Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
7831756 | Acta Physico-Chimica Sinica | 2008 | 6 Pages |
Abstract
Isosteric heats and adsorption isotherms of methane on nanometer active carbon were measured at supercritical temperature (273-373 K) and pressure from 0 to 10 MPa. The measured data agreed well with Dubinin-Astakhov (DA) model at lower pressure but failed when pressure exceeded a special range. General Freundlich (GF) equation was used to modify the DA equation at high pressure and thus formed a combined bisection model GFDA. The adsorption mechanism of methane on nanometer active carbon was raised according to GFDA model and the heterogeneous energy distribution of the adsorbent was analyzed.
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Authors
Liang Guo, Zhansong Wu,