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Evidence of Polymolecular Film Formation During the Adsorption of Water and Ethylene Dibromide on Glass Spheres
Author(s) -
Jurinak J. J.,
Waldron L. J.,
Vomocil J. A.
Publication year - 1962
Publication title -
soil science society of america journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.836
H-Index - 168
eISSN - 1435-0661
pISSN - 0361-5995
DOI - 10.2136/sssaj1962.03615995002600050009x
Subject(s) - adsorption , capillary condensation , condensation , ethylene , chemical engineering , alkali metal , phase (matter) , materials science , chemistry , thermodynamics , organic chemistry , physics , engineering , catalysis
The importance of adsorptive forces in monodispersed glass bead systems, at high relative pressures, was studied during the adsorption of water and ethylene dibromide by microscopic Pyrex and alkali glass beads, i.e., ideal soil. The analysis of the adsorption data by the Frenkel‐Halsey‐Hill isotherm equation, applicable at high surface coverages, allowed differentiation between capillary condensation and multilayer adsorption. Polymolecular adsorption accounted for all adsorption of water up to P/P 0 = 0.98 with no indication of condensation. The type of glass had a marked effect on the nature of water interaction. Evidence is presented which indicates that both ethylene dibromide and ethyl alcohol (data from literature) exhibit phase transitions in the multilayer region of adsorption.