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.

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.

公开(公告)号：US20190308172A1

公开(公告)日：2019-10-10

申请号：US16302577

申请日：2017-05-22

Applicant: BASF Corporation

Inventor： Weiqing Joe Zou ,  David James Brockway ,  Peter Pfab ,  Matthias Georg Schwab

IPC: B01J23/26 ,  B01J35/10 ,  B01J35/00 ,  B01J37/03 ,  B01J37/02 ,  B01J35/02 ,  B01J37/16

Abstract: Disclosed herein is a chromium oxide catalyst composition having reduced levels of chromium (VI), methods of making a chromium oxide catalyst composition and system, and illustrative uses of the chromium oxide catalyst composition and system. The catalyst disclosed may be a gel and may comprise chromium (III) oxide and chromium (VI) oxide at an amount of about 10,000 ppm or less based on total chromium oxide contents in the chromium oxide catalyst composition.

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.

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.

公开(公告)号：US20220314203A1

公开(公告)日：2022-10-06

申请号：US17839906

申请日：2022-06-14

Applicant: BASF Corporation

Inventor： Weiqing Joe Zou ,  David James Brockway ,  Peter Pfab ,  Matthias Georg Schwab

IPC: B01J23/26 ,  B01J35/00 ,  B01J35/02 ,  B01J35/10 ,  B01J37/02 ,  B01J37/03 ,  B01J37/16

Abstract: Disclosed herein is a chromium oxide catalyst composition having reduced levels of chromium (VI), methods of making a chromium oxide catalyst composition and system, and illustrative uses of the chromium oxide catalyst composition and system. The catalyst disclosed may be a gel and may comprise chromium(III) oxide and chromium(VI) oxide at an amount of about 10,000 ppm or less based on total chromium oxide contents in the chromium oxide catalyst composition.