Extraction of rhenium (VII) by tetraoctylammonium bromide mixed with low-melting thinners

Abstract

Regularities of extraction of rhenium (VII) melt tetraoctylammonium bromide in a mixture of higher alcohols and paraffi n were determined. Quantitative extraction of measurements obtained in the range of pH of the aqueous phase 1.5 -2.0 was carried out. It was shown that the degree of extraction of rhenium is reduced during the transition from sulfuric to nitric acid. The introduction of extracting 20 % of higher alcohols improved the solubility of the extracted complex in paraffi n. The composition of the complex, calculated, was 3.37 ± 0.4.