Transport of Rhodium(III) from Chloride Media across a Polymer Inclusion Membrane Containing an Ionic Liquid Metal Ion Carrier
Transport of Rhodium(III) from Chloride Media across a Polymer Inclusion Membrane Containing an Ionic Liquid Metal Ion Carrier
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DOI：
10.1021/acsomega.0c00867
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发表时间：
2020-05
期刊：
影响因子：
4.1
通讯作者：
Takafumi Hanada;M. L. Firmansyah;Wataru Yoshida;Fukiko Kubota;S. Kolev;M. Goto
中科院分区：
文献类型：
--
作者：
Takafumi Hanada;M. L. Firmansyah;Wataru Yoshida;Fukiko Kubota;S. Kolev;M. Goto
以三辛基（十二烷基）氯化膦（P88812 Cl）为金属离子载体，研究了铑（III）从0.1 mol dm-3 HCl进料溶液（也含有铁（III））到0.1 mol dm-3 HCl和4.9 mol dm-3 NH 4Cl接收溶液的高效选择性跨聚合物包合膜（PIM）传输。用于Rh（III）传输的最佳PIM组合物为50wt%的聚（亚乙烯-共-六氟丙烯）（PVDF-HFP）、30wt%的P88812 Cl和20wt%的增塑剂2-硝基苯基辛基醚（2NPOE）。Rh（III）迁移的驱动力被认为是进料和接收溶液之间的氯离子浓度差。超过70%的铑（III）可以从接收溶液中回收，并没有观察到铁（III）的运输;然而，这两种金属离子不能通过液-液萃取分离。这是第一个报告的选择性运输铑（III）通过聚合物包合膜。
Efficient and selective transport of rhodium(III) across a polymer inclusion membrane (PIM) from a 0.1 mol dm–3 HCl feed solution, also containing iron(III), to a receiving solution containing 0.1 mol dm–3 HCl and 4.9 mol dm–3 NH4Cl was achieved using a phosphonium-type ionic liquid, trioctyl(dodecyl)phosphonium chloride (P88812Cl), as the metal ion carrier. The optimum PIM composition for the Rh(III) transport was 50 wt % poly(vinylidene-co-hexafluoropropylene) (PVDF-HFP), 30 wt % P88812Cl, and 20 wt % plasticizer 2-nitrophenyl octyl ether (2NPOE). The driving force for the Rh(III) transport was suggested to be the concentration difference of the chloride ion between the feed and the receiving solutions. More than 70% rhodium(III) could be recovered from the receiving solution, and no transport of iron(III) was observed; however, the two metal ions cannot be separated by liquid–liquid extraction. This is the first report of selective transport of rhodium(III) across a polymer inclusion membrane.