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gfbbsss

铜虫 (初入文坛)

[求助] SEM N2吸附、脱附数据分析

做了吸附脱附等温线分析。请问等温线是否属于哪类等温吸附曲线?是否是介孔材料?从图中等温吸附线和粒径分布图能得到什么信息,数据合理么?孔容、孔径是多少? 烦请高手指教。
surface area
Single point surface area at P/Po = 0.200189621:   15.0387 m2g
BET Surface Area: 16.2217 m2g
Langmuir Surface Area: 22.9861 m2g
t-Plot External Surface Area: 18.1048 m2g
BJH Adsorption cumulative surface area of pores
between 1.7000 nm and 300.0000 nm diameter: 17.522 m2g
BJH Desorption cumulative surface area of pores
between 1.7000 nm and 300.0000 nm diameter: 19.5397 m2g

Pore Volume
Single point desorption total pore volume of pores
less than 103.1531 nm diameter at P/Po = 0.980864553: 0.089222 cm3/g
t-Plot micropore volume: -0.001239 cm3/g
BJH Adsorption cumulative volume of pores
between 1.7000 nm and 300.0000 nm diameter: 0.102926 cm3/g
BJH Desorption cumulative volume of pores between
1.7000 nm and 300.0000 nm diameter: 0.102143 cm3/g

Pore Size
Desorption average pore width (4V/A by BET): 22.00078 nm
BJH Adsorption average pore diameter (4V/A): 23.4963 nm
BJH Desorption average pore diameter (4V/A): 20.9098 nm
Horvath-Kawazoe
Maximum pore volume at P/Po = 0.012342314: 0.002945 cm?g
Median pore width: 0.9354 nm

等温吸附图
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何道平

铁杆木虫 (正式写手)

跟我今天做的一样,可以交流一下,
3楼2013-12-04 20:39:15
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gfbbsss

铜虫 (初入文坛)

谢谢智能机器人!之前看了很多相关资料,但是自己推断的不知道对不对。图形属于IV型,带有H1型滞后环,但毛细凝聚出现的压力较高,表明材料除了介孔还有大孔存在。
   对于孔径分布,就不大明白了!峰表示什么意思?希望有高手指教啊。谢谢!
2楼2012-07-18 21:41:09
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