Citric Acid → Sodium Hydroxide

HRID 1672084

Reaktionsgleichung

Reaktionsgleichung von HRID 1672084
[S:1]([O-:5])([O-:4])(=[O:3])=[O:2].[Co+2:6].C(O)(=O)CC(CC(O)=O)(C(O)=O)[OH:10].[OH-:20].[Na+:21].OO.[OH-].[Co+2].[OH-]>>[S:1]([O-:5])([O-:4])(=[O:3])=[O:2].[Co+2:6].[OH-:10].[Na+:21].[O-2:20].[O-2:2].[O-2:2].[O-2:2].[Co+2:6].[Co+3:6].[Co+3:6]

Komponenten

8

Edukt 5

HCID 311Citric AcidHCID 784Hydrogen PeroxideHCID 14798Sodium HydroxideHCID 24965Cobalt SulfateHCID 10129900Cobalt hydroxide

Produkt 3

HCID 14798Sodium HydroxideHCID 24965Cobalt SulfateHCID 6432046Cobalt oxide

Versuchsvorschrift

A cobalt sulfate solution (1 mol/L) and sodium hydroxide solution (5 mol/L) were prepared respectively. To the cobalt sulfate solution, citric acid was added. The resultant mixture and the sodium hydroxide solution were simultaneously added into a reactor by a cocurrent method, and allowed to react at 50° C. with pH value at 10.5. Hydrogen peroxide was charged uniformly as an oxidant, and the amount thereof was 1.3 times that needed for completely oxidizing the generated cobalt hydroxide. After reaction completion, the solution was aged for 10 hrs at a constant temperature, dried at 110° C., and roasted at 350° C. for 10 hrs to yield spherical tricobalt tetraoxide with diameter D50 of 7.2 μm and tap density of 2.7 g/cm3.

Aufarbeitung

  1. customto react at 50° C. with pH value at 10.5
  2. customAfter reaction completion
  3. customdried at 110° C.
  4. waitroasted at 350° C. for 10 hrs

Quellen und Nachweise

ORD-Eintrag
ord-93cfdbe2bfe940bda39d27826837628a
Quelldatensatz
uspto-grants-2011_08
Patentnummer
US07998452B2

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