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Extraction Behavior of Palladium(II) with Chelate Ligands into Supercritical COィイD22ィエD2

Research Project

Project/Area Number 09440250
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Research Field 分離・精製・検出法
Research InstitutionIBARAKI UNIVERSITY

Principal Investigator

OHASHI Kousaburo  IBARAKI Univ. Fuc. of Science, Professor, 理学部, 教授 (60007763)

Co-Investigator(Kenkyū-buntansha) ORIYAMA Takeshi  IBARAKI Univ. Fuc. of Science, Asociate Professor, 理学部, 助教授 (90185687)
IMURA Hisanori  IBARAKI Univ. Fuc. of Science, Professor, 理学部, 教授 (60142923)
Project Period (FY) 1997 – 1999
Project Status Completed (Fiscal Year 1999)
Budget Amount *help
¥10,100,000 (Direct Cost: ¥10,100,000)
Fiscal Year 1999: ¥900,000 (Direct Cost: ¥900,000)
Fiscal Year 1998: ¥1,300,000 (Direct Cost: ¥1,300,000)
Fiscal Year 1997: ¥7,900,000 (Direct Cost: ¥7,900,000)
KeywordsSupercritical / Carbon dioxide / alkylated 2-methy-8-quinolinol / Palladium(II) / Extraction constant / Distribution constant / Gallium(III) / 長鎖2-メチル-8-キノリノール / 分配係数 / 溶解度 / 抽出装置 / pH決定 / Exthaction / Supercritical fluid / carbon dioxide / Gallium / 8-quinolinal
Research Abstract

The distribution behavior of HMOィイD26ィエD2Q between supercritical (SF) COィイD22ィエD2 and water and the extraction behavior of Ga(III) and Pd(II) with 2-methyl-8-quinolinol derivatives from an acidic solution into SF COィイD22ィエD2 were investigated. Furthermore, the pH of an acidic solution contacting with SF COィイD22ィエD2 was evaluated spectrophotometrically.
Below pH 3, the pH change of the aqueous solution contacting with SF COィイD22ィエD2 is negligibly small, but above pH 3, the pH of the aqueous phase was levelled to about 3.
The distribution constant (KィイD2DィエD2) of 2-methyl-5-hexyloxymethyl-8-quinolinol (HMOィイD26ィエD2Q) between SF COィイD22ィエD2 and water increased with an increase in the SF COィイD22ィエD2 pressure. The KィイD2DィエD2 value at 45゜C and 20.4 MPa was about one tenth of the KィイD2DィエD2 value for heptane - water system.
Ga(III) was extracted with HMOィイD26ィエD2Q into SFCOィイD22ィエD2 as Ga(OH)(MOィイD26ィエD2Q)ィイD22ィエD2. The extractability increases with an increment of the SF COィイD22ィエD2 pressure. Ga(III) was completely separated from Al(II) with HMOィイD26ィエD2Q at 45゜C and 10 MPa.
The extractability of Pd(II) with HMQ from a weakly acidic solution into SF COィイD22ィエD2 was remarkably affected by the ClィイD1-ィエD1 and HィイD1+ィエD1 concentrations. Pd(II) should be extracted with HMQ as Pd(MQ)ィイD22ィエD2 from a weakly acidic solution. On the other hand, the Pd(II) complex extracted from the higher HCl concentration was HィイD22ィエD2PdClィイD24ィエD2.
The proposed method can be potential technique for the selective separation of metals such as Pd(II).

Report

(4 results)
  • 1999 Annual Research Report   Final Research Report Summary
  • 1998 Annual Research Report
  • 1997 Annual Research Report
  • Research Products

    (12 results)

All Other

All Publications (12 results)

  • [Publications] Kousaburo OHASHI: "Distribution Behavior of 2-Methyl-5-hexyloxymethyl-8-quindionol between Supercritical CO_2 and water"Chem.Lett.,. 32-33 (2000)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] Kousaburo OHASHI: "Extraction Behavior of Gallium(III) with 2-Methyl-5-hexyloxymethyl-8-quindionol and 5-"Chem.Lett.,. 1135-1136 (1997)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] Kousaburo OHASHI: "Newly Developed Decontamination Technology Based on Gaseous Reactions Converting to Carbonyl and Fluoric Compounds"Nucl.Tec.,. 124. 147-164 (1998)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] Kousaburo OHASHI: "Large Synergism of 3,5-Dichlorophenol in the Eαthaction of Gallium (III) with 2-Methyl-8-quinolinol Derivatives"Anal.Sci.,. 16. 169-176 (2000)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] K. Ohashi, N. Ishikawa, Sung-Yong Choi, H. Imura, T. Oriyama: "Distribution Behavior of 2-Methyl-5-hexyloxymethyl-8-quinolinol between Supercritical COィイD22ィエD2 and Water."Chem. Lett.. 32-33 (2000)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] K. Tatenuma, Y. Hishinuma, S. Tomatsuri, K. Ohashi, Y. Usui: "Newly Developed Decontamination Technology Based on Gaseous Reactions Converting to Carbonyl and Fluoric Compounds."Nucl. Tec.. 124. 147-164 (1998)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] Sung-Yong Choi, K. Ohashi: "Anomalously Large Synergism of 3, 5-Dichlorophenol in the Extraction of Gallium(III) with 2-Methyl 8-quinolinol Derivatives."Anal. Sci.. 16. 169-176 (2000)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] K. Ohashi, K. Tatenuma: "Extraction Behavior of Gallium(III) with 2-Methyl-5-hexyloxymrthyl-8-quinolinol and 5-hexyloxymethyl-8-quinolinol from Weakly Acidic Solution into Supercritical COィイD22ィエD2 and Selective Separation of Gallium(III) from Aluminum(III)."Chem. Lett.. 1135-1136 (1997)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] KOUSABURO OHASHI: "Distribution Behavior of 2-methyl-5-hexyloxymethy-8-quinainol between Supercritical CO_2 and water"Chem.Lett.,. 32-33 (2000)

    • Related Report
      1999 Annual Research Report
  • [Publications] KOUSABURO OHASHI: "Newly Developed Decontamination Technology Based on Gaseous Reactions Conserting to Canhinyl and Fluaric Compounds" Nuclear Technology. 124. 147-164 (1998)

    • Related Report
      1998 Annual Research Report
  • [Publications] 大橋弘三郎: "Extraction behavion of Gallium (III) with 2-methyl-5-hexyloxymethyl-8-quinolinol and 5-hexyloxymethyl-8-quinolinol from weakly Acidic Solution into Supercritical CO_2 and selective separation of Gallium (III) from (Aluminum (III)" Chem.Lett.1135-1136 (1997)

    • Related Report
      1997 Annual Research Report
  • [Publications] 大橋弘三郎: "5-(4-ニトロフェニルアゾ)-7-(4-エチル-1-メチル-オクチル)-8-キノリノールによる亜鉛(II)の自己付加錯体抽出とその溶媒効果" 分析化学. 47. 101-107 (1998)

    • Related Report
      1997 Annual Research Report

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Published: 1997-04-01   Modified: 2016-04-21  

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