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From Fig. 4 it seems that there was a structural change during the calcination from 400C to 600C and 800C. The volume adsorbed is increased when calcined from 400 to 600 C and decreased after 600 to 800 C. Some discussions should be given.

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Originally posted by zyhou at 2010-09-20 13:06:14:
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Originally posted by hf3688 at 2010-09-20 13:32:49:


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hf3688(½ð±Ò+2):лл£¡ 2010-09-20 19:39:46
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Originally posted by hf3688 at 2010-09-20 13:32:49:


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