Invention Grant
- Patent Title: Catalyst support materials with oxygen storage capacity (OSC) and method of making thereof
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Application No.: US13996073Application Date: 2011-12-22
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Publication No.: US09387461B2Publication Date: 2016-07-12
- Inventor: Wei Wu , Yunkui Li , Jeffery Lachapelle
- Applicant: Wei Wu , Yunkui Li , Jeffery Lachapelle
- Applicant Address: US MI Ann Arbor
- Assignee: Pacific Industrial Development Corporation
- Current Assignee: Pacific Industrial Development Corporation
- Current Assignee Address: US MI Ann Arbor
- Agency: Brinks Gilson & Lione
- International Application: PCT/US2011/066715 WO 20111222
- International Announcement: WO2012/088373 WO 20120628
- Main IPC: B01J23/10
- IPC: B01J23/10 ; B01J23/63 ; B01J35/00 ; B01J35/10 ; B01J37/00 ; B01J37/02 ; B01J37/03 ; B01J21/06 ; B01J21/04 ; B01D53/94 ; B01J35/02

Abstract:
A new type of catalyst support with oxygen storage capacity (OSC) and methods of making the same are disclosed. The composition ratio is x(Ce1−wZrwO2):yM:zL:(1−x−y−z)Al2O3, where Ce1−wZrwO2 is the oxygen storage composition with stabilizer Zr02, molar ratio (w) in the range of 0 to about 0.8, and a weight ratio (x) of about 0.05 to about 0.8; M is an interactive promoter for oxygen storage capacity with a weight ratio (y) of 0 to about 0.10; and L is a stabilizer for the support Al2O3 with weight ratio (z) of from 0 to about 0.10. In some cases, M or L can act as both OSC promoter and thermal stabilizer. The weight percentage range of ceria-zirconia and other metal and rare earth oxides (x+y+z) is from about 5 to about 80% relative to total oxides. Combining platinum group metals (PGM) and adhesive with the catalyst supports, a new wash coat made therefrom is provided that comprises a mixture of catalyst support materials according to the relationship (a)RE-Ce—ZrO2+(3)CZMLA+(1−a−β)RE-Al2O3, where RE-Ce—ZrO2 is a commercial OSC material of rare earth elements stabilized ceria zirconia having a weight ratio (a) ranging from 0 to about 0.7; CZMLA is the catalyst support material of the present disclosure having a weight ratio (β) ranging from about 0.2 to about 1 such that (α+β)
Public/Granted literature
- US20130274096A1 CATALYST SUPPORT MATERIALS WITH OXYGEN STORAGE CAPACITY (OSC) AND METHOD OF MAKING THEREOF Public/Granted day:2013-10-17
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