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

Abstract

Regularities of extraction of rhenium (VII) melt tetraoctyl-ammonium bromide in a mixture of higher alcohols and paraffin 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 paraffin. The composition of the complex, calculated, was 3.37±0.4.

Keywords

• bromide tetraoctylammonium
• extraction
• higher alcohols
• paraffin
• rhenium