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The adsorption of water by active carbons, in relation to the enthalpy of immersion

โœ Scribed by H.F. Stoeckli; F. Kraehenbuehl; D. Morel

Publisher
Elsevier Science
Year
1983
Tongue
English
Weight
343 KB
Volume
21
Category
Article
ISSN
0008-6223

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โœฆ Synopsis

It is shown that there exists a simple relation between the enthalpy of immersion of pure active carbons into water, and the number of so-called primary adsorption sites a, derived from the water adsorption isotherm by using the new Dubinin-Serpinsky equation. The adsorption sites left on the surface after outgassing near 4OO"C, probably of the carbonyl type, contribute to the enthalpy of immersion by -25 kJ/mole, vs -0.6 kJ/mole for the bulk of the water filling the micropores at 307 K.

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