Department of Biotechnology and Chemistry, Faculty of Engineering, Kinki University
Department of Biotechnology and Chemistry, Faculty of Engineering, Kinki University
Department of Biotechnology and Chemistry, Faculty of Engineering, Kinki University
版
publisher
出版者 名前
近畿大学工学部
出版社 カナ
キンキ ダイガク コウガクブ
出版社 ローマ字
Kinki daigaku kogakubu
出版年(from)
2012
出版年(to)
12-20
日付 作成日
2013-02-14
雑誌名
近畿大学工学部研究報告
雑誌名(英)
Research reports of the Faculty of Engineering, Kinki University
巻
46
ページ
25 - 30
発行年
2012-12-01
ISSN
0386491X
抄録
[Abstract] Mechanochemical routes for synthesis of spinel(MgAl2O4) from low-crystalline magnesia, which was made by pyrolysis of basic magnesium carbonate, and transition aluminas,γ- and χ-alumina, were investigated. The mixture of low-crystalline magnesia and γ -alumina after milling 24 hours were calcined at temperatures from 600 to 1000 ℃. The calcination shows that spinel is synthesized above 700 ℃ with small amount of magnesia. Calcination of the mixture of low-crystalline magnesia and χ-alumina after milling 24 hours shows that spinel is synthesized above 700 ℃ without magnesia. More exothermic reactions to spinel were observed from differential thermal analysis curves by using χ-alumina as starting material than byusing γ-alumina. Spinel was formed by mechanochemical process at room temperature when low-crystalline magnesia and χ-alumina was used as starting materials, where gel of mica seems to work as reaction intermediate.
〈研究論文〉低結晶性酸化マグネシウムと遷移アルミナを原料としたメカノケミカル反応によるスピネルの合成
AN00063799-20121220-0025.pdf
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