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    SULFUR-RESISTANT METAL PROMOTED SMALL PORE ZEOLITE CATALYSTS
    2.
    发明申请
    SULFUR-RESISTANT METAL PROMOTED SMALL PORE ZEOLITE CATALYSTS 审中-公开

    公开(公告)号：WO2022174814A1

    公开(公告)日：2022-08-25

    申请号：PCT/CN2022/076833

    申请日：2022-02-18

    申请人： BASF CORPORATION ,  ZHANG, Jiadi

    发明人： XUE, Wen-Mei ,  YANG, Xiaofan ,  TANG, Weiyong ,  BAYRAM, Burcu ,  HAO, Yufen

    IPC分类号： B01D53/56 ,  B01J29/90 ,  B01D53/86 ,  B01J35/04

    摘要： The present invention relates to a SCR catalytic article, comprising -a substrate and -a copper-containing small pore zeolite, having a crystal structure characterized by a decrease of unit cell volume upon sulfurization and desulfurization of less than Å3 as determined by an X-ray powder diffraction, wherein the sulfurization and desulfurization are carried out in accordance with the processes as described in the specification, and to an exhaust treatment system comprising the same. The present invention also relates to a method for determining whether a metal-promoted small pore zeolite is resistant to irreversible sulfur poisoning and a method for evaluating whether a metal-promoted small pore zeolite is qualified for resistance to irreversible sulfur poisoning.

    SELECTIVE CATALYTIC REDUCTION ARTICLES AND SYSTEMS
    7.
    发明申请
    SELECTIVE CATALYTIC REDUCTION ARTICLES AND SYSTEMS 审中-公开

    公开(公告)号：WO2018172940A1

    公开(公告)日：2018-09-27

    申请号：PCT/IB2018/051874

    申请日：2018-03-20

    申请人： BASF CORPORATION

    发明人： XUE, Wen-Mei ,  YANG, Xiaofan ,  ZHU, Haiyang ,  ROTH, Stanley ,  YANG, Jeff ,  PRASAD, Subramanian ,  MOINI, Ahmad

    IPC分类号： B01J29/76 ,  B01J37/10 ,  B01J29/82 ,  B01J29/86 ,  B01J29/74 ,  B01J37/02 ,  F01N3/20 ,  B01J35/04

    摘要： The present disclosure relates to copper-containing molecular sieve catalysts that are highly suitable for the treatment of exhaust containing NOx pollutants. The copper-containing molecular sieve catalysts contain ion-exchanged copper as Cu +2 and Cu(OH) +1 , and DRIFT spectroscopy of the catalyst exhibits perturbed T-O-T vibrational peaks corresponding to the Cu +2 and Cu(OH) +1 . In spectra taken of the catalytic materials, a ratio of the Cu +2 to the Cu(OH) +1 peak integration areas preferably can be ≥ 1. The copper-containing molecular sieve catalysts are aging stable such that the peak integration area percentage of the Cu +2 peak (area Cu +2 /(area Cu +2 + area Cu(OH) +1 )) increases by ≤ 20% upon aging at 800 o C for 16 hours in the presence of 10% H 2 O/air, compared to the fresh state.

    SELECTIVE CATALYTIC REDUCTION ARTICLES AND SYSTEMS
    8.
    发明申请
    SELECTIVE CATALYTIC REDUCTION ARTICLES AND SYSTEMS 审中-公开
    选择性催化还原制品和系统

    公开(公告)号：WO2018025245A1

    公开(公告)日：2018-02-08

    申请号：PCT/IB2017/054804

    申请日：2017-08-04

    申请人： BASF CORPORATION

    发明人： XUE, Wen-Mei ,  YANG, Jeff ,  ROTH, Stanley ,  VOSS, Kenneth E. ,  SHAH, Sandip ,  MOHANAN, Jaya L.

    IPC分类号： B01J37/02 ,  B01J29/072 ,  F01N3/20 ,  B01J29/76 ,  B01J35/04

    摘要： Certain selective catalytic reduction (SCR) articles, systems and methods provide for high NOx conversion while at the same time low N 2 O formation. The articles, systems and methods are suitable for instance for the treatment of exhaust gas of diesel engines. Certain articles have zoned coatings containing copper-containing molecular sieves disposed thereon, where for example a concentration of catalytic copper in an upstream zone is lower than the concentration of catalytic copper in a downstream zone.

    摘要翻译： 某些选择性催化还原（SCR）制品，系统和方法提供高NOx转化率，同时形成低N 2 O。 这些制品，系统和方法适用于例如柴油机排气的处理。 某些制品具有设置在其上的含有含铜分子筛的分区涂层，其中例如上游区域中的催化铜浓度低于下游区域中的催化铜浓度。

    PREPARATION PROCESS OF SCR CATALYST COMPRISING CU AND FE-EXCHANGED ZEOLITE, SAID CATALYST, SYSTEM COMPRISING SAID CATALYST AND EXHAUST GAS TREATMENT USING SUCH
    9.
    发明申请
    PREPARATION PROCESS OF SCR CATALYST COMPRISING CU AND FE-EXCHANGED ZEOLITE, SAID CATALYST, SYSTEM COMPRISING SAID CATALYST AND EXHAUST GAS TREATMENT USING SUCH 审中-公开

    公开(公告)号：WO2022122799A1

    公开(公告)日：2022-06-16

    申请号：PCT/EP2021/084733

    申请日：2021-12-08

    申请人： BASF CORPORATION [US]/[US] ,  BASF SE [DE]/[DE] (KN)

    发明人： YANG, Jeff ,  XUE, Wen-Mei ,  ROTH, Stanley A.

    IPC分类号： B01J29/76 ,  B01J29/14 ,  B01J29/46 ,  B01J29/68 ,  B01J29/24 ,  B01J29/56 ,  B01J35/04 ,  B01J37/02 ,  B01D53/94

    摘要： The present invention relates to a process for preparing a catalyst for the selective catalytic reduction of nitrogen oxide A process for preparing a catalyst for the selective catalytic reduction of nitrogen oxide comprising (1) providing a zeolitic material comprising SiO2 and X2O3 in its framework structure, wherein X is a trivalent element; (2) subjecting the zeolitic material provided in (1) to an ion exchange procedure with one or more copper(ll) containing compounds; (3) preparing a slurry comprising the Cu ion-exchanged zeolitic material obtained in (2), one or more iron (ll) and/or iron (III) containing compounds, and a solvent system; (4) providing a substrate and coating the slurry obtained in (3) onto the substrate; (5) calcining the coated substrate obtained in (4). Furthermore, the present invention relates to a catalyst for the selective catalytic reduction of nitrogen oxide obtained according to the inventive process and to its use. In addition thereto, the present invention relates to an exhaust gas treatment system for the treatment of exhaust gas exiting from an internal combustion engine, the system comprising a catalyst for the selective catalytic reduction of nitrogen oxide according to the present invention. Finally, the present invention relates to a method for the selective catalytic reduction of nitrogen oxides which employs a catalyst for the selective catalytic reduction of nitrogen oxide according to the present invention.

    ZEOLITE-CONTAINING SCR CATALYSTS
    10.
    发明申请
    ZEOLITE-CONTAINING SCR CATALYSTS 审中-公开

    公开(公告)号：WO2021263022A1

    公开(公告)日：2021-12-30

    申请号：PCT/US2021/038953

    申请日：2021-06-24

    申请人： BASF CORPORATION

    发明人： XUE, Wen-Mei

    IPC分类号： B01J37/00 ,  B01J37/04 ,  B01J29/70 ,  B01D53/94 ,  F01N3/20

    摘要： The present disclosure provides a selective catalytic reduction (SCR) catalyst composition prepared from a first un-promoted zeolite having a first silica-to-alumina ratio (SAR) from about 5 to about 100, a promoter precursor, and a second un-promoted zeolite having a second silica-to-alumina ratio (SAR) from about 5 to about 100. The present disclosure further provides a method of forming the SCR catalyst composition, a catalytic article comprising the SCR catalyst composition, an engine exhaust gas treatment system comprising the SCR catalyst composition, and a method of removing nitrogen oxides from exhaust gas from a lean burn engine using the SCR catalyst composition.