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Solvent extraction kinetics of Sm(III), Eu(III) and Gd(III) with 2-ethylhexyl phosphoric acid-2-ethylhexyl ester

Chen, Zhuo ; Wang, Yundong

Chinese Journal of Chemical Engineering, February 2018, Vol.26(2), pp.317-321 [Tạp chí có phản biện]

ISSN: 1004-9541 ; E-ISSN: 2210-321X ; DOI: 10.1016/j.cjche.2017.06.022

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  • Nhan đề:
    Solvent extraction kinetics of Sm(III), Eu(III) and Gd(III) with 2-ethylhexyl phosphoric acid-2-ethylhexyl ester
  • Tác giả: Chen, Zhuo ; Wang, Yundong
  • Chủ đề: Rare Earth Elements (Rees) ; Extraction ; Kinetics ; Model ; Rare Earth Elements (Rees) ; Extraction ; Kinetics ; Model ; Engineering
  • Là 1 phần của: Chinese Journal of Chemical Engineering, February 2018, Vol.26(2), pp.317-321
  • Mô tả: Solvent extraction kinetics of Sm (III), Eu (III) and Gd (III) from hydrochloric acid have been focused on using 2-ethylhexyl phosphoric acid-2-ethylhexyl ester (P507) with Anordning for Kontinuerlig Undersokning av Fordelningsfaktore vid Vatske Extraction (AKUFVE). Compared with the conventional set-up, some advantages emerge obviously, for example, fast phase separation, easy operation and convenience of kinetic data acquisition. First of all, the extraction mechanism was discussed based on the dimeric model of P507. Secondly, the effects of stirring speed were investigated and 420r·min−1 was determined of the following experiments. The effects of pH, concentration of rare earth elements (REEs) and P507 on the extraction rate were analyzed. The results indicated that the extraction mechanism changed with the increasing concentration of P507. Then, the experiments with different temperature were carried out. It turned out that the values of apparent activation energy (Ea) for...
  • Ngôn ngữ: English
  • Số nhận dạng: ISSN: 1004-9541 ; E-ISSN: 2210-321X ; DOI: 10.1016/j.cjche.2017.06.022

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