Crystallization of metal fluoride hydrates from mixed hydrofluoric and nitric acid solutions, part II: Iron (III) and nickel (II)
2010 (English)In: Journal of Crystal Growth, ISSN 0022-0248, E-ISSN 1873-5002, Vol. 312, no 16-17, 2358-2362 p.Article in journal (Refereed) Published
Crystallization of nickel fluoride hydrate from mixed pickle acid and the influence of Ni(II) on growth rate of beta-FeF3 center dot 3H(2)O have been studied. Iron and nickel crystallize into an unidentified Fe/Ni fluoride hydrate crystal having the overall mol ratio of Ni, Fe, and F equal to 1:2:8, which is in accordance with the number of fluoride ions needed to balance the positive charges of Ni and Fe. The most probable empirical formula of this material is (FeF3)(2)NiF2(H2O)(6-10). By seeded isothermal desupersaturation experiments, growth rate of beta-FeF3 center dot 3H(2)O crystals at 50 degrees C has been studied in a hydrofluoric acid and nitric acid solution containing Ni(II). It is found that the growth rate of beta-FeF3 center dot 3H(2)O is essentially uninfluenced by the presence of 4 g/kg Ni(II).
Place, publisher, year, edition, pages
2010. Vol. 312, no 16-17, 2358-2362 p.
Supersaturated solutions, Growth from solutions, Acids, Inorganic compounds
IdentifiersURN: urn:nbn:se:kth:diva-29439DOI: 10.1016/j.jcrysgro.2010.05.017ISI: 000280256400014ScopusID: 2-s2.0-77955277389OAI: oai:DiVA.org:kth-29439DiVA: diva2:397521
QC 201102152011-02-152011-02-022011-02-15Bibliographically approved