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Citation: GUO Qingwei, LU Wenjuan, WANG Wei, LU Yanmin, ZHANG Yi, YANG Yanzhao. Extraction of Cerium(Ⅳ) by Ionic Liquid [C₁₀mim][NTf₂][J]. Chinese Journal of Applied Chemistry, ;2012, 29(7): 784-787. doi: 10.3724/SP.J.1095.2012.00364 shu

Extraction of Cerium(Ⅳ) by Ionic Liquid [C₁₀mim][NTf₂]

1.
School of Chemistry and Chemical Engineering, Key Laboratory for Special Functional Aggregated Materials of Education Ministry, Shandong University, Ji'nan 250100, China

Corresponding author: YANG Yanzhao,
Received Date: 22 August 2011
Available Online: 21 September 2011
Fund Project: 国家自然科学基金(20876089,21076115) (20876089,21076115)山东省自然科学基金(ZR2010BM019)资助项目 (ZR2010BM019)

The extraction behavior of Ce(Ⅳ) from HNO₃ medium by ionic liquid [C₁₀mim][NTf₂] was investigated.The effects of various parameters including time,feed concentration,HNO₃ concentration,alkyl chain length,salt concentration and temperature on the extraction efficiency of Ce(Ⅳ) was measured.Enthalpy value of the extraction was calculated,which indicated the extraction of Ce(Ⅳ) is a spontaneously exothermic process.A plausible anion exchange mechanism was proposed for this process.The backward extraction efficiency of the Ce(Ⅳ) was 85.1% using 1.0 mol/L H₂SO₄ as strippant.
- ionic liquids,
- [C_nmim][NTf₂],
- cerium,
- extraction
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Extraction of Cerium(Ⅳ) by Ionic Liquid [C₁₀mim][NTf₂]