%0 Journal Article %A Quijada-Maldonado, Esteban %A Sánchez, Felipe %A Pérez, Bárbara %A Tapia, Ricardo %A Romero, Julio %D 2018 %T Task-Specific Ionic Liquids as Extractants for the Solvent Extraction of Molybdenum(VI) from Aqueous Solution Using Different Commercial Ionic Liquids as Diluents %U https://acs.figshare.com/articles/journal_contribution/Task-Specific_Ionic_Liquids_as_Extractants_for_the_Solvent_Extraction_of_Molybdenum_VI_from_Aqueous_Solution_Using_Different_Commercial_Ionic_Liquids_as_Diluents/5820702 %R 10.1021/acs.iecr.7b04147.s001 %2 https://ndownloader.figshare.com/files/10294920 %K BA %K phosphonium-based task-specific %K diluents %K 2EHP %K solution %K ammonium carbonate %K trioctylmethylammonium %K TSIL %K Mo %K bi %K Aqueous Solution %K omim %K Solvent Extraction %K Different Commercial %K trihexyltetradecylphosphonium benzoate %K kerosene %K phosphate %K extraction percentages %K RTIL %K cation %K extractant %K anion-exchange mechanism %K SX process %K TOMA %X 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 [P6,6,6,14]­[D2EHP]; and trihexyltetradecylphosphonium benzoate [P6,6,6,14]­[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. %I ACS Publications