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The possibility of separating homologous phenols by extraction with aqueous sodium hydroxide Ting, Judy Yeh-Ping

Abstract

The possibility of separating homologous phenols by liquid-liquid extraction with aqueous sodium hydroxide has been considered. In particular, phenol-o-cresol mixtures have received attention and the system phenol, o-cresol, water, and sodium hydroxide has been defined both with respect to the boundary of the two-phase region and the phase equilibria involved. Some qualitative and quantitative considerations have been given to possible extraction operations. It is concluded that extraction in the quaternary system is likely to be attractive only in the case of particular alkaline phenolic feeds.

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