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wym8716

新虫 (小有名气)

[求助] 氮气吸脱曲线的问题(是小球堆积形成还是小球上有孔) 已有1人参与

如图所示,测试样品为500nm的微球,通过SEM表征,球上似乎有孔,但是看不清楚,做了N2吸附,能否知道微球上是不是有孔?求解答

氮气吸脱曲线的问题(是小球堆积形成还是小球上有孔)
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wym8716

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Summary Report

Area

Single Point Surface Area at P/Po 0.25039634 :                       7.9438   m2/g

BET Surface Area:                                                    8.1834   m2/g

Langmuir Surface Area:                                              11.7038   m2/g

Volume

Single Point Adsorption Total Pore Volume of pores less than
         5169.2777 A Diameter at P/Po 0.99626350:                     0.021959 cm3/g

Pore Size

Adsorption Average Pore Diameter (4V/A by BET):                    107.3344   A   

BJH Adsorption Average Pore Diameter (4V/A):                       161.4213   A   

BJH Desorption Average Pore Diameter (4V/A):                       151.1117   A
2楼2014-05-20 19:05:25
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iSCIpapers

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大叔还年轻

【答案】应助回帖

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感谢参与,应助指数 +1
wym8716: 金币+5, ★有帮助 2014-05-22 18:09:22
Your sample is unlikely porous, from the N2 isotherm. The capillary condensation starting at P/P0= ~0.9 arises from the inter-particle porosity (between particles).
3楼2014-05-20 22:41:51
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wym8716

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引用回帖:
3楼: Originally posted by iSCIpapers at 2014-05-20 22:41:51
Your sample is unlikely porous, from the N2 isotherm. The capillary condensation starting at P/P0= ~0.9 arises from the inter-particle porosity (between particles).

吸脱附曲线并未完全重合 有轻微的滞留 是粒子造成的吗?或者有可能是孔造成的? 谢谢
4楼2014-05-22 18:09:14
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