Thio β-diketonates of lanthanides—I: Solvent extraction behavior of neodymium (III) with 1,1,1-trifluoro-4-(2-thienyl)-4-mercapto but-3-en-2-one (HSTTA) as the extractant
作者： K. Nag , M. Chaudhury
DOI: 10.1016/0022-1902(76)80415-0
关键词:
摘要: The solvent extraction behavior of Nd3+ using thiothenoyltrifluoroacetone (HSTTA) as extractant has been described. distribution constant (PHA) and the dissociation (Ka) reagent in aqueous-organic phases have determined. order PHA values with respect to organic solvents are chloroform > cyclohexane benzene. Among three trend is benzene chloroform. process predominantly governed by following reaction equilibrium Nd3+aq+3 HSTTA(o)⇋Nd(STTA)3(o)+3H+(aq) The mixed for (K3,0∗), biphase stability (PMA . β3) pH 50% computed each systems. cause superiority HTTA over HSTTA an discussed.
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