Oxalic Acid → Zirconium phosphate

HRID 1939850Notes

Reaction equation

HRID 1939850 reaction equation
C(O)(=O)C(O)=O.[N+]([O-])(O)=O.[N+]([O-])(O)=O.O=[Zr:16].[N+]([O-])([O-])=O.[Na+].[P:22](=[O:26])([OH:25])([OH:24])[OH:23].[OH-].[Na+]>>[P:22]([O-:26])([O-:25])([O-:24])=[O:23].[Zr+4:16].[P:22]([O-:26])([O-:25])([O-:24])=[O:23].[P:22]([O-:26])([O-:25])([O-:24])=[O:23].[P:22]([O-:26])([O-:25])([O-:24])=[O:23].[Zr+4:16].[Zr+4:16]

Participants

6

Reactant 5

HCID 971Oxalic AcidHCID 1004Phosphoric AcidHCID 14798Sodium HydroxideHCID 24268Sodium NitrateHCID 83761Zirconyl nitrate

Product 1

HCID 160986Zirconium phosphate

Procedure

Oxalic acid is added to an aqueous solution of zirconium oxynitrate and sodium nitrate with stirring and then phosphoric acid is further added. The reaction mixture is adjusted to pH 3.5 with an aqueous sodium hydroxide solution and refluxed with heating for 78 hours. The precipitate is subjected to filtration, washing with water, drying and grinding to obtain zirconium phosphate [NaZr2 (PO4)3 ] having a network structure. The product is immersed in an aqueous solution containing silver ion at a suitable concentration to obtain the compound represented by the formula [1].

Workup

  1. temperaturerefluxed
  2. temperaturewith heating for 78 hours
  3. filtrationThe precipitate is subjected to filtration
  4. washwashing with water
  5. customdrying
  6. customgrinding

Sources & evidence

ORD record
ord-a969be2cb21343c2920c2667e40cbbb0
Source dataset
uspto-grants-1997_12
Patent number
US05698229

Reaction notes

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