COLLOID STRUCTURES FORMED IN EXTRACTION SYSTEMS WITH ORGANOPHOSPHORUS EXTRACTANTS

摘要

Colloid structures, such as organogels, microemulsions, liquid crystals and amorphous sediments, found in extraction systems with organophosphorus extractants are discussed. Micellar organogels, microemulsions and liquid crystals are shown in the system sodium di(2-ethylhexyl)phosphate/decane/water. The formation of crystalline organogels and amorphous sediments was studied in the systems di(2-ethylhexyl)phosphoric acid/copper hydroxide/ hydrocarbon/water and di(2-ethylhexyl)phosphoric acid/neodymium hydroxide/ decane/water. Concentration regions and Theological properties of the structures were investigated. Properties of emulsions, stabilized by disperse structures of copper and neodymium di(2-ethylhexyl)phosphates were studied. Some ways of prevention of disperse structures formation in systems with organophosphorus extractants are discussed.