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Ayman M. Atta,Hamad A. Al-Lohedan,Mahmood M.S. Abdullah,Shymaa M. ElSaeed 한국공업화학회 2016 Journal of Industrial and Engineering Chemistry Vol.33 No.-
This work reports the synthesis and application of amphiphilic ionic liquid (IL) in the petroleum field. Theionic liquid was synthesized by etherification of octadecylamine with tetraethylene glycol followed byquaternization with p-toluene sulfonic acid. The chemical structure was confirmed by NMRspectroscopy. The surface activity, aggregation, adsorption, and the solubility of the ethoxylatedoctadecylammonium tosylate were investigated. The interfacial parameters between IL aqueoussolution and crude oil emulsions were determined from interfacial tension measurement. The resultsshowed the dependence of interfacial tension on the concentration, crude oil emulsion composition andchemical structure of the prepared amphiphiles. The mechanism of aggregation and adsorptionethoxylated octadecylammonium tosylate was proposed and confirmed at different interfaces. Thedemulsification and oil spill dispersion efficiencies were investigated at different amphiphileconcentrations. The performance of amphiphilic ILs revealed that their demulsification efficiencyreached 100% and the settling time required for efficient separation decreased with increment of watercontents of crude oil emulsions. Moreover, the prepared amphiphilic ILs achieved oil spill dispersionefficiency more than 80% at surfactant oil ratio (1:25).
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