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Coupled substitution of NiO and TiO2 in hematite

Title
Coupled substitution of NiO and TiO2 in hematite
Authors
Park, BHKim, DS
Ewha Authors
김동수
SCOPUS Author ID
김동수scopus
Issue Date
1999
Journal Title
BULLETIN OF THE KOREAN CHEMICAL SOCIETY
ISSN
0253-2964JCR Link
Citation
vol. 20, no. 2, pp. 195 - 198
Publisher
KOREAN CHEMICAL SOC
Indexed
SCI; SCIE; SCOPUS; KCI WOS
Abstract
The partitionings of NiO and of NiO and TiO2 between hematite and Na2O 2B(2)O(3) melts were studied by the flux growth method as a function of solute concentration. The substitution mechanisms of NiO and/or TiO2 in -Fe2O3 lattice were discussed based on the concentration dependence of the distribution coefficients. The substitution of Ni2+ ion for Fe3+ was accompanied by the charge compensating oxygen ion vacancies, while the coupled substitution of Ni2+ and Ti4+ ions for Fe3+ was accompanied by the formation of Fe2+ ion, which was confirmed by chemical analysis.
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엘텍공과대학 > 환경공학전공 > Journal papers
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