CA3002321C - Structured zirconium solutions - Google Patents

Structured zirconium solutions Download PDF

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Publication number
CA3002321C
CA3002321C CA3002321A CA3002321A CA3002321C CA 3002321 C CA3002321 C CA 3002321C CA 3002321 A CA3002321 A CA 3002321A CA 3002321 A CA3002321 A CA 3002321A CA 3002321 C CA3002321 C CA 3002321C
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Prior art keywords
solution
sol
zirconium
temperature
molar ratio
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CA3002321A
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English (en)
French (fr)
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CA3002321A1 (en
Inventor
David Alastair SCAPENS
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Magnesium Elektron Ltd
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Magnesium Elektron Ltd
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    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01G—COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
    • C01G25/00—Compounds of zirconium
    • C01G25/02—Oxides
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    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J21/00—Catalysts comprising the elements, oxides, or hydroxides of magnesium, boron, aluminium, carbon, silicon, titanium, zirconium, or hafnium
    • B01J21/06—Silicon, titanium, zirconium or hafnium; Oxides or hydroxides thereof
    • B01J21/066—Zirconium or hafnium; Oxides or hydroxides thereof
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    • C01G25/006—Compounds containing zirconium, with or without oxygen or hydrogen, and containing two or more other elements
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    • B01D53/9409—Nitrogen oxides
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    • 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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