✦ LIBER ✦

Thermodynamic study of high-pressure adsorption of methane on activated carbons: The effect of oxidation on pore structure and adsorption energy heterogeneity

✍ Scribed by Jacek Jagiełło; Prashant Sanghani; Teresa J. Bandosz; James A. Schwarz

Publisher: Elsevier Science
Year: 1992
Tongue: English
Weight: 732 KB
Volume: 30
Category: Article
ISSN: 0008-6223
DOI: 10.1016/0008-6223(92)90050-7

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✦ Synopsis

The effects of oxidation of activated carbons are studied by means of high-pressure methane adsorption. Decreases in amounts adsorbed and adsorption enthalpies after oxidation are observed. Thermodynamic analysis of adsorption isotherms using the virial-type thermal equation of adsorption is presented. The calculated adsorption energy distributions are shifted to lower adsorption energies for oxidized carbons. The mean adsorption energies decrease, indicating that oxidized carbon surfaces have lower affinity for methane adsorption.

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