Development of novel thiodiphenol-based extractants as a key material for separation of platinum group metals from automotive catalyst residues

2017 Fiscal Year Final Research Report

• Project/Area Number: 16K17941
• Research Category: Grant-in-Aid for Young Scientists (B)
• Allocation Type: Multi-year Fund
• Research Field: Green/Environmental chemistry
• Research Institution: Akita University
• Principal Investigator: Yamada Manabu 秋田大学, 理工学研究科, 講師 (90588477)
• Research Collaborator: SHIBAYAMA Atsushi 秋田大学, 大学院国際資源学研究科, 教授 (30323132)
• Project Period (FY): 2016-04-01 – 2018-03-31
• Keywords: 含硫黄ジフェノール / 金属認識 / 溶媒抽出 / 白金族分離精製 / リサイクル / 白金族抽出剤 / レアメタル

Outline of Final Research Achievements

Novel chelate-type thiocarbamoyl extractant and ionic exchange-type dialkylamino extractants based on thiodiphenol for separation of platinum group metals were synthesized. These extractants showed high selectivity towards palladium and platinum from a mixture of metals obtained from leach liquors of automotive catalysts. In particular, the thiocarbamoyl extractant efficiently separated palladium whereas the dialkylamino extractants separated palladium and platinum. Additionally, stripping and reusability of the extractants were also investigated. We established effective separation and recovery process of palladium and platinum from leach liquors of automotive catalysts using the extractants.

Free Research Field

超分子化学