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[求助] 介孔二氧化硅的氮气吸附脱附曲线分析

有哪位大神可以帮忙分析下这个氮气吸附脱附图。我就是按照书上的分析来的,不知道自己对孔的类型和滞后类型分析的是不是对的。对您百忙之中帮忙看一下感到万分感激 !
The adsorption isotherm of MSNs exhibited a type IV isotherm;
the amount of N2 adsorption slowly increased at low pressure area and the pore filling from monolayer to multilayer formation is observed. At P/Po ≈ 1, it appeared hysteresis phenomenon, which assigned to H3 type.

介孔二氧化硅的氮气吸附脱附曲线分析
氮气吸附脱附.jpg
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等温线为什么是IV型呢?搞不懂~滞环出现的位置不应该说某点吧,应该写某段吧

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