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Chemical modeling of platinum group metal of extraction reactions from nitric acid solution based on ligand field analysis

Research Project

Project/Area Number 20K15210
Research Category

Grant-in-Aid for Early-Career Scientists

Allocation TypeMulti-year Fund
Review Section Basic Section 31010:Nuclear engineering-related
Research InstitutionOsaka University (2022-2023)
Japan Atomic Energy Agency (2020-2021)

Principal Investigator

Kaneko Masashi  大阪大学, 大学院理学研究科, 講師 (50781697)

Project Period (FY) 2020-04-01 – 2024-03-31
Project Status Completed (Fiscal Year 2023)
Budget Amount *help
¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000)
Fiscal Year 2022: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Fiscal Year 2021: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000)
Fiscal Year 2020: ¥2,860,000 (Direct Cost: ¥2,200,000、Indirect Cost: ¥660,000)
KeywordsDFT計算 / 白金族元素 / 溶媒抽出 / 計算化学 / 密度汎関数法 / 錯体化学 / 核分裂生成物 / 元素分離 / 配位結合 / 安定度定数 / メスバウアー分光法 / 配位子場解析
Outline of Research at the Start

高レベル放射性廃液の減容・資源化に向けて、核分裂生成物として含まれる白金族元素の錯体構造予測・溶媒抽出反応シミュレーションを行う。異なる錯体構造的特徴を有する白金族元素の幾何・電子構造計算に対するベンチマーク研究を行い、硝酸溶液中における安定な白金族元素の錯体種の予測する。最終的には、配位型/イオン対型抽出反応をモデル化し、白金族元素の溶媒抽出分離における分配挙動の予測を目指す。

Outline of Final Research Achievements

We conducted research with the aim of simulating the solvent extraction reaction of platinum-group elements based on the prediction of the coordination structures and the complexation reactions of platinum group elements contained as fission products in high-level radioactive liquid waste, First, we benchmarked the exchange and correlation functional functionals in the DFT method using the reported Mössbauer isomer shift values of the platinum group metal complexes, and then used the results to model the complexes of Ru, Rh, and Pd ions with nitrate ions, chloride ions, and ligands, and confirmed the validity of the model by comparing them with the experimental values. Furthermore, it was found that the typology of ion associative-/coordinative- type extraction of Pd ions can be predicted by DFT calculation. A new guideline for DFT modeling of solvent extraction of platinum group elements was provided.

Academic Significance and Societal Importance of the Research Achievements

高レベル放射性廃液からの白金族元素回収技術の開発は、ガラス固化工程の阻害要因の低減や、有価金属としての利用に繋がる。白金族元素の溶媒抽出分離を考える場合、白金族元素の水溶液中での配位構造の違いが安定性や反応性に起因するが、構造の多様性のため、系統的な議論は困難である。本研究では、計算化学手法を用いてRu, Rh, Pdの溶媒抽出反応における錯体モデリングを行う上で、メスバウアー分光パラメータを用いたDFTベンチマークや、硝酸中における溶存状態の系統的な研究を行い、さらには、Pdにおいて配位型/イオン会合型抽出反応の予測可能性を検討した。

Report

(5 results)
  • 2023 Annual Research Report   Final Research Report ( PDF )
  • 2022 Research-status Report
  • 2021 Research-status Report
  • 2020 Research-status Report
  • Research Products

    (23 results)

All 2023 2022 2021 2020

All Journal Article (16 results) (of which Int'l Joint Research: 1 results,  Peer Reviewed: 15 results,  Open Access: 1 results) Presentation (7 results) (of which Int'l Joint Research: 1 results,  Invited: 5 results)

  • [Journal Article] Extraction of Rh(III) from hydrochloric acid by protonated NTAamide(C6) and analogous compounds and understanding of extraction equilibria by using UV spectroscopy and DFT calculations2023

    • Author(s)
      Sasaki Yuji、Kaneko Masashi、Ban Yasutoshi、Kinoshita Ryoma、Matsumiya Masahiko、Shinoku Kota、Shiroishi Hidenobu
    • Journal Title

      Analytical Sciences

      Volume: 39 Issue: 9 Pages: 1575-1583

    • DOI

      10.1007/s44211-023-00376-8

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Ion-pairing extraction and their reaction modeling of anionic M-Cl species with cationic NTAamide(C6) extractant and comparison with density functional theory calculations2023

    • Author(s)
      Kinoshita Ryoma、Sasaki Yuji、Kaneko Masashi、Matsumiya Masahiko、Shinoku Kota、Shiroishi Hidenobu
    • Journal Title

      Hydrometallurgy

      Volume: 222 Pages: 106159-106159

    • DOI

      10.1016/j.hydromet.2023.106159

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Preliminary studies of XANES and DFT calculation of Ru extraction by imino-diacetamide and related compounds2023

    • Author(s)
      Sasaki Yuji、Nakase Masahiko、Kaneko Masashi、Kobayashi Tohru、Takeshita Kenji、Matsumiya Masahiko
    • Journal Title

      Analytical Sciences

      Volume: 40 Issue: 2 Pages: 335-339

    • DOI

      10.1007/s44211-023-00453-y

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Mutual separation of Am and Cm using ADAAM (alkyl DiAmide AMine) and reduction of volumes for liquid waste generated via batch-wise multistage extractions2023

    • Author(s)
      Sasaki Yuji、Kaneko Masashi、Ban Yasutoshi、Suzuki Hideya
    • Journal Title

      Journal of Nuclear Science and Technology

      Volume: online published Issue: 7 Pages: 1-11

    • DOI

      10.1080/00223131.2023.2283214

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Multi-stage extraction and separation of Ln and An using TODGA and DTBA or DTPA accompanying pH adjustment with lactic acid and ethylenediamine2022

    • Author(s)
      Sasaki Yuji、Kaneko Masashi、Ban Yasutoshi、Matsumiya Masahiko、Nakase Masahiko、Takeshita Kenji
    • Journal Title

      Separation Science and Technology

      Volume: 57 Issue: 16 Pages: 2543-2553

    • DOI

      10.1080/01496395.2022.2080707

    • Related Report
      2022 Research-status Report
    • Peer Reviewed
  • [Journal Article] Conformation, hydration, and ligand exchange process of ruthenium nitrosyl complexes in aqueous solution: Free‐energy calculations by a combination of molecular‐orbital theories and different solvent models2022

    • Author(s)
      Kido Kentaro、Kaneko Masashi
    • Journal Title

      Journal of Computational Chemistry

      Volume: 44 Issue: 4 Pages: 546-558

    • DOI

      10.1002/jcc.27021

    • Related Report
      2022 Research-status Report
    • Peer Reviewed
  • [Journal Article] Fully Chelating N<sub>3</sub>O<sub>2</sub>-Pentadentate Planar Ligands Designed for the Strongest and Selective Capture of Uranium from Seawater2022

    • Author(s)
      Mizumachi Takumi、Sato Minami、Kaneko Masashi、Takeyama Tomoyuki、Tsushima Satoru、Takao Koichiro
    • Journal Title

      Inorganic Chemistry

      Volume: 61 Issue: 16 Pages: 6175-6181

    • DOI

      10.1021/acs.inorgchem.2c00306

    • Related Report
      2022 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Mutual Separation of Ln and an Using TODGA and DTBA with High Organic Acid Concentrations2022

    • Author(s)
      Sasaki Yuji、Kaneko Masashi、Matsumiya Masahiko、Nakase Masahiko、Takeshita Kenji
    • Journal Title

      Solvent Extraction and Ion Exchange

      Volume: published online Issue: 6 Pages: 1-21

    • DOI

      10.1080/07366299.2021.2024650

    • Related Report
      2021 Research-status Report
    • Peer Reviewed
  • [Journal Article] Complex formation of light and heavy lanthanides with DGA and DOODA, and its application to mutual separation in DGA-DOODA extraction system2022

    • Author(s)
      Nomizu Daiki、Sasaki Yuji、Kaneko Masashi、Matsumiya Masahiko、Katsuta Shoichi
    • Journal Title

      Journal of Radioanalytical and Nuclear Chemistry

      Volume: 331 Issue: 3 Pages: 1483-1493

    • DOI

      10.1007/s10967-022-08204-5

    • Related Report
      2021 Research-status Report
    • Peer Reviewed
  • [Journal Article] Density functional study aiming to elucidate separation mechanisms of minor actinides and rare earths2022

    • Author(s)
      Kaneko Masashi
    • Journal Title

      Journal of the Atomic Energy Society of Japan

      Volume: 64 Issue: 1 Pages: 30-34

    • DOI

      10.3327/jaesjb.64.1_30

    • NAID

      130008140295

    • ISSN
      1882-2606, 2433-7285
    • Related Report
      2021 Research-status Report
  • [Journal Article] Density functional study on Am(III)/Eu(III) selectivity using crown ether type ligands2021

    • Author(s)
      Fukasawa Yuto、Kaneko Masashi、Nakashima Satoru
    • Journal Title

      Journal of Radioanalytical and Nuclear Chemistry

      Volume: 329 Issue: 1 Pages: 77-84

    • DOI

      10.1007/s10967-021-07685-0

    • Related Report
      2021 Research-status Report
    • Peer Reviewed
  • [Journal Article] Prediction of Stability Constants for Novel Chelates Design in Minor Actinides Partitioning over Lanthanides Using Density Functional Theory Calculation2021

    • Author(s)
      Kaneko Masashi、Sasaki Yuji、Wada Eriko、Nakase Masahiko、Takeshita Kenji
    • Journal Title

      Chemistry Letters

      Volume: 50 Issue: 10 Pages: 1765-1769

    • DOI

      10.1246/cl.210402

    • NAID

      130008101927

    • Related Report
      2021 Research-status Report
    • Peer Reviewed
  • [Journal Article] Density Functional Theory Study on the 193Ir Moessbauer Spectroscopic Parameters of Vaska’s Complexes and Their Oxidative Adducts2021

    • Author(s)
      Kaneko Masashi、Nakashima Satoru
    • Journal Title

      Inorganic Chemistry

      Volume: 60 Issue: 17 Pages: 12740-12752

    • DOI

      10.1021/acs.inorgchem.1c00239

    • Related Report
      2021 Research-status Report
    • Peer Reviewed
  • [Journal Article] Effect of Oxygen-Donor Charge on Adjacent Nitrogen-Donor Interactions in Eu3+ Complexes of Mixed N,O-Donor Ligands Demonstrated on a 10-Fold [Eu(TPAMEN)]3+ Chelate Complex2021

    • Author(s)
      Schnaars Kathleen、Kaneko Masashi、Fujisawa Kiyoshi
    • Journal Title

      Inorganic Chemistry

      Volume: 60 Issue: 4 Pages: 2477-2491

    • DOI

      10.1021/acs.inorgchem.0c03405

    • Related Report
      2020 Research-status Report
    • Peer Reviewed
  • [Journal Article] Complexation and bonding studies on [Ru(NO)(H2O)5]3+ with nitrate ions by using density functional theory calculation2020

    • Author(s)
      Kato Akane、Kaneko Masashi、Nakashima Satoru
    • Journal Title

      RSC Advances

      Volume: 10 Issue: 41 Pages: 24434-24443

    • DOI

      10.1039/d0ra05042c

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Density functional modeling of Am3+/Eu3+ selectivity with diethylenetriaminepentaacetic acid and its bisamide chelates.2020

    • Author(s)
      Kaneko Masashi、Sasaki Yuji、Matsumiya Masahiko、Nakase Masahiko、Takeshita Kenji
    • Journal Title

      Journal of Nuclear Science and Technology

      Volume: online published Issue: 5 Pages: 1-12

    • DOI

      10.1080/00223131.2020.1842267

    • Related Report
      2020 Research-status Report
    • Peer Reviewed
  • [Presentation] 密度汎関数法を用いた貴金属錯体のメスバウアーパラメータの解析2023

    • Author(s)
      金子 政志
    • Organizer
      第22回日本メスバウアー分光研究会シンポジウム
    • Related Report
      2023 Annual Research Report
  • [Presentation] メスバウアー分光パラメータと計算化学の活用による貴金属の抽出分離モデリング2023

    • Author(s)
      金子 政志
    • Organizer
      田中貴金属2023年度技術交流イベント
    • Related Report
      2023 Annual Research Report
    • Invited
  • [Presentation] 計算化学に基づく重元素の溶媒抽出シミュレーション2023

    • Author(s)
      金子 政志
    • Organizer
      2022重元素化学研究会
    • Related Report
      2022 Research-status Report
  • [Presentation] Selectivity of Minor Actinides over Lanthanides Based on Chemical Bonding by Means of Density Functional Theory Calculation2022

    • Author(s)
      Kaneko Masashi
    • Organizer
      The 9th ZC Colloquium in FY2022
    • Related Report
      2022 Research-status Report
    • Invited
  • [Presentation] Density Functional Theory Applications to Minor Actinide Separation2022

    • Author(s)
      Kaneko Masashi
    • Organizer
      International Conference on Nuclear Science, Technology, Application (ICONSTA) 2022
    • Related Report
      2022 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] 密度汎関数法に基づくアメリシウム分離メカニズム研究2021

    • Author(s)
      金子 政志
    • Organizer
      日本原子力学会第13回「将来原子力システムのための再処理技術」研究専門委員会
    • Related Report
      2021 Research-status Report
    • Invited
  • [Presentation] 密度汎関数計算を用いたAm(III)/Eu(III)選択性の解明2020

    • Author(s)
      金子政志
    • Organizer
      第39回溶媒抽出討論会
    • Related Report
      2020 Research-status Report
    • Invited

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Published: 2020-04-28   Modified: 2025-01-30  

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