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    Process for preparing iron(III)-exchanged zeolite composition
    1.
    发明授权
    Process for preparing iron(III)-exchanged zeolite composition 有权

    公开(公告)号：US10710059B2

    公开(公告)日：2020-07-14

    申请号：US16062364

    申请日：2016-12-20

    Applicant: BASF Corporation

    Inventor： Qi Fu ,  Barbara Slawski ,  Peter Pfab

    IPC: B01J29/06 ,  B01J29/72 ,  C01B39/02 ,  B01J29/76 ,  B01J29/072 ,  B01D53/94 ,  B01J35/04 ,  B01J37/02 ,  B01J29/14 ,  B01J37/30 ,  F01N3/10 ,  F01N3/20

    Abstract: The present disclosure relates to processes for formation of a molecular sieve, particularly a metal-promoted molecular sieve, and more particularly an Iron(III) exchanged zeolite. Preferably, the zeolite is of the chabazite form or similar structure. The processes can include combining a zeolite with Iron(III) cations in an aqueous medium. The process can be carried out at a pH of less than about 7, and a buffering material can be used with the aqueous medium. The processes beneficially result in Iron exchange that can approach 100% along with removal of cations (such as sodium, NH4, and H) from the zeolite. An Iron(III)-exchanged zeolite prepared according to the disclosed processes can include about 2,000 ppm or less of cation and about 1% by weight or greater of Iron(III). The disclosure also provides catalysts (e.g., SCR catalysts) and exhaust treatment systems including the Iron(III)-exchanged zeolite.

    PROCESS FOR PREPARING IRON(III)-EXCHANGED ZEOLITE COMPOSITION
    3.
    发明申请
    PROCESS FOR PREPARING IRON(III)-EXCHANGED ZEOLITE COMPOSITION 审中-公开

    公开(公告)号：US20180369796A1

    公开(公告)日：2018-12-27

    申请号：US16062364

    申请日：2016-12-20

    Applicant: BASF Corporation

    Inventor： Qi FU ,  Barbara Slawski ,  Peter Pfab

    IPC: B01J29/72 ,  B01J37/30 ,  F01N3/20 ,  F01N3/10 ,  C01B39/02

    Abstract: The present disclosure relates to processes for formation of a molecular sieve, particularly a metal-promoted molecular sieve, and more particularly an Iron(III) exchanged zeolite. Preferably, the zeolite is of the chabazite form or similar structure. The processes can include combining a zeolite with Iron(III) cations in an aqueous medium. The process can be carried out at a pH of less than about 7, and a buffering material can be used with the aqueous medium. The processes beneficially result in Iron exchange that can approach 100% along with removal of cations (such as sodium, NH4, and H) from the zeolite. An Iron(III)-exchanged zeolite prepared according to the disclosed processes can include about 2,000 ppm or less of cation and about 1% by weight or greater of Iron(III). The disclosure also provides catalysts (e.g., SCR catalysts) and exhaust treatment systems including the Iron(III)-exchanged zeolite.

    PROCESS FOR PREPARING IRON(III)-EXCHANGED ZEOLITE COMPOSITION
    8.
    发明申请
    PROCESS FOR PREPARING IRON(III)-EXCHANGED ZEOLITE COMPOSITION 审中-公开

    公开(公告)号：US20200298217A1

    公开(公告)日：2020-09-24

    申请号：US16899138

    申请日：2020-06-11

    Applicant: BASF Corporation

    Inventor： Qi Fu ,  Barbara Slawski ,  Peter Pfab

    IPC: B01J29/72 ,  C01B39/02 ,  B01J29/76 ,  B01J29/072 ,  B01D53/94 ,  B01J35/04 ,  B01J37/02 ,  B01J29/14 ,  B01J37/30 ,  F01N3/10 ,  F01N3/20

    Abstract: The present disclosure relates to processes for formation of a molecular sieve, particularly a metal-promoted molecular sieve, and more particularly an Iron(III) exchanged zeolite. Preferably, the zeolite is of the chabazite form or similar structure. The processes can include combining a zeolite with Iron(III) cations in an aqueous medium. The process can be carried out at a pH of less than about 7, and a buffering material can be used with the aqueous medium. The processes beneficially result in Iron exchange that can approach 100% along with removal of cations (such as sodium, NH4, and H) from the zeolite. An Iron(III)-exchanged zeolite prepared according to the disclosed processes can include about 2,000 ppm or less of cation and about 1% by weight or greater of Iron(III). The disclosure also provides catalysts (e.g., SCR catalysts) and exhaust treatment systems including the Iron(III)-exchanged zeolite.

    Process for preparing iron(III)-exchanged zeolite composition
    9.
    发明授权
    Process for preparing iron(III)-exchanged zeolite composition 有权

    公开(公告)号：US11439992B2

    公开(公告)日：2022-09-13

    申请号：US16899138

    申请日：2020-06-11

    Applicant: BASF Corporation

    Inventor： Qi Fu ,  Barbara Slawski ,  Peter Pfab

    IPC: B01J29/72 ,  C01B39/02 ,  B01J29/76 ,  B01J29/072 ,  B01D53/94 ,  B01J35/04 ,  B01J37/02 ,  B01J29/14 ,  B01J37/30 ,  F01N3/10 ,  F01N3/20

    Abstract: The present disclosure relates to processes for formation of a molecular sieve, particularly a metal-promoted molecular sieve, and more particularly an Iron(III) exchanged zeolite. Preferably, the zeolite is of the chabazite form or similar structure. The processes can include combining a zeolite with Iron(III) cations in an aqueous medium. The process can be carried out at a pH of less than about 7, and a buffering material can be used with the aqueous medium. The processes beneficially result in Iron exchange that can approach 100% along with removal of cations (such as sodium, NH4, and H) from the zeolite. An Iron(III)-exchanged zeolite prepared according to the disclosed processes can include about 2,000 ppm or less of cation and about 1% by weight or greater of Iron(III). The disclosure also provides catalysts (e.g., SCR catalysts) and exhaust treatment systems including the Iron(III)-exchanged zeolite.

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