Formation of linde F zeolite by KOH treatment of coal fly ash
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概要
- 論文の詳細を見る
Zeolitic products formed by hydrothermal treatment of coal fly ash (FA) with KOH aqueous solution under various reaction conditions were examined. Only linde F-type zeolite (K2Al2Si2O8·3H2O) was newly formed at atmospheric pressure, except formation of a small amount of kalsilite (KAlSiO4) at longer reaction time. The yield of the linde F zeolite was highest when reaction time, temperature, KOH concentration and (KOH solution / FA) ratio were 48 h, 95°C, 8 mol dm-3 and 25 ml g-1, respectively. In this case, the original FA spheres were almost completely dissolved out, and regular prisms of the linde F zeolite crystal with 0.5 to 1 μm in width and 1 to a few μm in length were formed. The specific surface area and cation exchange capacity of the FA-derived linde F zeolite were 20.2 m2 g-1 and 2.3 meq g-1, respectively.
- 公益社団法人 日本セラミックス協会の論文
- 2009-05-01
著者
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Murakami Takashi
Department Of Cardiology Okayama University School Of Medicine
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Miyaji Fumiaki
Japan Medical Materials Corp.
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MIYAJI Fumiaki
Department of Materials Science, Faculty of Science and Engineering, Shimane University
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SUYAMA Yoko
Department of Materials Science, Faculty of Science and Engineering, Shimane University
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Suyama Yoko
Dep. Of Materials Sci. Fac. Of Sci. And Engineering Shimane Univ.
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Suyama Yoko
Department Of Materials Science Faculty Of Science & Engineering Shimane University
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Miyaji Fumiaki
Department Of Material Chemistry Faculty Of Engineering Kyoto University
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Murakami Takashi
Department Of Materials Science Faculty Of Science And Engineering Shimane University
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Suyama Yoko
Department of Applied Chemistry, Faculty of Engineering, Kyushu University
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