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

2 被引用数 (Scopus)

抄録

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.

本文言語English
ホスト出版物のタイトルStudent Poster Session (General) - 226th ECS Meeting
編集者V. R. Subramanian, C. S. Johnson, R. H. Lara-Castro, K. B. Sundaram, V. Chaitanya, P. Pharkya
出版社Electrochemical Society Inc.
ページ91-97
ページ数7
45
ISBN(電子版)9781607685395
DOI
出版ステータスPublished - 2014
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

出版物シリーズ

名前ECS Transactions
番号45
64
ISSN(印刷版)1938-6737
ISSN(電子版)1938-5862

Other

OtherSymposium on Student Poster General Session - 2014 ECS and SMEQ Joint International Meeting
国/地域Mexico
CityCancun
Period14/10/514/10/9

ASJC Scopus subject areas

  • 工学(全般)

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