Determination of surface free energy components for heterogeneous solids by means of inverse gas chromatography at finite concentrations

1998 ◽  
Vol 8 (9) ◽  
pp. 1953-1961 ◽  
Author(s):  
V. I. Bogillo ◽  
V. P. Shkilev ◽  
A. Voelkel
Keyword(s):  
Gas Chromatography ◽  
Free Energy ◽  
Surface Free Energy ◽  
Inverse Gas Chromatography ◽  
Heterogeneous Solids ◽  
Finite Concentrations ◽  
Energy Components

scholarly journals Determination of the surface properties of kaolinite by inverse gas chromatography

2018 ◽  
Vol 2017 (2) ◽  
pp. 319-328 ◽  
Author(s):  
Ceyda Bilgiç
Keyword(s):  
Gas Chromatography ◽  
Free Energy ◽  
Inverse Gas Chromatography ◽  
Specific Enthalpy ◽  
Free Energy Of Adsorption ◽  
Dispersive Component ◽  
Enthalpy Of Adsorption ◽  
Kaolinite Surface ◽  
Acceptor Numbers

Abstract Inverse gas chromatography (IGC) was applied to characterize the surface of kaolinite. The adsorption thermodynamic parameters (the standard enthalpy (∆H0), entropy (∆S0) and free energy of adsorption (∆G0), the dispersive component of the surface energy (γsd), and the acid/base character of kaolinite surface were estimated by using the retention time of different non-polar and polar probes at infinite dilution region. The specific free energy of adsorption (∆Gsp), the specific enthalpy of adsorption (∆Hsp), and the specific entropy of adsorption (∆Ssp) of polar probes on kaolinite were determined. (∆Gsp) values were correlated with the donor and modified acceptor numbers of the probes to quantify the acidic (KA) and the basic (KD) parameters of the kaolinite surface. The values obtained for the parameters KA and KD indicated a basic character for kaolinite surface.

Inverse Gas Chromatography Study on London Dispersive Surface Free Energy and Electron Acceptor–Donor of Fluconazole Drug

2017 ◽  
Vol 62 (7) ◽  
pp. 2090-2094 ◽  
Author(s):  
Praveen Kumar Basivi ◽  
Visweswara Rao Pasupuleti ◽  
Ramanaiah Seella ◽  
Madhusudana Reddy Tukiakula ◽  
Subramanyam Reddy Kalluru ◽  
...  
Keyword(s):  
Gas Chromatography ◽  
Free Energy ◽  
Surface Free Energy ◽  
Electron Acceptor ◽  
Inverse Gas Chromatography ◽  
Dispersive Surface Free Energy

Determination of the galena surface free energy components from contact angle measurements

1992 ◽  
Vol 31 (3) ◽  
pp. 235-241 ◽  
Author(s):  
Bronisław Jańczuk ◽  
Wiesław Wójcik ◽  
Anna Zdziennicka ◽  
Fernando González-Caballero
Keyword(s):  
Contact Angle ◽  
Free Energy ◽  
Surface Free Energy ◽  
Angle Measurements ◽  
Contact Angle Measurements ◽  
Energy Components
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