Development of new rhodium extraction systems by using synergistic effect and analyses of their separation mechanism

2016 Fiscal Year Final Research Report

• Project/Area Number: 26289283
• Research Category: Grant-in-Aid for Scientific Research (B)
• Allocation Type: Partial Multi-year Fund
• Section: 一般
• Research Field: Metal making/Resorce production engineering
• Research Institution: National Institute of Advanced Industrial Science and Technology
• Principal Investigator: Narita Hirokazu 国立研究開発法人産業技術総合研究所, 環境管理研究部門, 研究グループ長 (60357689)
• Co-Investigator(Kenkyū-buntansha): 元川 竜平 国立研究開発法人日本原子力研究開発機構, 量子ビーム応用研究センター, 研究副主幹 (50414579)
• Project Period (FY): 2014-04-01 – 2017-03-31
• Keywords: 溶媒抽出 / ロジウム / 協同効果 / 構造解析 / 抽出機構

Outline of Final Research Achievements

In order to develop effective extraction systems for rhodium in hydrochloric acid solution by using a synergistic effect, we investigated the extraction mechanism of rhodium in mixed solvent systems of sulfide-type and amine-type extractants. We analyzed the distribution behavior of rhodium between the organic extractant phase and hydrochloric acid solution, and the structure of the rhodium complexes extracted. As a result, the synergistic effect would stem from neutralization of a rhodium complex anion with the protonated amine-type extractants and substitution of the coordinated water of the rhodium by the sulfide-type extractant.

Free Research Field

溶媒抽出、溶液錯体科学