Free energy of adsorption

In this work, we study interactions of five different hemicellulose models, i.e. Galactoglucomannan, O-AcetylGalactoglucomannan, Fuco-Galacto-Xyloglucan, 4-O-Methylglucuronoxylan, and 4-O-Methylglucuronoarabinoxylan, and their respective binding strength to cellulose nanocrystals by molecular dynamics simulations.

14p viginny 30-12-2022 9 2   Download

In this study, the surface thermodynamic properties and more particularly, the dispersive component γ d s of the surface energy of crystals of a Zr-based MOF, UiO-66 (Zr6O4(OH)4(BDC)6; BDC = benzene 1,4- dicarboxylic acid), the specific interactions, and their acid-base constants were determined by using different molecular models and inverse gas chromatography methods.

13p viginny 23-12-2022 6 3   Download

The selectivity of 4-(Decyloxy) benzoic acid (DBA) liquid crystal in surface adsorption region (303.2–328.2K) and thermodynamic region (423.2 – 433.2K) 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.

13p tudichquannguyet 29-11-2021 8 1   Download

In the present work, diethanol amine modified polystyrene based polymer (PVBC-Diethanol amine) was synthesized and characterized, then surface properties of the polymer were examined by inverse gas chromatography method at infinite dilution. The retention diagrams obtained based on the interaction of polar and nonpolar probes with the polymer were drawn over a temperature range from 30 to 55 °C.

10p tudichquannguyet 29-11-2021 10 1   Download

In this report, the adsorption of Zn(II) ion on g- and a-MnO2 nanostructures was compared. The results showed that the maximum adsorption was obtained at pH = 4.0 for both materials and after 60 minutes for g-MnO2 and 80 minutes for a-MnO2 . Adsorption isotherm models demonstrated that the Langmuir was the best model to describe the adsorption of Zinc(II) on g- and a-MnO2 because of the highest correlation coefficient (R2 ), the smallest root mean square error (RMSE), and the nonlinear chi-squared test (c2 ) values.

6p caygaocaolon1 13-11-2019 23 2   Download