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dy322112(½ð±Ò+2):ллÈÈÐÄÓ¦Öú! 2010-12-31 21:09:22
You can use sol-gel method to prepare and the ncalcine at high temperature. Normally, around 650 degree for several hours and then you will get the spinel
4Â¥2010-08-13 17:37:41
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