Preparation and microstructural studies on hydrothermally prepared hematite.
A 0.1 M FeCl3 aqueous solution was hydrothermally treated in a 1.5-dm3 stainless steel autoclave at varied temperatures (Th: 110-200 degrees C). Highly ordered cubic particles with uniform micropores 0.8 nm in diameter are produced at Th = 115 degrees C, although the cubic particles become less uniform with wide pore size distribution by raising the Th.
School of Chemistry, Osaka University of Education, Asahigaoka 4-698-1, Kashiwara, Osaka 582-8582, Japan. kandori@cc.osaka-kyoiku.ac.jp
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Ishikawa