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- W2023831485 abstract "The mechanochemical synthesis of ultrafine hematite powders via solid-state reactions involving FeCl3 and CaO or Ca(OH)2, respectively, has been investigated. Mechanical milling of 2FeCl3 + 3CaO led to a nanocrystalline mixture of these two compounds. Fe2O3 formed only after heat treatment at 150 °C or above. A dilution of CaCl2 into the starting mixture caused a significant decrease in particle size, resulting in 10–30 nm mono-disperse particles of Fe2O3. Nanocrystalline akaganeite, FeOOH, together with calcium chloride was formed by milling 2FeCl3 + 3Ca(OH)2. Conversion of FeOOH to Fe2O3 by dehydration occurred during subsequent heat treatment. Ultrafine Fe2O3 particles of 20–50 nm were obtained after removal of the CaCl3 by-product phase." @default.
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- W2023831485 date "1997-09-01" @default.
- W2023831485 modified "2023-09-29" @default.
- W2023831485 title "Hematite powders synthesized by mechanochemical processing" @default.
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- W2023831485 doi "https://doi.org/10.1016/s0965-9773(97)00221-3" @default.
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