Reaction #481596

ord-83c72e353ec04bd482eb10dab9a2277c

Reaction equation

[OH-].[OH-].[OH-].[OH-].[Zr+4]
zirconium hydroxide
O=[N+]([O-])O
nitric acid
[Ce]
cerium
[La]
lanthanum
[OH-].[OH-].[OH-].[OH-].[Zr+4]
zirconium hydroxide
ClOCl.[Zr]
zirconium oxychloride
→
[O-2].[O-2].[Zr+4]
zirconium oxide
[Ce+3].[Ce+3].[O-2].[O-2].[O-2]
cerium oxide
[La+3].[La+3].[O-2].[O-2].[O-2]
lanthanum oxide

Reactants

[OH-].[OH-].[OH-].[OH-].[Zr+4]
zirconium hydroxide
O=[N+]([O-])O
nitric acid
[Ce]
cerium
[La]
lanthanum
[OH-].[OH-].[OH-].[OH-].[Zr+4]
zirconium hydroxide
—
resultant mixture
ClOCl.[Zr]
zirconium oxychloride

Reagents

None

Conditions

Detailed conditions
See reaction.notes.procedure_details.

Workup

  1. 1
    workup.ADDITIONmixing them together
  2. 2
    workup.ADDITIONby addition of an alkali,
  3. 3
    Washwashing
  4. 4
    Otherdrying at 120° C. for two hours

Procedure

A zirconium-cerium-lanthanum composite oxide (Powder A1) was obtained by hydrolyzing a zirconium oxychloride solution thereby obtaining zirconium hydroxide, adding an aqueous nitric acid solution of cerium and lanthanum to the zirconium hydroxide and mixing them together, neutralizing the resultant mixture by addition of an alkali, washing, drying at 120° C. for two hours and calcining at 700° C. for one hour the product of neutralization, with the relevant components used in amounts calculated to form a weight ratio of 40 g of zirconium oxide, 20 g of cerium oxide, and 15 g of lanthanum oxide.

Source

DOI: 10.6084/m9.figshare.5104873.v1Patent: US06602479B2uspto-grants-2003_08