optionally an 8-membered ring pore zeolitic material; wherein the catalyst optionally further comprises a third coating; wherein x+y is at least 90; wherein y % of w from the outlet end toward the inlet end of the substrate define the outlet zone of the coated substrate and (100−y) % of w from the inlet end toward the outlet end of the substrate define the inlet zone of the coated substrate; wherein the ratio of the loading of copper in the inlet zone, Cu(in), calculated as CuO, relative to the loading of copper in the outlet zone, Cu(out), calculated as CuO, Cu(in):Cu(out), is less than 1:1.

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