Spectroscopic study on the anion exchange behavior of Cu chloro-complexes in HCl Solutions and its implication to Cu isotopic fractionation

DOI Web Site Web Site 被引用文献3件 参考文献29件
  • TANIMIZU MASAHARU
    Department of Earth and Planetary Systems Science, Graduate School of Science, Hiroshima University
  • TAKAHASHI YOSHIO
    Department of Earth and Planetary Systems Science, Graduate School of Science, Hiroshima University
  • NOMURA MASAHARU
    Photon Factory, Institute of Materials Structure Science, High Energy Accelerator Research Organization

この論文をさがす

抄録

The mode of coordination about Cu(II) adsorbed on a strongly basic anion exchange resin equilibrated in HCl aqueous solutions was determined using extended X-ray absorption fine structure (EXAFS) and Raman spectroscopies. EXAFS spectra of the adsorbed Cu chloro-complexes were constant over a wide range of HCl concentrations in contrast to stepwise Cu-Cl complexation in the solutions. The adsorbed anion species was estimated to be [CuCl4]2-. Its Raman spectra suggested the most plausible coordination structure of [CuCl4]2- was 4 Cl coordination without H2O ligands. The change from sixfold coordination [Cu(H2O)6]2+ to fourfold coordination [CuCl4]2- in stepwise chloro-complexation in the aqueous phase and preferential adsorption of [CuCl4]2- to the resin through ion-exchange reactions in elevated HCl concentrations will result in larger mass fractionation of Cu compared to Zn, which has a tendency to form tetrahedral Zn chloro-complexes in the presence of chloride ions.

収録刊行物

被引用文献 (3)*注記

もっと見る

参考文献 (29)*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