Open AccessEvaluation of the surface properties of 4-(Decyloxy) benzoic acid liquid crystal and its use in structural isomer separation
Author(s) -
Birol Işık,
Fatih Çakar,
Özlem Cankurtaran
Publication year - 2021
Publication title -
turkish journal of chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.239
H-Index - 46
eISSN - 1303-6130
pISSN - 1300-0527
DOI - 10.3906/kim-2101-13
Subject(s) - chemistry , inverse gas chromatography , enthalpy , benzoic acid , selectivity , adsorption , alcohol , surface energy , dilution , chromatography , analytical chemistry (journal) , thermodynamics , organic chemistry , catalysis , physics
The selectivity of 4-(Decyloxy) benzoic acid (DBA) liquid crystal in surface adsorption region (303.2–328.2 K) and thermodynamic region (423.2 – 433.2 K) was investigated by inverse gas chromatography at infinite dilution (IGC-ID). The selectivity parameters of the structural isomer series named butyl acetate, butyl alcohol, and amyl alcohol series were calculated for the DBA using IGC-ID technique. Additionally, the surface properties including dispersive surface energy (gS D), free energy (DGA S), enthalpy (DHA S), and acidity-basicity constants were calculated with net retention volumes obtained from IGC-ID experiment results. When the DHA S and DGA S are constants, DBA surface was found to be an acidic character (KD/KA @ 0.89).