Identification of radiolytic products of [C4mim][NTf2] and their effects on the Sr2+ extraction

Yinyong Ao; Jing Peng; Liyong Yuan; Zhenpeng Cui; Cheng Li; Jiuqiang Li; Maolin Zhai

doi:10.1039/C2DT32418K

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Dalton Transactions

Issue 12, 2013

The international journal for inorganic, organometallic and bioinorganic chemistry

Impact Factor 3.838 48 Issues per Year Indexed in MEDLINE

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Identification of radiolytic products of [C₄mim][NTf₂] and their effects on the Sr²⁺ extraction

Yinyong Ao,^a Jing Peng,^a Liyong Yuan,^b Zhenpeng Cui,^a Cheng Li,^c Jiuqiang Li^a and Maolin Zhai*^a

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Beijing National Laboratory for Molecular Sciences (BNLMS), Department of Applied Chemistry, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, China
E-mail: mlzhai@pku.edu.cn ;
Tel: +86-10-62753794

Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, China

Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201800, China

Dalton Trans., 2013,42, 4299-4305

DOI: 10.1039/C2DT32418K
Received 11 Oct 2012, Accepted 20 Dec 2012
First published online 20 Dec 2012

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Abstract
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The trace water-soluble radiolytic products of neat 1-butyl-3-methylimidazolium bis(trifluoromethylsulfonyl)imide ([C₄mim][NTf₂]) were identified by analysing water-washed samples of γ-ray irradiated ionic liquids. CF₃SO₂OH, CF₃SOOH, CF₃SO₂NH₂, HF and H₂SO₃ were confirmed as main radiolytic products of [C₄mim][NTf₂], and the total radiation chemical yields of the water-soluble radiolytic products (0.35 μmol J⁻¹) and that of hydrogen ions (0.46 ± 0.02 μmol J⁻¹) were determined by using ion chromatography and neutralization titration, respectively. It was found that the water-soluble radiolytic products of [C₄mim][NTf₂] greatly reduced the extraction efficiency of Sr²⁺ from water to irradiated [C₄mim][NTf₂], while the water-insoluble radiolytic products of [C₄mim][NTf₂] had a slight influence on the Sr²⁺ extraction.

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Yinyong Ao
Jing Peng
Liyong Yuan
Zhenpeng Cui
Cheng Li
Jiuqiang Li
Maolin Zhai

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Identification of radiolytic products of [C₄mim][NTf₂] and their effects on the Sr²⁺ extraction

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Identification of radiolytic products of [C4mim][NTf2] and their effects on the Sr2+ extraction

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Identification of radiolytic products of [C₄mim][NTf₂] and their effects on the Sr²⁺ extraction