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小童2133

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this feature is not evident for the Co/SBA-15, but this is due to the fact that the desorption occurs at the critical pressure of liquid nitrogen. the observed decrease in surface area  is higher than what would be obtained by only taking  the mass increase upon cobalt loading into account, suggesting the presence of cobalt species inside the porous network in all cases.
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fjtony163

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sltmac(金币+1): 2011-10-06 08:29:27
小童2133(金币+3, 翻译EPI+1): 谢谢应助 2011-10-06 10:25:23
尽管Co/SBA-15的脱附特征不明显,但这是由于脱附作用需在液氮的临界压强下发生。由于表面区域观察到的质量减少比单一考虑钴上增加的质量要多, 所以间接表明在任何情况下在多孔网构下钴的存在。
2楼2011-10-06 00:33:21
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xiaokaizi

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sltmac(金币+1): 辛苦~ 2011-10-06 08:29:33
小童2133(金币+2): 谢谢应助 2011-10-06 10:25:29
由于解吸发生在液体氮的临界压力,所以对于Co/SBA-15这种特性并不明显。在表面观察到的衰减值高于原本只考虑大量增加钴载量的状况,这说明在所有的情况下多孔网中都有钴的存在。
3楼2011-10-06 00:52:45
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