MY191039A - Zirconia-based compositions for use as three way catalysts - Google Patents

Zirconia-based compositions for use as three way catalysts

Info

Publication number
MY191039A
MY191039A MYPI2018000562A MYPI2018000562A MY191039A MY 191039 A MY191039 A MY 191039A MY PI2018000562 A MYPI2018000562 A MY PI2018000562A MY PI2018000562 A MYPI2018000562 A MY PI2018000562A MY 191039 A MY191039 A MY 191039A
Authority
MY
Malaysia
Prior art keywords
cerium
based mixed
zirconium based
mixed oxide
zirconium
Prior art date
Application number
MYPI2018000562A
Other languages
English (en)
Inventor
Deborah Jayne Harris
David Alastair Scapens
Original Assignee
Magnesium Elektron Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=55130293&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=MY191039(A) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Magnesium Elektron Ltd filed Critical Magnesium Elektron Ltd
Publication of MY191039A publication Critical patent/MY191039A/en

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    • C01—INORGANIC CHEMISTRY
    • C01G—COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
    • C01G25/00—Compounds of zirconium
    • C01G25/02—Oxides
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01G—COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
    • C01G25/00—Compounds of zirconium
    • C01G25/006—Compounds containing zirconium, with or without oxygen or hydrogen, and containing two or more other elements
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    • B01D53/92—Chemical or biological purification of waste gases of engine exhaust gases
    • B01D53/94—Chemical or biological purification of waste gases of engine exhaust gases by catalytic processes
    • B01D53/9404—Removing only nitrogen compounds
    • B01D53/9409—Nitrogen oxides
    • B01D53/9413—Processes characterised by a specific catalyst
    • B01D53/9418—Processes characterised by a specific catalyst for removing nitrogen oxides by selective catalytic reduction [SCR] using a reducing agent in a lean exhaust gas
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    • B01D53/92—Chemical or biological purification of waste gases of engine exhaust gases
    • B01D53/94—Chemical or biological purification of waste gases of engine exhaust gases by catalytic processes
    • B01D53/9445—Simultaneously removing carbon monoxide, hydrocarbons or nitrogen oxides making use of three-way catalysts [TWC] or four-way-catalysts [FWC]
    • B01D53/945—Simultaneously removing carbon monoxide, hydrocarbons or nitrogen oxides making use of three-way catalysts [TWC] or four-way-catalysts [FWC] characterised by a specific catalyst
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    • B01J13/0004—Preparation of sols
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