並列タイトル等セリア オヨビ ソノ ゼンクタイ リュウシ ノ スイネツゴウセイ
Hydrothermal Synthesis of Ceria and Its Precursor Particles
タイトル(掲載誌)総合技術研究所研究報告=Bulletin of Research Institute for Industrial Technology.
一般注記Fine particles of ceria and its precursor were obtained from solutions of cerium salts in the presence of urea by heating under hydrothermal conditions at 120 to 180℃. The effects of the nature of the starting cerium (Ce(III) or Ce(IV)) salts, the concentration of urea, and hydrothermal treatment temperature on the composition, morphology, the crystal phase and crystallite size of synthesized particles were investigated. Ultra-fine CeO_2 particles were hydrothermally synthesized from 0.1mol・dm^<-3> cerium (IV) salts and their crystallite size was decreased from 20 to 10 nm with increasing urea concentration from 2 times to 8 times that of the. Ce^<4+> ion. On the other hand, two types of carbonate particles were formed from cerium (III) salts, and their crystal phase also significantly depended on the concentration of urea and treatment temperature. It changed gradually from orthorhombic to hexagonal with increasing urea concentration and treatment temperature.
identifier:http://repository.aitech.ac.jp/dspace/handle/11133/1574
連携機関・データベース国立情報学研究所 : 学術機関リポジトリデータベース(IRDB)(機関リポジトリ)