Oxalic Acid → Vanadium hydroxide oxide phosphate

HRID 463534

Reaction equation

HRID 463534 reaction equation
[P].[V:2].[P:3](=[O:7])([OH:6])([OH:5])[OH:4].C(O)(=O)C(O)=[O:10].[O-2:14].[O-2].[O-2].[O-2].[O-2].[V+5].[V+5]>O>[OH-:4].[OH-:10].[OH-:14].[OH-:4].[OH-:4].[O-2:4].[O-2:4].[O-2:4].[O-2:4].[O-2:4].[O-:5][P:3]([O-:7])([O-:6])=[O:4].[O-:5][P:3]([O-:7])([O-:6])=[O:4].[O-:5][P:3]([O-:7])([O-:6])=[O:4].[O-:5][P:3]([O-:7])([O-:6])=[O:4].[O-:5][P:3]([O-:7])([O-:6])=[O:4].[V:2].[V:2].[V:2].[V:2].[V:2].[V:2]

Participants

7

Reactant 5

HCID 971Oxalic AcidHCID 1004Phosphoric AcidHCID 23990VanadiumHCID 5462309PhosphorusHCID 178419084HCID 178419084, compound

Product 1

HCID 6455080Vanadium hydroxide oxide phosphate

Reagents, catalysts & solvents 1

HCID 962WaterSolvent2×

Conditions

Temperature
80 °C

Procedure

As an example of a starting material suitable for an amorphous complex oxide containing phosphorus and vanadium as the major constituents, a vanadyl phosphate solution was prepared. In 3.0 kg of deionized water, 2.956 kg of 85% phosphoric acid was dissolved, and 2.55 kg of oxalic acid (H2C2O4.2H2O) was further added and dissolved under heating. The solution was heated to 80° C., and 1.842 kg of vanadium pentoxide was gradually added and dissolved while paying a careful attention to the generation of bubbles. Then, the heating was continued for further 10 minutes under the boiling condition to complete the reduction. The solution was cooled, and deionized water was added to adjust the total amount to 10.00 kg, whereby the second component was obtained.

Workup

  1. dissolutiondissolved
  2. temperatureunder heating
  3. dissolutiondissolved
  4. temperatureThe solution was cooled
  5. additionwas added
  6. customwas obtained

Sources & evidence

ORD record
ord-36d45b67db0c4a2e94a2d0d00f0d23dd
Source dataset
uspto-grants-1985_05
Patent number
US04520127

Linked notes

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