P. Hradil et al., Adsorption of vapours of some organic compounds on surface of iron-substituted layered vanadyl phosphate, COLL CZECH, 65(1), 2000, pp. 47-57
Citations number
24
Categorie Soggetti
Chemistry
Journal title
COLLECTION OF CZECHOSLOVAK CHEMICAL COMMUNICATIONS
Gas chromatographic measurement of specific retention volumes of vapours of
selected groups of organic compounds has been used to determine differenti
al molar enthalpy of adsorption of their molecules on the surface of layere
d vanadyl phosphate substituted with ferric ions having the composition of
[Fe(H2O)(0.20)(VO)(0.80)PO4. Various types of bonds of the molecules to the
surface of the layered adsorbent including their probable orientation with
respect to the layers have been discussed. It was observed a dependence of
the specific peak elution volume and shape of chromatographic peak on the
sample size in the cases of those compounds whose molecules are chemically
bound to the adsorbent surface. A connection is pointed out between the ads
orption strength of the organic molecules on the layered adsorbent and the
tendency of the system to undergo intercalation reaction.