Abstract
1. 1. A study was made of liquid extraction of aromatic hydrocarbons from their mixtures with non-aromatic hydrocarbons. It was shown that estraction is a process of multi-stage acid-basic interaction between the extraction reagent and aromatic hydrocarbon. A coordination-ionic complex is the product of this interaction which separates into an individual phase, the extract phase. The formation of an extract phase is due both to charge separation in the complex and its ability to undergo acid-basic interaction with the surrounding medium. 2. 2. An extraction mechanism is proposed which takes into account the donor-acceptor interaction of hydrocarbons with extraction reagents, solvation (and resolvation) of ionic pairs and their decomposition to solvated ions.
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