scholarly journals Physical adsorption of CO2 on graphite: monolayer and multilayer regions

1985 ◽  
Vol 2 (4) ◽  
pp. 253-262 ◽  
Author(s):  
E. J. Bottani ◽  
L. E. Cascarini De Torre
Keyword(s):  
Carbon Black ◽  
Physical Adsorption ◽  
Graphitized Carbon Black ◽  
Distribution Functions ◽  
Experimental Adsorption ◽  
Graphitized Carbon ◽  
Adsorption Energy Distribution ◽  
Adsorption Energy Distribution Functions ◽  
Adsorption Of Co2 ◽  
Energy Distribution Functions

Different models which describe CO2 physisorption on a graphitized carbon black are analysed in the range 194·7 to 273·2 K. They are related to the thermodynamic functions and to adsorption energy distribution functions, which are obtained starting from experimental adsorption isotherms. This calculation, previously presented, is based on an extension of the Ross and Olivier method.

The Study of Adsorption of Iodine on Carbon Black by Inverse Liquid Chromatography

2007 ◽  
Vol 80 (5) ◽  
pp. 895-906 ◽  
Author(s):  
D. Maafa ◽  
H. Balard ◽  
J. B. Donnet
Keyword(s):  
Carbon Black ◽  
Adsorbed Molecule ◽  
Distribution Functions ◽  
Irreversible Adsorption ◽  
Henry's Constants ◽  
Adsorption Energy Distribution ◽  
Desorption Isotherms ◽  
Adsorption Energy Distribution Functions ◽  
Energy Distribution Functions ◽  
Liquid Chromatographic

Abstract The study of iodine adsorption on carbon black samples was made using inverse liquid chromatographic frontal analysis (ILC). Unlike HPLC supports, the efficiency of the chromatographic column filled with a carbon black designed for rubber applications is low. Then the front boundaries of a non-adsorbed molecule, like heavy water (D2O) or acetone, was taken as reference for the calculation of the desorption isotherms. The monolayer capacity of adsorption, Langmuir's and Henry's constants were determined from the desorption isotherms. It was observed that 40% of the surface of the studied carbon black corresponds to a phenomenon of irreversible adsorption of the probe, and that the ILC also highlighted the heterogeneity of the studied carbon black. The adsorption energy distribution functions of iodine obtained by this method are similar to those which were already determined by IGC-FC with the heptane -like probe. The differences in behaviors between two families of carbon black could be attributed to the surface roughness.

Physical adsorption of gases on graphitized carbon black

1978 ◽  
Vol 33 (12) ◽  
pp. 1659-1665 ◽  
Author(s):  
Eduardo D. Glandt ◽  
Alan L. Myers ◽  
Donald D. Fitts
Keyword(s):  
Carbon Black ◽  
Physical Adsorption ◽  
Graphitized Carbon Black ◽  
Graphitized Carbon ◽  
Adsorption Of Gases

Equilibrium, Kinetic and Thermodynamic Studies for the Adsorption of Gemfibrozil onto Graphitized Carbon Black (GCB)

NANO ◽  
2020 ◽  
Vol 15 (09) ◽  
pp. 2050120
Author(s):  
Shicheng Liu ◽  
Guanjing Qi ◽  
Cong Ding ◽  
Kun Tan ◽  
Meiling Yin ◽  
...  
Keyword(s):  
Carbon Black ◽  
Physical Adsorption ◽  
Fixed Bed ◽  
Graphitized Carbon Black ◽  
Order Kinetic ◽  
Solution Ph ◽  
Thermodynamic Studies ◽  
Graphitized Carbon ◽  
Adsorption Processes ◽  
Text Interaction

Adsorption of gemfibrozil (GF) from aqueous solution by highly/lowly graphitized carbon black (GCB-H/GCB-L) was investigated by batch and fixed-bed experiments. Results showed that the adsorption of GF onto GCB greatly depended on solution pH and graphitization of carbon. The pseudo-second-order kinetic model was found to be more appropriate in describing the adsorption processes of two GCBs. The adsorption equilibriums were well fitted with the Langmuir isotherm model, and GCB-H exhibited a higher adsorption capacity of 47.68 mg g−1 at 298 K, compared with GCB-L of 4.33 mg g−1. GCB-H achieved 69.76% GF removals in simulated water after 6 h, indicating its potential practicability. The GCBs were characterized by X-ray diffraction (XRD), scanning electron microscope (SEM) and Fourier transform infrared spectroscopy (FTIR), and the results indicated that the [Formula: see text]-[Formula: see text] interaction was strongly involved in the adsorption. Thermodynamic studies further suggested that the adsorption of GF on GCB-H was exothermic, which could happen spontaneously at any temperature mainly through [Formula: see text]-[Formula: see text] interaction for physical adsorption on the surface of the plane.

Changes of mineralogical and surface properties of water dispersible clay after acid treatment of soils

Clay Minerals ◽  
1995 ◽  
Vol 30 (2) ◽  
pp. 149-155 ◽  
Author(s):  
G. Józefaciuk ◽  
Z. Sokołowska ◽  
S. Sokołowski ◽  
A. Alekseev ◽  
T. Alekseeva
Keyword(s):  
Amorphous Material ◽  
Distribution Functions ◽  
Water Dispersible ◽  
Ph Values ◽  
Surface Areas ◽  
Mineral Phases ◽  
Adsorption Energy Distribution ◽  
Adsorption Energy Distribution Functions ◽  
Energy Distribution Functions ◽  
Crystalline Forms

AbstractMineralogical and water adsorption properties of water dispersible clays extracted from five soils of different typology after treatment with acid to different pH levels, were studied. The mineral composition, total and divalent iron content, surface areas and average adsorption energies of water dispersible clays were complicated functions of pH, reflecting the simultaneous effects of mineral destruction and aggregate disruption processes under influence of protons on soils. The magnetic susceptibilities of water dispersible clays were the lowest at pH 2 and roughly constant at higher pH values indicating the dissolution of crystalline forms of Fe below pH 3. The broadening of the peaks of adsorption energy distribution functions with decrease in pH is related to increasing formation of amorphous material from mineral phases.

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