A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Adsorption of dodecyl trimethylammonium and hexadecyl trimethylammonium onto kaolinite — Competitive adsorption and chain length effect
AbstractAdsorption of dodecyl trimethylammonium (DDTMA) and hexadecyl trimethylammonium (HDTMA) from single and mixed surfactant solutions onto kaolinite was investigated in this study. It was found that the surfactant chain length had minimal effects on the amount of cations desorbed. In contrast, the amounts of surfactant and counterion bromide adsorbed were strongly affected by surfactant chain lengths. Compared to DDTMA, HDTMA and counterion bromide adsorption was much higher. This fact further verified that both cation exchange and hydrophobic interaction played an important role in cationic surfactant adsorption on negatively charge mineral surfaces. The results also indicate that chain length has a minimal influence on surfactant adsorption via cation exchange, but a longer chain length promotes stronger hydrophobic interaction and thus, resulted in a higher surfactant adsorption.
Adsorption of dodecyl trimethylammonium and hexadecyl trimethylammonium onto kaolinite — Competitive adsorption and chain length effect
AbstractAdsorption of dodecyl trimethylammonium (DDTMA) and hexadecyl trimethylammonium (HDTMA) from single and mixed surfactant solutions onto kaolinite was investigated in this study. It was found that the surfactant chain length had minimal effects on the amount of cations desorbed. In contrast, the amounts of surfactant and counterion bromide adsorbed were strongly affected by surfactant chain lengths. Compared to DDTMA, HDTMA and counterion bromide adsorption was much higher. This fact further verified that both cation exchange and hydrophobic interaction played an important role in cationic surfactant adsorption on negatively charge mineral surfaces. The results also indicate that chain length has a minimal influence on surfactant adsorption via cation exchange, but a longer chain length promotes stronger hydrophobic interaction and thus, resulted in a higher surfactant adsorption.
Adsorption of dodecyl trimethylammonium and hexadecyl trimethylammonium onto kaolinite — Competitive adsorption and chain length effect
Li, Zhaohui (author) / Gallus, Linda (author)
Applied Clay Science ; 35 ; 250-257
2006-09-03
8 pages
Article (Journal)
Electronic Resource
English
Adsorption , Cation exchange capacity , DDTMA , HDTMA , Kaolinite , FTIR
Adsorption properties of tetradecyl- and hexadecyl trimethylammonium bentonites
| Online Contents | 2005
Reaction of acid activated montmorillonites with hexadecyl trimethylammonium bromide solution
| Online Contents | 2009
Reaction of acid activated montmorillonites with hexadecyl trimethylammonium bromide solution
| Online Contents | 2009