書誌事項
- タイトル別名
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- Preparation and Properties of SiO<sub>2</sub> from Rice Hulls
- モミガラ カラ ノ SiO2 セイゾウ オヨビ ソノ セイジョウ
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Dry rice hull contains 13-29wt% inorganic matter depending on the species, climate and geographic location. The inorganic matter is composed of silica (87-97wt%) with small amounts of alkali and other trace elements. Properties of ash obtained by combustion of between 400° and 1500°C were investigated. The SiO2 in the rice hull was localized in the outer and inner epidermis of rice hull. The SiO2 in rice hull ash formed by combustion below 800°C of rice hull powder with a particle size below 152μm was amorphous. Particles of the ash having an average diameter of 20μm were aggregates of small particles with a diameter of 2-5μm. At combustion temperatures above 900°C, the SiO2 in rice hull ash consisted of cristobalite and a small amount of tridymite. The surface of ash particles melted and the particles bonded to each other. The particle size was 40-60μm. It was found that potassium contained in the rice hull ash caused surface melting of SiO2 particles and accelerated the crystallization of amorphous SiO2 to cristobalite.
収録刊行物
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- Journal of the Ceramic Society of Japan (日本セラミックス協会学術論文誌)
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Journal of the Ceramic Society of Japan (日本セラミックス協会学術論文誌) 97 (1128), 842-849, 1989
公益社団法人 日本セラミックス協会
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詳細情報 詳細情報について
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- CRID
- 1390001205276926464
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- NII論文ID
- 110002290991
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- NII書誌ID
- AN10040326
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- ISSN
- 18821022
- 09145400
- http://id.crossref.org/issn/09145400
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- NDL書誌ID
- 3246483
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- データソース種別
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- JaLC
- NDL
- Crossref
- CiNii Articles
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- 抄録ライセンスフラグ
- 使用不可