Adsorption hysteresis, capillary condensation, and melting in multilayer methane films on graphite foam

Journal Article · Sun Mar 01 04:00:00 EST 1992 · Langmuir; (United States)

DOI:https://doi.org/10.1021/la00039a026· OSTI ID:5525647

Lysek, M J; LaMadrid, M; Day, P; Goodstein, D ^[1]

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1. California Inst. of Technology, Pasadena, CA (United States)

We have studied adsorption hysteresis in the system multilayer methane adsorbed on graphite foam by measuring heat capacities on each branch of the hysteresis curve. We are able to show that, on the stable branch, capillary condensation begins, surprisingly, at 1.1 layers. These observations call into question previous conclusions about this and other multilayer adsorbed systems. 27 refs., 3 figs.

• DOE Contract Number: FG03-85ER45192
• OSTI ID: 5525647
• Journal Information: Langmuir; (United States), Journal Name: Langmuir; (United States) Vol. 8:3; ISSN LANGD5; ISSN 0743-7463
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400201* -- Chemical & Physicochemical Properties
661300 -- Other Aspects of Physical Science-- (1992-)
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
ADSORPTION
ALKANES
CAPILLARY FLOW
CARBON
COLLOIDS
DISPERSIONS
ELEMENTAL MINERALS
ELEMENTS
FLUID FLOW
FOAMS
GRAPHITE
HYDROCARBONS
HYSTERESIS
MELTING
METHANE
MINERALS
NONMETALS
ORGANIC COMPOUNDS
PHASE TRANSFORMATIONS
PHYSICAL PROPERTIES
SORPTION
SPECIFIC HEAT
SURFACE PROPERTIES
THERMODYNAMIC PROPERTIES
VAPOR CONDENSATION