白金族金属分離のための新規抽出剤開発

DOI Web Site 被引用文献15件 参考文献78件
  • 成田 弘一
    (独)産業技術総合研究所　環境管理技術研究部門
  • 田中 幹也
    (独)産業技術総合研究所　環境管理技術研究部門

書誌事項

タイトル別名
  • Development of New Extractants for Platinum Group Metals
  • ハッキンゾク キンゾク ブンリ ノ タメ ノ シンキ チュウシュツザイ カイハツ

この論文をさがす

抄録

This review describes the knowledge required for the development of new extractants for the platinum group metals (PGMs), along with the properties of the conventional and new PGM extractants. Understanding the extraction mechanism of the PGMs is absolutely essential for accelerating the development of new extractants. The structural information of the PGM complexes both in an aqueous chloride solution and organic solvent is useful to clarify the extraction mechanism, where recognizing the difference between the inner and outer coordination spheres of the PGM ion is needed. During the PGM extraction from acidic chloride media, the extraction reaction can be divided into two broad categories: coordinative and ion-pair. The coordinative and ion-pair extractions mainly occur in the inner and outer coordination spheres, respectively. Moreover, there are various important factors governing the extraction behavior: the HSAB rule, chelate or size recognition effect, synergistic effect, interfacial activity, hydrophobicity of the extractants, etc. As for the conventional extractants, the extraction properties of palladium, platinum and rhodium with commercially available extractants are described. Among the recent studies of the PGM extraction, the size recognition effect in the outer coordination sphere is featured. Our recent work regarding the new extractants for palladium and rhodium is outlined. The thiodiglycolamide compounds can selectively extract Pd(II) much faster and have a higher oxidation resistance than the conventional extractant, di-n-hexyl sulfide; the tertiary amine compounds containing N,N-disubstituted amide groups can extract about 80% of rhodium at 1 to 2 mol/L hydrochloric acid. This value is the highest ever obtained in rhodium extraction from relatively highly concentrated hydrochloric acid.

収録刊行物

  • 資源と素材

    資源と素材 127 (4_5), 175-181, 2011

    一般社団法人 資源・素材学会

被引用文献 (15)*注記

もっと見る

参考文献 (78)*注記

もっと見る

キーワード

詳細情報 詳細情報について

問題の指摘

ページトップへ