Premium
A RAPID METHOD FOR DETERMINING THE SURFACE AREA OF ALUMINOSILICATES FROM THE ADSORPTION DYNAMICS OF ETHYLENE GLYCOL VAPOUR
Author(s) -
RAWSON R. A. G.
Publication year - 1969
Publication title -
journal of soil science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.244
H-Index - 111
eISSN - 1365-2389
pISSN - 0022-4588
DOI - 10.1111/j.1365-2389.1969.tb01581.x
Subject(s) - ethylene glycol , monolayer , adsorption , bentonite , chemistry , ethylene , chemical engineering , chromatography , organic chemistry , catalysis , biochemistry , engineering
Summary A new method is described for determining the surface area of soils and clays by adsorbing ethylene glycol vapour under continuous evacuation at c . 10 ‐2 cm of mercury. The adsorption of a monolayer of ethylene glycol is inferred from the dynamics of pressure changes in the adsorption chamber. The time at which monolayer adsorption is evaluated is proportional to the total weight of ethylene glycol required to form a monolayer on all samples in the adsorption chamber. This period ranged from 30 to 75 minutes when from 0·39 to 1·56 g of glycol was adsorbed in the experiments. A single 0·75 g sample of Wyoming bentonite required 0·195 & glycol.