Adsorption of a liquid on a microporous adsorbent along the liquid-vapor equilibrium line. Communication 2. Average density of adsorbed substances in a microporous adsorbent

Journal Article · Wed Dec 10 04:00:00 EST 1986 · Bull. Acad. Sci. USSR, Div. Chem. Sci. (Engl. Transl.); (United States)

DOI:https://doi.org/10.1007/BF00956577· OSTI ID:6357820

Seliverstova, I I; Fomkin, A A; Serpinskii, V V

The average densities of adsorbates at p = p/sub s/ in the pores of zeolites and the temperature dependences of the adsorption values were determined for the previously studied argon, krypton, xenon-NaX zeolite, CO/sub 2/-NaX, and trifluorochloromethane-NaX systems and for the newly studied H/sub 2/O-NaA zeolite and ethanol-NaX zeolite systems. The values of the average densities and their temperature coefficients were compared with the values calculated with the Dubinin-Nikolaev and Basmadjian-Cook methods. It was shown that there are significant differences between the measured and calculated values. It was shown that the value of the average densities of the adsorbates and their thermal expansion coefficients differ significantly from the corresponding values for normal bulk liquid phases. It was found that for all nonpolar adsorbates, there is a temperature at which the densities of the adsorbate and the corresponding liquid are equal. This point, expressed in a reduced temperature scale (tau = T/T/sub Cr/), is equal to 0.88 +/- 0.04. The average density of water adsorbed by zeolite at all temperatures is greater than the density of liquid water.

• Research Organization: Institute of Physical Chemistry, Moscow, USSR
• OSTI ID: 6357820
• Journal Information: Bull. Acad. Sci. USSR, Div. Chem. Sci. (Engl. Transl.); (United States), Journal Name: Bull. Acad. Sci. USSR, Div. Chem. Sci. (Engl. Transl.); (United States) Vol. 35:6; ISSN BACCA
• Country of Publication: United States
• Language: Russian

Related Subjects

36 MATERIALS SCIENCE
360602 -- Other Materials-- Structure & Phase Studies
360603 -- Materials-- Properties
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400201* -- Chemical & Physicochemical Properties
ADSORBENTS
ADSORPTION
ALCOHOLS
ALKALI METAL COMPOUNDS
ARGON
CARBON COMPOUNDS
CARBON DIOXIDE
CARBON OXIDES
CHALCOGENIDES
CHLORINATED ALIPHATIC HYDROCARBONS
CRYSTAL STRUCTURE
DENSITY
ELEMENTS
EQUILIBRIUM
ETHANOL
EXPANSION
FLUIDS
FLUORINATED ALIPHATIC HYDROCARBONS
FREONS
GASES
HALOGENATED ALIPHATIC HYDROCARBONS
HYDROGEN COMPOUNDS
HYDROXY COMPOUNDS
INORGANIC ION EXCHANGERS
ION EXCHANGE MATERIALS
KRYPTON
LIQUIDS
MATERIALS
MICROSTRUCTURE
MINERALS
NONMETALS
ORGANIC CHLORINE COMPOUNDS
ORGANIC COMPOUNDS
ORGANIC FLUORINE COMPOUNDS
ORGANIC HALOGEN COMPOUNDS
OXIDES
OXYGEN COMPOUNDS
PHYSICAL PROPERTIES
POROSITY
RARE GASES
SODIUM COMPOUNDS
SODIUM OXIDES
SORPTION
SORPTIVE PROPERTIES
SURFACE PROPERTIES
TEMPERATURE DEPENDENCE
THERMAL EXPANSION
VAPORS
WATER
XENON
ZEOLITES