A study of the adsorption properties of the hypercross-linked polystyrene sorbents Styrosorb by gas chromatography. Effect of the conditioning temperature

1999 ◽  
Vol 48 (8) ◽  
pp. 1484-1487 ◽  
Author(s):  
L. D. Belyakova ◽  
E. Kurbanbekov ◽  
O. G. Larionov ◽  
M. P. Tsyurupa ◽  
V. A. Duvankov
Keyword(s):  
Gas Chromatography ◽  
Adsorption Properties ◽  
Conditioning Temperature

Adsorption of organics on thermally treated solids obtained from colloidal silica

1987 ◽  
Vol 52 (3) ◽  
pp. 572-581 ◽  
Author(s):  
Miroslav M. Kopečni ◽  
Slobodan K. Milonjic ◽  
Wladyslaw Rudzinski ◽  
Jacek Jagiello
Keyword(s):  
Gas Chromatography ◽  
Thermodynamic Parameters ◽  
Adsorption Isotherms ◽  
Colloidal Silica ◽  
Adsorption Properties ◽  
Thermal Pretreatment ◽  
Lateral Interactions ◽  
Adsorbed Molecules ◽  
Temperature Range ◽  
Thermally Treated

Adsorption isotherms of three adsorbates on the solid beads obtained from colloidal silica were determined by means of gas chromatography at low surface coverages, when lateral interactions between the adsorbed molecules are negligible. The influence of thermal pretreatment on the adsorption properties of the solids was investigated in the temperature range from 343 to 423 K, while the solids were heated between 523 K and 1 223 K. The thermodynamic parameters of adsorption have been determined and used to discuss the adsorbate-adsorbent interactions.

Adsorption properties of a Pd/γ-Al2O3 catalyst using inverse gas chromatography

2004 ◽  
Vol 70 (1-3) ◽  
pp. 109-118 ◽  
Author(s):  
Eva Dı́az ◽  
Salvador Ordóñez ◽  
Aurelio Vega ◽  
José Coca
Keyword(s):  
Gas Chromatography ◽  
Inverse Gas Chromatography ◽  
Adsorption Properties ◽  
Al2o3 Catalyst

scholarly journals Adsorption Properties of Silica with Chemically Bonded Amino and Guanidino Groups

1997 ◽  
Vol 15 (3) ◽  
pp. 147-154 ◽  
Author(s):  
T.M. Roshchina ◽  
V.Ya. Davydov ◽  
N.M. Khrustaleva ◽  
A.A. Mandrugin ◽  
K.B. Gurevich
Keyword(s):  
Gas Chromatography ◽  
Ir Spectroscopy ◽  
Polymer Film ◽  
Polar Compounds ◽  
Adsorption Properties ◽  
Silica Support ◽  
Amino Groups ◽  
Organic Bases ◽  
Properties Of Materials ◽  
Static Conditions

The influence of the non-homogeneity of the silica support and the nature and amount of modifier employed on the adsorption properties of materials with chemically bonded amino and guanidino groups was studied by means of gas chromatography (GC), adsorption measurements under static conditions and IR spectroscopy. The results indicate that adsorbents coated with a polymer film of amino groups have a nearly uniform surface. These adsorbents can be used for GC investigations and for the separation of polar compounds, including organic bases.

Sol-Gel Synthesis of Chelate Containing Materials for Gas Chromatography

2014 ◽  
Vol 1040 ◽  
pp. 448-452 ◽  
Author(s):  
Mikhail A. Gavrilenko ◽  
Yurii G. Slizhov ◽  
Zhanna V. Faustova ◽  
Tatiana A. Kasymova ◽  
Nataliya A. Gavrilenko
Keyword(s):  
Gas Chromatography ◽  
Sol Gel ◽  
Adsorption Properties ◽  
Chelate Complexes ◽  
Copper Acetylacetonate ◽  
Specific Retention Volumes ◽  
Specific Retention ◽  
Retention Volumes ◽  
Two Phases ◽  
Sol Gel Synthesis

The adsorption properties of mesoporous chelate containing sorbents which were prepared in two phases with europium and copper acetylacetonate complexes and PEG-115 as surfactant, were evaluated by column experiments.The adsorption properties of mesoporous silica with chelate complexes for some organic compounds were evaluated by gas chromatography. The best separation was achieved for europium acetylacetonate. From specific retention volumes measured at various temperatures the thermodynamic parameters of separation is discussed. Mutual separation of oxygen containing substances could also be demonstrated.

scholarly journals Studies of adsorption of polychlorocarbons on carbon blacks by gas chromatography

1985 ◽  
Vol 2 (4) ◽  
pp. 219-228 ◽  
Author(s):  
E. V. Zagorevskaya ◽  
N. V. Ishchenko ◽  
A. V. Kiselev ◽  
N. V. Kovaleva
Keyword(s):  
Gas Chromatography ◽  
Carbon Black ◽  
Adsorption Properties ◽  
High Adsorption ◽  
Heats Of Adsorption ◽  
Carbon Blacks ◽  
Before And After ◽  
Retention Volumes ◽  
High Adsorption Capacity ◽  
Airborne Chemicals

Adsorption properties of carbon black before and after modification to polyhalogenohydrocarbons, including polyorganochlorine pesticides, have been investigated. It has been shown that graphitised thermal carbon blacks and carbochroms possess high adsorption capacity relative to the above compounds and can be used as supporting adsorbents to analyse these airborne chemicals. Modification raises the selectivity of adsorbents to the compounds being investigated and lowers retention volumes and heats of adsorption, which makes it possible to carry out thermal desorption of the accumulated species at lower temperatures.

scholarly journals Adsorption Properties and Structure of Some Active Carbons

1993 ◽  
Vol 10 (1-4) ◽  
pp. 211-220 ◽  
Author(s):  
I.A. Bardina ◽  
E.V. Kalashnikova ◽  
N.V. Kovaleva ◽  
T.A. Rudnitskaya ◽  
N.K. Shonya
Keyword(s):  
Gas Chromatography ◽  
Carbon Black ◽  
Active Carbon ◽  
Graphitized Carbon Black ◽  
Adsorption Properties ◽  
Static Method ◽  
Active Carbons ◽  
Heats Of Adsorption ◽  
Graphitized Carbon ◽  
Low Coverage

Gas chromatography has been used to determine the initial low-coverage heats of adsorption of C2–C6 hydrocarbons and their derivatives on active carbon and graphitized carbon black. The porous structure of the active carbon has been determined from the adsorption isotherms of benzene measured at 25°C by a vacuum static method. The isotherms have been analyzed with the help of the BET and Dubinin–Radushkevich theories.

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