Elimination of boron from soluble silica via solvent extraction with 2,2,4-trimethyl-1,3-pentanediol using a multistage flow-type reactor

Nobufumi Matsuo, Takafumi Ishihara, Takahiro Oyanagi, Kazuki Nakajima, Masahiro Kunimoto, Yasuhiro Fukunaka, Takayuki Homma

    研究成果: Conference contribution

    1 引用 (Scopus)

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    Elimination of boron species via solvent extraction with 2,2,4-trimethyl-1,3-pentandiaol was engaged in a flow-type device into which the aqueous solution dissolving diatomaceous earth, a -candidate of the resource for high-purity silicon material. The flow-type device has a 2-stage channel with 1.0 mm width, 0.10 mm depth, and 25 mm length each, and the specific interfacial area is comparable to a typical microchannel device. Residual boron content in the aqueous solution decreased to less than 0.1 ppm after the solvent extraction under the restriction of short contact duration shorter than 100 ms. In addition, the analysis with density functional theory indicated that the number of neighbor carbon on the central carbon is one of the keys for improvement of reactivity of extractant. Hence, it is suggested that the flow-type microchannel device with solvent extraction with alkyldiol extractant can be utilized as an attractive approach toward the production of high-purity silica as a source for solar-grade silicon.

    元の言語English
    ホスト出版物のタイトルECS Transactions
    出版者Electrochemical Society Inc.
    ページ91-97
    ページ数7
    64
    エディション45
    ISBN(印刷物)9781607685395
    DOI
    出版物ステータスPublished - 2015
    イベントSymposium on Student Poster General Session - 2014 ECS and SMEQ Joint International Meeting - Cancun, Mexico
    継続期間: 2014 10 52014 10 9

    Other

    OtherSymposium on Student Poster General Session - 2014 ECS and SMEQ Joint International Meeting
    Mexico
    Cancun
    期間14/10/514/10/9

    ASJC Scopus subject areas

    • Engineering(all)

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    Matsuo, N., Ishihara, T., Oyanagi, T., Nakajima, K., Kunimoto, M., Fukunaka, Y., & Homma, T. (2015). Elimination of boron from soluble silica via solvent extraction with 2,2,4-trimethyl-1,3-pentanediol using a multistage flow-type reactor. : ECS Transactions (45 版, 巻 64, pp. 91-97). Electrochemical Society Inc.. https://doi.org/10.1149/06445.0091ecst