Extraction of nickel and cobalt with 2-ethylhexyl-phosphonic acid mono-2-ethylhexyl ester.

• KOMASAWA ISAO

  Department of Chemical Engineering, Osaka University

• OTAKE TSUTAO

  Department of Chemical Engineering, Osaka University

• HATTORI ICHIZO

  Department of Chemical Engineering, Osaka University

抄録

Extraction equilibrium formulations were established for the distribution of nickel, cobalt and sodium between n-heptane and xylene containing 2-ethylhexylphosphonic acid mono-2-ethylhexyl ester ((LH)₂) and 5 × 10² mol/m³ (Na, H)NO₃. The composition of the organic phase species is NiL₂2(LH)₂, CoL₂(LH)₂ and NaL(3/2)(LH)₂, over a range of loading ratio, [M]₁/[(LH)₂]_feed, less than 0.08 for cobalt and 0.008 for nickel. The ratio of the extraction constant for the commonly used di-(2-ethylhexyl)phosphoric acid to that using the present reagent is of the order of 10 for cobalt, copper and sodium, but increases to the order of 100 for nickel.<br> With increase in loading ratio, successively larger aggregated species such as (NiL₂(LH)₂)_n(LH)₂ and (CoL₂)_n(LH)₂ (n=l, 2, 3, ...) appear. Identification of these species has been established on the assumption that the extraction constants are independent of the number of metal atoms, n, in the species.

収録刊行物

• JOURNAL OF CHEMICAL ENGINEERING OF JAPAN

  JOURNAL OF CHEMICAL ENGINEERING OF JAPAN 16 (3), 210-217, 1983

  公益社団法人 化学工学会

キーワード

• General Chemical Engineering
• General Chemistry

詳細情報

• CRID: 1390001204566854272
• NII論文ID: 130000789887
• DOI: 10.1252/jcej.16.210
• COI: 1:CAS:528:DyaL3sXksFOjsr8%3D
• ISSN: 18811299
• ISSN: 00219592
• ISSN: http://id.crossref.org/issn/00219592
• Web Site: http://www.jstage.jst.go.jp/article/jcej1968/16/3/16_3_210/_pdf
• 本文言語コード: en
• データソース種別:
  • JaLC
  • Crossref
  • CiNii Articles
• 抄録ライセンスフラグ: 使用不可