Abstract
The adsorption of carbon dioxide on carbon adsorbents (FT carbon, coconut charcoal, acid-washed bone char) and adsorbents containing basic calcium phosphate (hydroxylapatite, bone char, ash of bone char) was studied. Special consideration was given to the pretreatment of the materials. The carbons equilibrated as rapidly as the temperature; the basic calcium phosphates showed a rapid initial adsorption followed by a very slow rate which continued for days. Linear adsorption isotherms were found on FT carbon and the isosteric heats varied slightiy with coverage. The isotherms for the remaining materials had varying curvature and were for the most part in the same sequence as the estimated surface areas. The isosteric heats of carbon dioxide correlated very well with the magnitude of surface hydroxyl groups, an estimate of which was made from the chemical composition. There appeared to be three increasing levels of interaction: (1) pure physical adsorption; (2) an adsorption complex having 'bicarbonate structure'; and (3) an adsorption complex having 'carbonate structure'. (auth)
Citation Formats
Deitz, V R, Carpenter, F G, and Arnold, R G.
INTERACTION OF CARBON DIOXIDE WITH CARBON ADSORBENTS BELOW 400 C.
United States: N. p.,
1963.
Web.
Deitz, V R, Carpenter, F G, & Arnold, R G.
INTERACTION OF CARBON DIOXIDE WITH CARBON ADSORBENTS BELOW 400 C.
United States.
Deitz, V R, Carpenter, F G, and Arnold, R G.
1963.
"INTERACTION OF CARBON DIOXIDE WITH CARBON ADSORBENTS BELOW 400 C."
United States.
@misc{etde_4877736,
title = {INTERACTION OF CARBON DIOXIDE WITH CARBON ADSORBENTS BELOW 400 C}
author = {Deitz, V R, Carpenter, F G, and Arnold, R G}
abstractNote = {The adsorption of carbon dioxide on carbon adsorbents (FT carbon, coconut charcoal, acid-washed bone char) and adsorbents containing basic calcium phosphate (hydroxylapatite, bone char, ash of bone char) was studied. Special consideration was given to the pretreatment of the materials. The carbons equilibrated as rapidly as the temperature; the basic calcium phosphates showed a rapid initial adsorption followed by a very slow rate which continued for days. Linear adsorption isotherms were found on FT carbon and the isosteric heats varied slightiy with coverage. The isotherms for the remaining materials had varying curvature and were for the most part in the same sequence as the estimated surface areas. The isosteric heats of carbon dioxide correlated very well with the magnitude of surface hydroxyl groups, an estimate of which was made from the chemical composition. There appeared to be three increasing levels of interaction: (1) pure physical adsorption; (2) an adsorption complex having 'bicarbonate structure'; and (3) an adsorption complex having 'carbonate structure'. (auth)}
place = {United States}
year = {1963}
month = {Jun}
}
title = {INTERACTION OF CARBON DIOXIDE WITH CARBON ADSORBENTS BELOW 400 C}
author = {Deitz, V R, Carpenter, F G, and Arnold, R G}
abstractNote = {The adsorption of carbon dioxide on carbon adsorbents (FT carbon, coconut charcoal, acid-washed bone char) and adsorbents containing basic calcium phosphate (hydroxylapatite, bone char, ash of bone char) was studied. Special consideration was given to the pretreatment of the materials. The carbons equilibrated as rapidly as the temperature; the basic calcium phosphates showed a rapid initial adsorption followed by a very slow rate which continued for days. Linear adsorption isotherms were found on FT carbon and the isosteric heats varied slightiy with coverage. The isotherms for the remaining materials had varying curvature and were for the most part in the same sequence as the estimated surface areas. The isosteric heats of carbon dioxide correlated very well with the magnitude of surface hydroxyl groups, an estimate of which was made from the chemical composition. There appeared to be three increasing levels of interaction: (1) pure physical adsorption; (2) an adsorption complex having 'bicarbonate structure'; and (3) an adsorption complex having 'carbonate structure'. (auth)}
place = {United States}
year = {1963}
month = {Jun}
}