Title:
SYNERGIZED PGM CATALYST SYSTEMS INCLUDING RHODIUM FOR TWC APPLICATION
Document Type and Number:
WIPO Patent Application WO/2016/100352
Kind Code:
A3
Abstract:
Synergized Platinum Group Metals (SPGM) catalyst system for TWC application is disclosed. Disclosed SPGM catalyst system may include a washcoat that includes Cu-Mn spinel structure, supported on doped Zr02, and an overcoat that includes PGM, such as Rhodium (Rh) supported on carrier material oxides, such as alumina. SPGM catalyst system shows significant improvement in nitrogen oxide reduction performance under lean and also rich operating conditions. Furthermore, disclosed SPGM catalyst systems are found to have enhanced fresh and aged catalytic activity compared to PGM catalyst system, showing that there is a synergistic effect between PGM catalyst, such as Rh, and Cu-Mn spinel within disclosed SPGM catalyst system, which help in activity and thermal stability of disclosed SPGM catalyst.
Inventors:
NAZARPOOR ZAHRA (US)
GOLDEN STEPHEN J (US)
GOLDEN STEPHEN J (US)
Application Number:
PCT/US2015/065836
Publication Date:
August 18, 2016
Filing Date:
December 15, 2015
Export Citation:
Assignee:
CLEAN DIESEL TECH INC (US)
International Classes:
B01J23/40; B01D53/94; B01J23/34; B01J23/72
Foreign References:
| US8845987B1 | 2014-09-30 | |||
| US20140271387A1 | 2014-09-18 | |||
| US4188309A | 1980-02-12 | |||
| US4367162A | 1983-01-04 | |||
| US20140274674A1 | 2014-09-18 | |||
| US6375910B1 | 2002-04-23 |
Attorney, Agent or Firm:
BALTS, Timothy, J. et al. (Bank of America Plaza101 South Tryon Street, Suite 400, Charlotte NC, US)
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