Development of selective precipitants for rhodium via formation of unique ion-pairs using anilinium cations
Project/Area Number |
17K12835
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Research Category |
Grant-in-Aid for Young Scientists (B)
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Allocation Type | Multi-year Fund |
Research Field |
Environmental conscious materials and recycle
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Research Institution | Akita University |
Principal Investigator |
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Project Period (FY) |
2017-04-01 – 2019-03-31
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Project Status |
Completed (Fiscal Year 2018)
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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)
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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.
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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。
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Report
(3 results)
Research Products
(7 results)