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The Gas‐Solid Interface Heats of Adsorption of Simple Molecules on Microporous Carbons and on Graphitized Carbon Blacks, at Low Surface Coverage
Author(s) -
Stoeckli Fritz
Publication year - 1974
Publication title -
helvetica chimica acta
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.74
H-Index - 82
eISSN - 1522-2675
pISSN - 0018-019X
DOI - 10.1002/hlca.19740570733
Subject(s) - chemistry , microporous material , adsorption , benzene , cyclohexane , carbon fibers , pentane , limiting , xenon , nitrogen , argon , molecule , chemical engineering , organic chemistry , composite material , materials science , composite number , engineering , mechanical engineering
The heats of adsorption of nitrogen, argon, xenon, pentane, cyclohexane and benzene on a typical microporous carbon have been measured by gas‐solid chromatography. An overall comparison of the limiting heats of adsorption on active carbons and on graphitized carbon blacks shows a ratio of 1.6 between them. This is also the value of the ratio of the minima of the adsorption potentials. This result is discussed in terms of simple models for the shape of the micropores. Slot‐like pores give a better agreement.