Development of New Extractants for Platinum Group Metal Ions in Hydrochloric Acid Solutions
Development of New Extractants for Platinum Group Metal Ions in Hydrochloric Acid Solutions
复制标题
盐酸溶液中铂族金属离子新型萃取剂的研制
DOI:
10.1007/978-3-030-92662-5_16
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发表时间:
2022
期刊:
影响因子:
--
通讯作者:
Narita Hirokazu
中科院分区:
文献类型:
--
作者:
出口結美子;伊藤暁彦;Narita Hirokazu
Solvent extraction is widely used for the separation and purification of platinum group metal ions. This paper describes our development of two series of novel extractants for Pd(II)and Rh(III) chloridometalates. We have found that sulfide-diamide-type thiodiglycolamides (TDGAs) extract Pd(II) chloridometalates much faster than the conventional extractant di-n-hexyl sulfide (DHS). The TDGAs also show high stability against strongly acidic solutions, unlike DHS. The Pd(II) extracted with the TDGAs can be stripped by using aqueous ammonia. We have also found that amide-containing tertiary amines (ACTAs), especially the diamide-type ACTA (BisAA:N–n-hexyl-bis(N-methyl-N–n-octyl-ethylamide)amine) and the triamide-type ACTA (TrisAA: tris(N-methyl-N–n-octyl-ethylamide)amine), efficiently extract Rh (III) from 1–5 mol/L HCl solutions, even though a typically unextractable pentachlororhodate complex, [RhCl5(H2O)]2−, is dominantly present in these solutions. This high extraction efficiency is considered to be the result of the formation of unique outer-sphere coordination assemblies between the [RhCl5(H2O)]2−and protonated BisAA or TrisAA molecules. The loaded Rh (III) can be stripped with either a highly concentrated HCl solution or a NaOH aqueous solution.
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影响因子:
1.6
作者:
H. Narita;Motoki Maeda;C. Tokoro;Tomoya Suzuki;Mikiya Tanaka;R. Motokawa;H. Shiwaku;T. Yaita
通讯作者:
T. Yaita
DOI:
10.1201/9780203021460-17
发表时间:
2004
期刊:
--
影响因子:
--
作者:
M. Cox
通讯作者:
M. Cox
影响因子:
4.6
作者:
Narita, Hirokazu;Nicolson, Rebecca M.;Morrison, Carole A.
通讯作者:
Morrison, Carole A.
影响因子:
2
作者:
Narita, Hirokazu;Morisaku, Kazuko;Tanaka, Mikiya
通讯作者:
Tanaka, Mikiya