Invention Grant
- Patent Title: Application of synergized-PGM with ultra-low PGM loadings as close-coupled three-way catalysts for internal combustion engines
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Application No.: US15586847Application Date: 2017-05-04
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Publication No.: US10533472B2Publication Date: 2020-01-14
- Inventor: Zahra Nazarpoor , Stephen J. Golden , Maxime Launois
- Applicant: Clean Diesel Technologies, Inc.
- Applicant Address: US CA Oxnard
- Assignee: CDTI Advanced Materials, Inc.
- Current Assignee: CDTI Advanced Materials, Inc.
- Current Assignee Address: US CA Oxnard
- Agent Thaddius J. Carvis
- Main IPC: F01N3/08
- IPC: F01N3/08 ; F01N3/10 ; B01D53/94 ; B01J23/00 ; B01J23/42 ; B01J23/46 ; F01N13/00 ; B01J23/755

Abstract:
Synergized platinum group metals (SPGM) with ultra-low PGM loadings employed as close-coupled (CC) three-way catalysts (TWC) systems with varied material compositions and configurations are disclosed. SPGM CC catalysts in which ZPGM compositions of binary or ternary spinel structures supported onto support oxides are coupled with commercialized PGM UF catalysts and tested under Federal Test Procedure FTP-75 within TGDI and PI engines. The performance of the TWC systems including SPGM CC (with ultra-low PGM loadings) catalyst and commercialized PGM UF catalyst is compared to the performance of commercialized PGM CC and PGM UF catalysts. The disclosed TWC systems indicate that SPGM CC TWC catalytic performance is comparable or even exceeds high PGM-based conventional TWC catalysts, with reduced tailpipe emissions.
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