INTERPRETATION OF ADSORPTION-ISOTHERMS AT ABOVE-CRITICAL TEMPERATURES USING A MODIFIED MICROPORE FILLING MODEL

SHETHNA, HK and BHATIA, SK (1994) INTERPRETATION OF ADSORPTION-ISOTHERMS AT ABOVE-CRITICAL TEMPERATURES USING A MODIFIED MICROPORE FILLING MODEL. Langmuir, 10 3: 870-876. doi:10.1021/la00015a043


Author SHETHNA, HK
BHATIA, SK
Title INTERPRETATION OF ADSORPTION-ISOTHERMS AT ABOVE-CRITICAL TEMPERATURES USING A MODIFIED MICROPORE FILLING MODEL
Journal name Langmuir   Check publisher's open access policy
ISSN 0743-7463
Publication date 1994-03-01
Year available 1994
Sub-type Article (original research)
DOI 10.1021/la00015a043
Open Access Status Not yet assessed
Volume 10
Issue 3
Start page 870
End page 876
Total pages 7
Place of publication WASHINGTON
Publisher AMER CHEMICAL SOC
Language eng
Abstract A new micropore filling model, which has a Henry's law region and predicts an upper limit to micropore size, is applied here to adsorption at supercritical temperatures. Data obtained here on the adsorption of methane and carbon dioxide on activated carbons are interpreted in terms of this model, while utilizing independently obtained pore size distributions. The results show that the contributions of micropore filling and mesopore surface adsorption can vary considerably with temperature as well as adsorbate, because of the dependency of the upper limit of micropore size in which filling occurs on these variables. In light of these findings it appears that concepts such as micropore volume and mesopore surface area are not reliable characteristics of the pore structure as they vary with process conditions.
Keyword Carbons
Equation
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status Unknown

Document type: Journal Article
Sub-type: Article (original research)
Collection: WoS Import - Archived
 
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