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The News of Altai State University
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3(59)2008
Chemistry

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B.I. Petrov, S.V. Shuliak

Formation of Addukt From Complex and Heksildiantypyrilmethane Salt during Extraсtion of Zirconium (IV) From Chloride Solutions

Using the method of physics-chemical analysis of threefold systems [ZrACl4]–(AH)Cl3 not water solvent where A - heksildiantipirilmetan (I) the formation of adduct [ZrACl4]•(AH)Cl (II) in the chloroform (III) fluid is established. Character of viscosity izomaliariane solutions change confirms the structure II. The method of solubility finds a constant of reaction [ZrACl4]–(AH)Cl↔[ZrACl4]–(AH)Cl•K0,95=0,24±0,03. Poor soluble in III and concentrated HCl solutions the complex [ZrACl4] (IV) is deposited at extraction of Zr (IV) macroquantity if there is no surplus I in III. Having I in plenty soluble in III adduct is formed, and Zr (IV) is taken in an organic phase completely (> 99%). In dichloretan and nitrobenzol fluid II is absent, however the increase of IV solubility provides extraction of Zr (IV) from strong solutions HCl in a I stoichiometric quantity.

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