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Recovery of tungsten compounds from spent tungstophosphate catalyst using leaching, solvent extraction with phosphonium-based ionic liquids and precipitation
http://hdl.handle.net/10131/00015331
http://hdl.handle.net/10131/00015331a357d605-2b6e-4c1a-b037-a71375e83991
Item type | 学術雑誌論文 / Journal Article(1) | |||||
---|---|---|---|---|---|---|
公開日 | 2023-03-23 | |||||
タイトル | ||||||
タイトル | Recovery of tungsten compounds from spent tungstophosphate catalyst using leaching, solvent extraction with phosphonium-based ionic liquids and precipitation | |||||
言語 | ||||||
言語 | eng | |||||
キーワード | ||||||
主題 | Hydrometallurgy, Ionic liquids, Solvent extraction, Tungstophosphate, Tungsten | |||||
資源タイプ | ||||||
資源タイプ識別子 | http://purl.org/coar/resource_type/c_6501 | |||||
資源タイプ | journal article | |||||
アクセス権 | ||||||
アクセス権 | metadata only access | |||||
アクセス権URI | http://purl.org/coar/access_right/c_14cb | |||||
著者 |
Tatsuki, Igosawa
× Tatsuki, Igosawa× Masahiko, Matsumiya× Yuji, Sasaki |
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著者所属 | ||||||
Graduate School of Environment and Information Sciences, Yokohama National University | ||||||
著者所属 | ||||||
Graduate School of Environment and Information Sciences, Yokohama National University | ||||||
著者所属 | ||||||
Nuclear Science and Engineering Directorate, Japan Atomic Energy Agency | ||||||
抄録 | ||||||
内容記述タイプ | Abstract | |||||
内容記述 | A novel hydrometallurgical process involving leaching, precipitation, solvent extraction (SX) using phosphonium-based ionic liquids (ILs), and crystallization stripping was developed in this study. First, the spent catalyst was completely leached in distilled water at 343 K for 24 h. The leaching percentage of W(VI) was >99.9% according to ICP/SEM/EDX analysis. After leaching, the phosphate ions were separated by precipitation using Fe(NO3)3・9H2O as the precipitating agent. The separation percentage of phosphate was 90.8% at pH 8.11 according to ion-chromatography (IC) analysis. After the removal of phosphate, Alamine 336 and triethyl-n-pentyl phosphonium bis(trifluoromethylaulfonyl)amide ([P2225][NTf2]) were used as the extractant and diluent, respectively, for SX. The extraction percentage (E) of W(VI) reached 94.6% at pH 1.03, and the separation factor, W/P, was 101. The extraction mechanism of W(VI) was based on the ion association reaction related to the extracted complex, [(R3NH)nHxWyOz]IL, where x, y, z, and n are pH-dependent stoichiometric coefficients. After SX, the stripping percentage of W(VI) reached 100% at pH 8. Finally, crystallization proceeded at pH ≈ 4.5, and the obtained precipitate was identified to be ammonium paratungstate (NH4)10(H2W12O42)・4H2O by XRD analysis. A series of novel hydrometallurgical processes using ILs led us to conclude that W(VI) was efficiently recovered from the spent tungstophosphate catalyst. | |||||
書誌情報 |
Hydrometallurgy 巻 208, 発行日 2022-01-02 |
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ISSN | ||||||
収録物識別子タイプ | ISSN | |||||
収録物識別子 | 18791158 | |||||
書誌レコードID | ||||||
収録物識別子タイプ | NCID | |||||
収録物識別子 | AA00666679 | |||||
DOI | ||||||
関連タイプ | isIdenticalTo | |||||
識別子タイプ | DOI | |||||
関連識別子 | info:doi/10.1016/j.hydromet.2021.105803 | |||||
著者版フラグ | ||||||
出版タイプ | VoR | |||||
出版タイプResource | http://purl.org/coar/version/c_970fb48d4fbd8a85 | |||||
出版者 | ||||||
出版者 | Elsevier | |||||
関係URI | ||||||
識別子タイプ | URI | |||||
関連識別子 | https://www.sciencedirect.com/science/article/am/pii/S0304386X21002528 | |||||
関連名称 | 本文へのアクセスはこちら |