Characterization of Calcium-doped Silica Gel Prepared in an Aqueous Solution
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- QUANG Dang Viet
- Department of Fine Chemical Engineering, Hanyang University Institute of Environmental Technology, Vietnam Academy of Science and Technology
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- PARK Jin-Koo
- E&B Nanotech. Co., Ltd.
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- KIM Jong-Kil
- E&B Nanotech. Co., Ltd.
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- ELINEEMA Gideon
- Department of Fine Chemical Engineering, Hanyang University
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- SHAO Godlisten N.
- Department of Fine Chemical Engineering, Hanyang University
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- LEE Jae Eun
- Department of Fine Chemical Engineering, Hanyang University
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- KIM Hee Taik
- Department of Fine Chemical Engineering, Hanyang University
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説明
In this study, calcium-doped silica was prepared by modifying sodium silicate-based silica gel in an aqueous solution of Ca(OH)2. Silica gels with less than 1 mm in size with different pH values were treated in Ca(OH)2 solution at concentrations ranging from 2 to 20 g/L and aged at 25, 60, and 90°C for 40 min. The BET surface area of the silica gel decreased while its pore size increased considerably after modification in Ca(OH)2 solution. The pH of 5% calcium-doped silica in water ranged from about 8.5 to 10, depending on the pH of silica gel, the aging temperature, and the concentration of the Ca(OH)2. When the concentration of the Ca(OH)2 solution was 20%, needle-like crystals of calcium silicate hydrate formed over the surface of silica gel.<br>
収録刊行物
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- 環境資源工学
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環境資源工学 59 (1), 33-41, 2012
一般社団法人 環境資源工学会
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詳細情報 詳細情報について
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- CRID
- 1390282680184822912
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- NII論文ID
- 130004448874
- 40019318227
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- NII書誌ID
- AA11907992
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- ISSN
- 13499262
- 13486012
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- NDL書誌ID
- 023765099
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- 本文言語コード
- en
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- データソース種別
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- JaLC
- NDLサーチ
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