Feasibility of ionic liquids as alternative separation media for industrial solvent extraction processes

被引：261
作者：
Nakashima, K [1 ]
Kubota, F [1 ]
Maruyama, T [1 ]
Goto, M [1 ]
机构：
[1] Kyushu Univ, Grad Sch Engn, Dept Appl Chem, Fukuoka 8128581, Japan
来源：
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH | 2005年 / 44卷 / 12期
关键词：
D O I：
10.1021/ie049050t
中图分类号：
TQ [化学工业];
学科分类号：
0817 ;
摘要：
Extraction of rare earth metals into ionic liquids (ILs) from aqueous solutions was investigated using octyl(phenyl)-N,N-diisobutylcarbamoylmethyl phosphine oxide (CMPO) as an extractant. Use of ILs greatly enhanced the extraction efficiency and selectivity of CMPO for metal ions compared to when n-dodecane was used as the extracting solvent. The extraction mechanism has been studied by slope analysis and extraction tests, and these confirmed that the metal extraction proceeds via a cation-exchange mechanism. Furthermore, stripping of metals from ILs into an aqueous phase by complexing agents and recycling of the extracting ILs phase was successfully accomplished.
引用
收藏
页码：4368 / 4372
页数：5
相关论文
共 36 条
  • [1] Characterizing ionic liquids on the basis of multiple solvation interactions
    Anderson, JL
    Ding, J
    Welton, T
    Armstrong, DW
    [J]. JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2002, 124 (47) : 14247 - 14254
  • [2] Examination of ionic liquids and their interaction with molecules, when used as stationary phases in gas chromatography
    Armstrong, DW
    He, LF
    Liu, YS
    [J]. ANALYTICAL CHEMISTRY, 1999, 71 (17) : 3873 - 3876
  • [3] Green processing using ionic liquids and CO2
    Blanchard, LA
    Hancu, D
    Beckman, EJ
    Brennecke, JF
    [J]. NATURE, 1999, 399 (6731) : 28 - 29
  • [4] Hydrophobic, highly conductive ambient-temperature molten salts
    Bonhote, P
    Dias, AP
    Papageorgiou, N
    Kalyanasundaram, K
    Gratzel, M
    [J]. INORGANIC CHEMISTRY, 1996, 35 (05) : 1168 - 1178
  • [5] Branco LC, 2002, ANGEW CHEM INT EDIT, V41, P2771, DOI 10.1002/1521-3773(20020802)41:15<2771::AID-ANIE2771>3.0.CO
  • [6] 2-U
  • [7] Solvent properties of the 1-butyl-3-methylimidazolium hexafluorophosphate ionic liquid
    Carda-Broch, S
    Berthod, A
    Armstrong, DW
    [J]. ANALYTICAL AND BIOANALYTICAL CHEMISTRY, 2003, 375 (02) : 191 - 199
  • [8] Recovery of actinides extracted by Truex solvent from high level waste using complexing agents I. Batch studies
    Chitnis, RR
    Wattal, PK
    Ramanujam, A
    Dhami, PS
    Gopalakrishnan, V
    Bauri, AK
    Banerji, A
    [J]. JOURNAL OF RADIOANALYTICAL AND NUCLEAR CHEMISTRY, 1999, 240 (03) : 721 - 726
  • [9] Influence of structural variation in room-temperature ionic liquids on the selectivity and efficiency of competitive alkali metal salt extraction by a crown ether
    Chun, S
    Dzyuba, SV
    Bartsch, RA
    [J]. ANALYTICAL CHEMISTRY, 2001, 73 (15) : 3737 - 3741
  • [10] Solvent extraction of strontium nitrate by a crown ether using room-temperature ionic liquids
    Dai, S
    Ju, YH
    Barnes, CE
    [J]. JOURNAL OF THE CHEMICAL SOCIETY-DALTON TRANSACTIONS, 1999, (08): : 1201 - 1202
1234