Evaluation of Adsorption Properties of Low Surface Area Carbons-Comparison of Experiments with a Theoretical Study

P. KLUSON; S.J. SCAIFE

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Evaluation of Adsorption Properties of Low Surface Area Carbons-Comparison of Experiments with a Theoretical Study

机译：低表面积碳吸附性能的评价与理论研究的比较

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Adsorption isotherms of nitrogen, argon and methane were experimentally measured at 77 K on low surface area graphitised carbons and natural graphite. For direct comparison, theoretical isotherms for the same gases were calculated on a model, flat surface by using NL DFT. Vulcan (a graphitised carbon black, often used as a surface area standard) was shown to represent a good approximation of a flat graphite surface. It is a suitable material for evaluation of potential parameters in modelling of adsorption in micropores. It was also confirmed that the non-local density functional theory provided a good and reliable fit to experimental adsorption isotherms. SEM microscopy and x-ray diffraction revealed surface properties consistent with those evaluated by adsorption.

机译：在低表面积石墨化碳和天然石墨上，以77 K的实验测量了氮，氩和甲烷的吸附等温线。为了直接比较，使用NL DFT在模型平坦的表面上计算了相同气体的理论等温线。 Vulcan（一种石墨化的炭黑，通常用作表面积标准品）显示出平坦石墨表面的良好近似。它是评估微孔吸附模型中潜在参数的合适材料。还证实了非局部密度泛函理论为实验吸附等温线提供了良好而可靠的拟合。 SEM显微镜和X射线衍射揭示了与通过吸附评估的那些一致的表面性质。

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来源
《Journal of porous materials》 |2002年第2期|p.115-129|共15页
作者
P. KLUSON; S.J. SCAIFE;
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作者单位

Faculty of Chemical Technology, Technicka 5, 766 28 Prague 6, Czech Republic;

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收录信息美国《科学引文索引》(SCI);美国《工程索引》(EI);
原文格式 PDF
正文语种 eng
中图分类基本无机化学工业;
关键词
adsorption of nitrogen; adsorption of argon; adsorption of methane; non-local density functional theory; graphite; graphitised carbons;

机译：氮的吸附氩气吸附甲烷吸附非局部密度泛函理论石墨;石墨化碳;

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Evaluation of Adsorption Properties of Low Surface Area Carbons-Comparison of Experiments with a Theoretical Study

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