In this work, the recovery of molybdenum(VI) (Mo) from aqueous solutions was carried out by solvent extraction (SX) using ammonium and phosphonium-based task-specific ionic liquids (TSILs) as extractants diluted in kerosene and two other hydrophobic room-temperature ionic liquids (RTILs). Four different TSILs were used as extractants: trioctylmethylammonium bis(2-ethylhexyl) phosphate [TOMA][D2EHP]; trioctylmethylammonium benzoate [TOMA][BA]; trihexyltetradecylphosphonium bis(2-ethylhexyl) phosphate [P_6,6,6,14][D2EHP]; and trihexyltetradecylphosphonium benzoate [P_6,6,6,14][BA]. These TSILs were synthesized to assess the effect of the cation and anion on the SX of Mo(VI). Experimental results indicated that high extraction percentages of Mo(VI) were obtained with all the synthesized TSILs. Besides that, the best cation was [TOMA]⁺ for all the diluents and [BA]⁻ was the best anion when kerosene and 1-octyl-3-methylimidazolium bis(trifluoromethylsulfonyl)imide, [omim][Tf₂N], were the diluents. Furthermore, the SX process using these ionic liquids followed an anion-exchange mechanism for kerosene and [omim][Tf₂N] as diluents. Finally, the stripping was successfully performed with a solution of ammonium carbonate, and the extent of stripping depended on the selected diluent.

中文翻译：

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任务特定的离子液体作为萃取剂，使用不同的工业离子液体作为稀释剂从水溶液中萃取钼（VI）

在这项工作中，使用铵和phospho基特定任务离子液体（TSIL）作为稀释剂在煤油和另外两个疏水室中稀释，通过溶剂萃取（SX）从水溶液中回收钼（VI）（Mo）。高温离子液体（RTIL）。四种不同的TSIL用作萃取剂：双（2-乙基己基）磷酸三辛基甲基铵[TOMA] [D2EHP]；苯甲酸三辛基甲基铵[TOMA] [BA]；双（2-乙基己基）磷酸三己基_{十四烷基phosph} [P _6,6,6,14 ] [D2EHP]; 和三己基_十四烷基苯甲酸_phosph [P _6,6,6,14] [BA]。合成了这些TSIL，以评估阳离子和阴离子对Mo（VI）SX的影响。实验结果表明，所有合成的TSIL均获得了较高的Mo（VI）提取率。除此之外，当煤油和1-辛基-3-甲基咪唑鎓双（三氟甲基磺酰基）酰亚胺[omim] [Tf ₂ N]分别存在时，所有稀释剂的最佳阳离子为[TOMA] ⁺，而[BA] ^-为最佳阴离子。稀释剂。此外，使用这些离子液体的SX工艺遵循阴离子交换机理，将煤油和[omim] [Tf ₂ N]用作稀释剂。最后，用碳酸铵溶液成功地进行了汽提，汽提的程度取决于所选择的稀释剂。