Solvent Extraction of p-Nitrophenol into Cyclohexane with Phosphines and Their Derivatives

Hirochika NAGANAWA; Haruaki MATSUURA; Yasushi OGIHARA; Satoshi KUSAKABE; Tatsuya SEKINE

doi:10.2116/analsci.6.287

Hirochika NAGANAWA, Haruaki MATSUURA, Yasushi OGIHARA, Satoshi KUSAKABE, Tatsuya SEKINE

著者情報

キーワード: Solvent extraction, p-nitrophenol, trioctylamine, trioctylphosphine, trioctylphosphine oxide, triphenylphosphine, triphenylphosphine oxide, triphenylphosphine sulfide, acid-base association, nonaqueous solvent, hydrogen-bonded complex

ジャーナルフリー

1990 年 6 巻 2 号 p. 287-289

DOI https://doi.org/10.2116/analsci.6.287

詳細

抄録

The solvent extraction of p-nitrophenol from aqueous acid solutions into cyclohexane with trioctylphosphine (TOP), trioctylphosphine oxide (TOPO), triphenylphosphine (TPP), triphenylphosphine oxide (TPPO) and triphenylphosphine sulfide (TPPS) was examined. The results were compared with those with trioctylamine (TOA). The extracted p-nitrophenol was found to form a 1:1 hydrogen-bonded associate with bases in the organic phase. The association
constant in the organic phase was greater in the order TOPO>TPPO>TOP>TOA>TPPS>TPP. The ability of an extractant for an acid is considered from its chemical properties as a base in the organic phase. It was concluded that it may be related to the association constant with the acid in the solvent.

責任著者(Corresponding author)

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