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Crystal Structure of Tetramethylammonium-Exchanged Vermiculite
Tetramethylammonium Vermiculite TMA-Vermiculite Vermiculite
2011/12/23
Abstract: Vermiculite crystals from Santa Olalla, Spain, were intercalated with tetramethylammonium (TMA) after Na saturation. The resulting TMA-vermiculite showed near perfect 3-dimensional stacking ...
FTIR Study of Competitive Water-Arene Sorption on Tetramethylammonium- and Trimethylphenylammonium-Montmorillonites
Alkylammonium Benzene Ethylbenzene Infrared spectroscopy Organoclay Sorption Water
2011/12/1
Abstract: Montmorillonites saturated with small quaternary alkylammonium ions such as tetramethylammonium (TMA) or trimethylphenylammonium (TMPA) are excellent sorbents for aromatic pollutants. In som...
Tetramethylphosphonium- and Tetramethylammonium-Smectites as Adsorbents of Aromatic and Chlorinated Hydrocarbons: Effect of Water on Adsorption Efficiency
Adsorbent Adsorption efficiency Langumir isotherms Monolayer volumes Organo-clays Shrinkage of pores Sorption from water Surface area
2011/12/28
Tetramethylphosphonium-smectite (TMP-clay) and tetramethylammonium-smectite (TMA-clay), were prepared and characterized as adsorbents for a series of aromatic and chlorinated hydrocarbons. The sorptio...
Adsorption of Benzene, Toluene, and Xylene by Two Tetramethylammonium-Smectites Having Different Charge Densities
Adsorption Aromatic hydrocarbons Benzene Charge density Smectite Tetramethylammonium Water
2012/1/4
A high-charge smectite from Arizona [cation-exchange capacity (CEC) = 120 meq/100 g] and a low-charge smectite from Wyoming (CEC = 90 meq/100 g) were used to prepare homoionic tetramethylammonium (TMA...
Identification of Tetramethylammonium Ion in Methylated NH4-Bentonite
Bentonite Diazomethane Exchange Montmorillonite Tetramethylammonium
2011/11/18
Abstract: Treating NH4-bentonite with diazomethane results in methylation of adsorbed ammonium with the formation of the tetramethylammonium ion. This ion, which can be completely removed through ion ...