Invention Grant
- Patent Title: Catalyzed soot filter with reduced ammonia oxidation
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Application No.: US16869622Application Date: 2020-05-08
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Publication No.: US11486288B2Publication Date: 2022-11-01
- Inventor: Kevin Hallstrom , David Youngren , Yuejin Li
- Applicant: BASF Corporation
- Applicant Address: US NJ Florham Park
- Assignee: BASF Corporation
- Current Assignee: BASF Corporation
- Current Assignee Address: US NJ Florham Park
- Agent Baltazar Gomez
- Main IPC: F01N3/28
- IPC: F01N3/28 ; B01D53/94 ; B01J23/89 ; B01J29/76 ; B01J35/04 ; B01J37/02 ; F01N3/035 ; F01N3/08 ; F01N3/20

Abstract:
The present disclosure is directed to a system for treating an exhaust gas stream from an engine, which includes a diesel oxidation catalyst (DOC) located downstream of the engine and adapted for oxidation of hydrocarbons and carbon monoxide, an injector adapted for the addition of a reductant to the exhaust gas stream located downstream of the DOC, a catalyzed soot filter (CSF) located downstream of the injector, and a selective catalytic reduction component adapted for the oxidation of nitrogen oxides located downstream of the CSF. The CSF is adapted for oxidizing hydrocarbons and includes a selective oxidation catalyst composition on a filter with high selectivity ratio for hydrocarbon oxidation:ammonia oxidation (e.g., at least 0.6).
Public/Granted literature
- US20200263586A1 CATALYZED SOOT FILTER WITH REDUCED AMMONIA OXIDATION Public/Granted day:2020-08-20
Information query
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