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The extraction of polymolybdates(VI) from aqueous solution by tri-n-octylamine hydrochloride in chloroform

Authors
Journal
Journal of Inorganic and Nuclear Chemistry
0022-1902
Publisher
Elsevier
Publication Date
Volume
36
Issue
8
Identifiers
DOI: 10.1016/0022-1902(74)80529-4
Disciplines
  • Chemistry

Abstract

Abstract Iso-polymolybdates and protonated species with the general formula H a Mo n O b z− were extracted from aqueous acid solutions by tri- n-octylamine hydrochloride in chloroform. The ratio n: z (the R value) was determined by chemical analysis, and vapour pressure lowering studies on the organic phase allowed direct calculation of n and z. Continuous polymerization in the pH range 1–5 was observed with ions of n = 6 and 10 persisting through the pH ranges 4–5 and 2–2·5, respectively. Two possible schemes for the formation of 6-ions and the possible conversion of these to 7-, 8- and 10-ions are discussed.

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