THE TWO-DIMENSIONAL VAN DER WAALS CONSTANTS OF MOLECULES ADSORBED ON CHARCOAL AND GRAPHITE

Journal Article · Tue Apr 01 00:00:00 EST 1958 · Transactions of the Faraday Society (England) Superseded by J. Chem. Soc., Faraday Trans., I and II

DOI:https://doi.org/10.1039/tf9585400540· OSTI ID:4347502

de Boer, J H; Kruyer, S

Entropy data indicate that physically adsorbed molecules of many gases on charcoal or on graphite are mobile and freely rotating. This picture is in accordance with other data and it induced us to apply a two-dimensional van der Waals equation to the adsorption data. It is then found that the adsorbed molecules repel each other. Explaining this repulsion by the repulsion of dipoles, induced in the adsorbed molecules by the surface, we obtain dipole moments which are in accordance with data, found by Mignolet in similar cases. The picture of induced dipoles leads to an appreciable contribution towards the heat of adsorption. (auth)

• Research Organization: Central Lab., Staatsmijnen in Limburg, Netherlands
• NSA Number: NSA-12-009094
• OSTI ID: 4347502
• Journal Information: Transactions of the Faraday Society (England) Superseded by J. Chem. Soc., Faraday Trans., I and II, Vol. Vol: 54; Other Information: Orig. Receipt Date: 31-DEC-58
• Country of Publication: Country unknown/Code not available
• Language: English

Related Subjects

CHEMISTRY
ADSORPTION
ADSORPTION HEAT
COAL
COLLISIONS
DIPOLE MOMENTS
DIPOLES
ELECTRIC FIELDS
ENTROPY
GASES
GRAPHITE
MOLECULES
ROTATION
SURFACES
THERMODYNAMICS
VAN DER WAALS FORCES