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利用ASAP2020比表面积分析仪研究了阳泉煤在液氮浴(77K)条件下对N2吸附特性,根据该温度下的吸附等温线确定出ε-ω吸附特性曲线,同时根据Langmuir单分子层吸附模型和BET多分子层吸附模型得出了完全相同的ε-ω吸附特性曲线,表明ε-ω吸附特性曲线与煤对N2吸附的吸附模型无关。因此可以根据ε-ω吸附特性曲线确定不同温度下的吸附等温线。
The adsorption characteristics of N2 on Yangquan coal in N2 liquid nitrogen bath (77K) were studied by ASAP2020 surface area analyzer. According to the adsorption isotherm at this temperature, the ε-ω adsorption characteristic curve was determined. At the same time, according to Langmuir monolayer adsorption model and BET multimolecular layer adsorption model obtained exactly the same ε-ω adsorption characteristic curve, indicating that ε-ω adsorption characteristic curve and coal adsorption of N2 adsorption model has nothing to do. Therefore, the adsorption isotherm at different temperatures can be determined according to the ε-ω adsorption characteristic curve.