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Development of selective precipitants for rhodium via formation of unique ion-pairs using anilinium cations

Research Project

Project/Area Number 17K12835
Research Category

Grant-in-Aid for Young Scientists (B)

Allocation TypeMulti-year Fund
Research Field Environmental conscious materials and recycle
Research InstitutionAkita University

Principal Investigator

Matsumoto Kazuya  秋田大学, 理工学研究科, 講師 (70467025)

Project Period (FY) 2017-04-01 – 2019-03-31
Project Status Completed (Fiscal Year 2018)
Budget Amount *help
¥4,420,000 (Direct Cost: ¥3,400,000、Indirect Cost: ¥1,020,000)
Fiscal Year 2018: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Fiscal Year 2017: ¥2,730,000 (Direct Cost: ¥2,100,000、Indirect Cost: ¥630,000)
Keywordsロジウム / イオン対 / アニリン / 沈殿回収 / 白金族金属 / 芳香族第一級アミン / 選択回収 / ロジウム回収 / アニリニウムイオン
Outline of Final Research Achievements

Preferential and selective recovery of rhodium by precipitation was studied using aromatic primary amines as precipitants. Selective precipitation of rhodium from HCl solutions containing palladium, platinum, and rhodium was achieved using 4-alkylanilines. The structural analysis revealed that the rhodium-containing precipitates are unique ion-pair complexes composed of anilinium cations and rhodium chloro-complex anions. High stability of the unique ion-pairs in HCl plays a key role in the selective precipitation of rhodium.

Academic Significance and Societal Importance of the Research Achievements

ロジウムは極めて希少かつ高価であるが,自動車排ガス浄化触媒に用いられるなど産業上極めて重要な金属である。これまで有効な回収方法がないことが大きな課題であったが,本研究により,選択的な回収方法を開発することに成功した。この成果はロジウムの価格低下や安定供給につながることが期待され,社会的意義は大きい。また,本研究により明らかとなった特異なイオン対形成は,他の白金族金属の回収にも応用できる可能性があり,学術的な価値も高い。

Report

(3 results)
  • 2018 Annual Research Report   Final Research Report ( PDF )
  • 2017 Research-status Report
  • Research Products

    (7 results)

All 2019 2018 2017

All Journal Article (1 results) (of which Peer Reviewed: 1 results,  Open Access: 1 results) Presentation (5 results) Patent(Industrial Property Rights) (1 results)

  • [Journal Article] Preferential Precipitation and Selective Separation of Rh(III) from Pd(II) and Pt(IV) Using 4-Alkylanilines as Precipitants2019

    • Author(s)
      Matsumoto Kazuya、Yamakawa Sumito、Sezaki Yuto、Katagiri Hiroshi、Jikei Mitsutoshi
    • Journal Title

      ACS Omega

      Volume: 4 Issue: 1 Pages: 1868-1873

    • DOI

      10.1021/acsomega.8b03435

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed / Open Access
  • [Presentation] Solvent extraction of rhodium (III) from hydrochloric acid solutions using alkylanilines as extractants2018

    • Author(s)
      瀬崎勇斗、松本和也、寺境光俊
    • Organizer
      平成30年度化学系学協会東北大会
    • Related Report
      2018 Annual Research Report
  • [Presentation] 芳香族第一級アミンを抽出剤としたロジウム選択抽出2018

    • Author(s)
      松本和也、瀬崎勇斗、寺境光俊
    • Organizer
      第37回溶媒抽出討論会
    • Related Report
      2018 Annual Research Report
  • [Presentation] アルキルアニリンを沈殿剤としたロジウム選択回収2018

    • Author(s)
      松本和也,山川澄人,瀬崎勇斗,寺境光俊
    • Organizer
      日本化学会第98春季年会
    • Related Report
      2017 Research-status Report
  • [Presentation] Mutual Separation of Pt(IV), Pd(II), and Rh(III) Using Aliphatic Primary Amines as Precipitants2017

    • Author(s)
      山川澄人,松本和也,寺境光俊
    • Organizer
      平成29年度化学系学協会東北大会
    • Related Report
      2017 Research-status Report
  • [Presentation] Highly Selective Precipitation of Platinum(IV) Using 2-Ethylhexylamine2017

    • Author(s)
      瀬崎勇斗,山川澄人,松本和也,寺境光俊
    • Organizer
      平成29年度化学系学協会東北大会
    • Related Report
      2017 Research-status Report
  • [Patent(Industrial Property Rights)] ロジウム回収方法2018

    • Inventor(s)
      松本和也,寺境光俊,片桐洋史,山川澄人,瀬崎勇斗
    • Industrial Property Rights Holder
      秋田大学
    • Industrial Property Rights Type
      特許
    • Industrial Property Number
      2018-051635
    • Filing Date
      2018
    • Related Report
      2017 Research-status Report

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Published: 2017-04-28   Modified: 2020-03-30  

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