Ammonium Oxalate → Cerous oxalate

HRID 10115

Reaktionsgleichung

Reaktionsgleichung von HRID 10115
[C:1]([O-:6])(=[O:5])[C:2]([O-:4])=[O:3].[NH4+].[NH4+].[Cl-].[Ce+3:10].[Cl-].[Cl-].[O-2].[Ce+3].[O-2].[O-2].[Ce+3]>>[C:1]([O-:6])(=[O:5])[C:2]([O-:4])=[O:3].[Ce+3:10].[C:1]([O-:6])(=[O:5])[C:2]([O-:4])=[O:3].[C:1]([O-:6])(=[O:5])[C:2]([O-:4])=[O:3].[Ce+3:10]

Komponenten

4

Edukt 3

HCID 14213Ammonium OxalateHCID 24636Cerium(III) chlorideHCID 9905479Cerium oxide

Produkt 1

HCID 165565Cerous oxalate

Reaktionsbedingungen

Temperatur
1500 °C

Versuchsvorschrift

A cerium oxalate powder was prepared by adding an aqueous solution of ammonium oxalate to an aqueous solution of cerium chloride under stirring, causing the precipitation of cerium oxalate, filtering, and drying. The powder was ground with a jet-mill to obtain a starting material powder with a mean particle diameter of about 1 μm. The powder was ejected at a feed rate of 5 kg/hr through a nozzle with a cross-sectional area of the opening of 0.13 cm2 together with air at a flow rate of 200 L/min as a carrier gas into a reaction tube heated to a temperature of 1500° C. in an electric furnace, passed through the reaction tube, while maintaining the dispersion concentration of the powder, and heated. The melting point of cerium oxide is about 1950° C. The dispersion concentration of the starting material powder in the gas phase inside the reaction tube was 0.4 g/L, and V/S was 1500. The light-yellow powder thus produced was collected with a bag filter.

Aufarbeitung

  1. customthe precipitation of cerium oxalate
  2. filtrationfiltering
  3. customdrying
  4. customto obtain a starting material powder with a mean particle diameter of about 1 μm
  5. customThe powder was ejected at a feed rate of 5 kg/hr through a nozzle with a cross-sectional area of the opening of 0.13 cm2 together with air at a flow rate of 200 L/min as a carrier gas into a reaction tube
  6. temperaturewhile maintaining the dispersion concentration of the powder
  7. temperatureheated
  8. customis about 1950° C
  9. customThe light-yellow powder thus produced
  10. customwas collected with a bag
  11. filtrationfilter

Quellen und Nachweise

ORD-Eintrag
ord-c817a0ea0ac64877a846f4b006c3f5c4
Quelldatensatz
uspto-grants-2006_08
Patentnummer
US07094289B2

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