公开(公告)号：US20230372905A1

公开(公告)日：2023-11-23

申请号：US18031458

申请日：2021-10-15

Applicant: BASF Corporation

Inventor： M. Shahjahan Kazi ,  Shiang Sung ,  Claire Chunjuan Zhang ,  Xiaolai Zheng ,  Sandip D. Shah ,  Andrew Thoms

IPC: B01J23/42 ,  B01J21/04 ,  B01J23/44 ,  B01D53/92 ,  B01J35/10 ,  F01N3/20 ,  B01D53/94

CPC classification number: B01J23/42 ,  B01J21/04 ,  B01J23/44 ,  B01D53/925 ,  B01J35/1061 ,  B01J35/1019 ,  B01J35/1014 ,  F01N3/2066 ,  B01D53/945 ,  F01N2370/02 ,  F01N2330/06 ,  B01D2258/012 ,  B01D2255/1021 ,  B01D2255/1023 ,  B01D2257/40 ,  B01D2257/502 ,  B01D2257/702

Abstract: The present disclosure relates to oxidation catalyst compositions for use in a close-coupled diesel oxidation catalyst (ccDOC) application, in which the ccDOC can function as a heat generator under high space velocity conditions. The oxidation catalyst compositions include a high surface area support material doped with at least one metal oxide, and a platinum group metal (PGM) supported on the doped high surface area support material.

公开(公告)号：US11268420B2

公开(公告)日：2022-03-08

申请号：US16971236

申请日：2019-02-18

Applicant: BASF Corporation

Inventor： Kenneth E. Voss ,  Kevin A. Hallstrom ,  Sandip D. Shah ,  David M. Youngren ,  Andrew Thoms ,  M. Shahjahan Kazi ,  Robert Dorner

IPC: F01N3/035 ,  F01N3/10 ,  F01N3/20 ,  B01J23/56 ,  B01J29/72

Abstract: A system for treatment of an exhaust gas stream from an engine is provided, containing an upstream selective catalytic reduction (SCR) catalyst, which receives the exhaust gas stream without any intervening catalyst, a diesel oxidation catalyst (DOC) positioned downstream thereof; a catalyzed soot filter (CSF) downstream of the diesel oxidation catalyst; a second SCR catalyst positioned downstream of the catalyzed soot filter; and an ammonia oxidation (AMOx) catalyst. The application also describes use of such systems to reduce nitrogen oxides (NOx) and hydrocarbons (HC) in an exhaust gas stream.

公开(公告)号：US20210079826A1

公开(公告)日：2021-03-18

申请号：US16971236

申请日：2019-02-18

Applicant: BASF Corporation

Inventor： Kenneth E. Voss ,  Kevin A. Hallstrom ,  Sandip D. Shah ,  David M. Youngren ,  Andrew Thoms ,  M. Shahjahan Kazi ,  Robert Dorner

IPC: F01N3/20 ,  B01J23/56 ,  B01J29/72 ,  F01N3/035 ,  F01N3/10

Abstract: A system for treatment of an exhaust gas stream from an engine is provided, containing an upstream selective catalytic reduction (SCR) catalyst, which receives the exhaust gas stream without any intervening catalyst, a diesel oxidation catalyst (DOC) positioned downstream thereof; a catalyzed soot filter (CSF) downstream of the diesel oxidation catalyst; a second SCR catalyst positioned downstream of the catalyzed soot filter; and an ammonia oxidation (AMOx) catalyst. The application also describes use of such systems to reduce nitrogen oxides (NOx) and hydrocarbons (HC) in an exhaust gas stream.