美国麦克仪器公司研究人员发表最新2D-NLDFT研究进展

美国麦克仪器公司研究人员发表最新2D-NLDFT研究进展：结合N2等温吸附线和CO2等温吸附线表征微孔炭材料的孔结构。
美国麦克仪器公司的研究人员Jacek Jagiello博士，在CARBON上发表一篇题为Dual gas analysis of microporous carbons using 2D-NLDFT heterogeneous surface model and combined adsorption data of N2 and CO2（http://www.sciencedirect.com/science/article/pii/S0008622315004005）的研究文章，该文章使用我公司最新推出的2D-NLDFT的双等温线模型，对微孔炭材料的孔径分布进行了表征，得到了非常理想的结果，将炭材料的表征研究进一步向前推进。
该dual 2D-NLDFT已经嵌入到麦克气体吸附仪的最新软件MiroActive中。

该文章摘要如下：

Knowledge of the pore structure of carbon materials including micropores is crucial for applications such as double layer supercapacitors, gas separation, and other applications requiring high specific surface area materials. High surface area is always associated with fine micropores. The pore size distribution (PSD) of microporous carbons is usually evaluated from nitrogen adsorption isotherms measured at 77 K in the relative pressure range from 10?7 to 1. Due to the very slow gas diffusion into fine pores at cryogenic temperatures and low pressures, the adsorption measurements may be extremely time consuming and sometimes inaccurate when the adsorption equilibrium is difficult to achieve during the measurement. In this work, we discuss an approach in which the carbon PSD is calculated from the combined N2 and CO2 data measured in the pressure range from 1 to 760 Torr. Under such conditions, the diffusion into micropores is usually fast and equilibration times are short for both measurements. In the PSD calculations we use 2D-NLDFT models for carbons with heterogeneous surfaces (J. Jagiello and J.P. Olivier, Adsorption19, 2013, 777–783). We show that both isotherms can be fitted simultaneously with their corresponding models and as a result the unified PSD can be obtained