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caoyinglele

木虫 (小有名气)

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2楼: Originally posted by 破风竹 at 2013-10-10 03:43:41
图都画错了,呵呵。吸脱附曲线纵坐标单位标错了,孔径分布x轴应该也不对,看不太清楚。一般测试的数据会直接给出比表面积,孔体积等数据。根据吸脱附曲线,你的样品孔体积不大,0.1~0.2吧,这是这类材料的缺点,不过 ...

除了孔径分布图还有哪里能看出来是微孔还是介孔?我这个有可能是无孔的吗?你所说的低压端是指什么啊,是再测一下微孔吗?
知识就是力量
11楼2013-11-06 09:15:06
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破风竹

木虫 (小有名气)

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11楼: Originally posted by caoyinglele at 2013-11-06 09:15:06
除了孔径分布图还有哪里能看出来是微孔还是介孔?我这个有可能是无孔的吗?你所说的低压端是指什么啊,是再测一下微孔吗?...

你的样品里绝对有微孔,测试的时候,相对压力点取得再小点,比如0.0001,0.0005,0.001,0.005,0.01等这些点,到时候出来的图就漂亮了;另外你的数据点总体太少,可以多去点,不会太影响测试时间,一般孔体积影响测试时间,你的样品比表面积可以,孔体积很小,吸附想搞清楚要花点时间,我有两篇文章,写文章时可以参考一下画图和讨论(Synthesis of monolithic mesoporous silicon carbide from resorcinol-formadehyde/silica composites
;"Facile synthesis of resorcinol–formaldehyde/silica composite aerogels and their
transformation to monolithic carbon/silica and carbon/silicon carbide
composite aerogels"
;Synthesis and characterization of monolithic carbon/silicon carbide composite aerogels
)
如果这个测试方法用的多或者很重要,可以买本书看看,有个日本人写的关于吸附的还可以,网上应该能搜到
Theworldissofullofanumberofthings……
12楼2013-11-06 15:35:58
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