Potassium Fluoride → Potassium hexafluoraluminate

HRID 506412Notizen

Reaktionsgleichung

Reaktionsgleichung von HRID 506412
[F-:1].[K+:2].[Al:3]>O>[F-:1].[F-:1].[F-:1].[F-:1].[F-:1].[F-:1].[Al+3:3].[K+:2].[K+:2].[K+:2]

Komponenten

4

Edukt 2

HCID 522689Potassium FluorideHCID 5359268Aluminum

Produkt 1

HCID 160989Potassium hexafluoraluminate

Reagenzien, Katalysatoren, Lösungsmittel 1

HCID 962WaterLösungsmittel

Versuchsvorschrift

Repeated treatments were made by a solution of HF and KF at a molar ratio of 1:1 being added to suspensions of aluminium powder (Carlfors Bruk A100) in pure water at temperatures from 10° C. to 80° C. The total concentration of fluoride in the treatment solutions varied between 0.1 and 5 M and the total amount of added fluoride was 0.1-5% of the molar amount of the aluminium. The fluoride solution was added to the suspension of aluminium powder under vigorous agitation, and the powder was filtered off and dried as soon as all fluoride solution had been added. A surface layer of tripotassium hexafluoroaluminate formed on the particles. FIG. 4 shows the TG graph for the thus treated powder where the total amount of added fluoride was 2%.

Aufarbeitung

  1. concentrationThe total concentration of fluoride in the treatment solutions
  2. additionThe fluoride solution was added to the suspension of aluminium powder under vigorous agitation
  3. filtrationthe powder was filtered off
  4. dry with materialdried as soon as all fluoride solution
  5. additionhad been added

Quellen und Nachweise

ORD-Eintrag
ord-2bc62d0257cc4af88129abd3f07cf5d0
Quelldatensatz
uspto-grants-2010_08
Patentnummer
US07785430B2

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