Adsorption of sodium dodecylsulfate on a hydrotalcite-like compound. Effect of temperature, pH and ionic strength
作者： Paulo C Pavan , Eduardo L Crepaldi , Gilmar de A Gomes , João B Valim , None
DOI: 10.1016/S0927-7757(98)00847-4
关键词: Layered double hydroxides 、 Critical micelle concentration 、 Inorganic chemistry 、 Hydrotalcite 、 Adsorption 、 Hydroxide 、 Electrokinetic phenomena 、 Chemistry 、 Ionic strength 、 Scanning electron microscope
摘要: Abstract The study of the adsorption surfactants on mineral oxides has received considerable attention. Extensive work been done in order to better understand such processes. In present we investigated influence temperature, pH and ionic strength sodium dodecylsulfate (SDS) a layered double hydroxide (LDH). results were compared those obtained for which already explained by reported models. analyzed variables was similar predicted these Measurements electrokinetic potential suspensions SDS-adsorbed LDH particles made monitor variation this as function adsorption. showed characteristic behavior that can be related an overpopulation unimers electric layer at concentrations near critical micelle concentration (CMC). Scanning electron microscopy used obtain high magnification images particles, image adsorbed equilibrium ranging from CMC highest used.
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