The Adsorption of Sulphonate on Fluorite Single Crystals as Examined by in-situ FT-IR Internal Reflectance Spectroscopy
| Autor: | Ahmed Yehia, Asem A. Atia, Badr G. Ateya |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 1997 |
| Předmět: | |
| Zdroj: | Adsorption Science & Technology, Vol 15 (1997) |
| Druh dokumentu: | article |
| ISSN: | 0263-6174 2048-4038 02636174 |
| DOI: | 10.1177/026361749701500905 |
| Popis: | The adsorption densities of dioctyl sodium sulphosuccinate (AOT) at the surface of a fluorite single crystal were calculated from in situ FT-IR internal reflection spectroscopic data. The results were analyzed according to the modified Frumkin isotherm in order to evaluate the lateral interaction coefficient, a, and the adsorption free energy change, ΔG θ 0 . The adsorption kinetics of AOT at a fluorite internal reflection element (IRE) were studied. In addition, by monitoring the –CH 2 adsorption band using polarized light, it was possible to investigate the orientation of the adsorbed species on the fluorite IRE surface. |
| Databáze: | Directory of Open Access Journals |
| Externí odkaz: |
|