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Solubilization of Mixture of Hydrocarbon Oils by C12E8 Nonionic Surfactant Solution  

Lim, JongChoo (Department of Chemical and Biochemical Engineering, Dongguk University)
Publication Information
Applied Chemistry for Engineering / v.19, no.1, 2008 , pp. 59-65 More about this Journal
Abstract
The equilibrium solubilization capacity of the mixture of hydrocarbon oils by $C_{12}E_8$ nonionic surfactant micellar solution was measured at $23^{\circ}C$ by gas chromatography (GC) analysis. Experimental results indicated that the solubilization capacity for pure alkanes was found to decrease almost linearly with the alkane carbon number (ACN) of the hydrocarbon oil. For the binary mixture systems of the hydrocarbon oils both selective and nonselective solubilization behaviors were observed depending on the difference in ACN of the two hydrocarbon oils. Equilibrium solubilization tests for the hydrocarbon oil mixtures in $C_{12}E_8$ surfactant solutions such as the three n-octane/n-nonane, n-nonane/n-decane and n-decane/n-undecane mixture systems suggest almost non-selective solubilization. On the other hand, the n-octane/n-decane and n-octane/n-undecane systems, where difference in ACN of the two hydrocarbon oils is greater than 1, selective solubilization in favor of n-octane was conclusively demonstrated.
Keywords
equilibrium solubilization capacity; $C_{12}E_8$ nonionic surfactant; micelle; hydrocarbon oil mixtures; selectivity;
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