Dehydration of Cyclohexanol by Phosphoric Acid on Glass Beads at Varying Interfaces
Coriasso, Christopher D.
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The applications of surface and interfacial chemistry have been instituted into a wide variety of industries including nanotechnology, biochemistry, fuel production, waste management, and paper production. Surface and interfacial chemistry encompass numerous phenomena regarding the properties of two bulk phases at an interface. The characteristics of an interface between two molecules may affect the chemical characteristics of the reacting molecules. Specifically, the acid-base interactions of these bulk phases can contribute to the interface formation at the boundary of the two molecules. In the present study, the interactions between cyclohexanol and phosphoric acid on glass beads were investigated at varying areas of interfacial boundaries over time. Competing processes such as diffusion rate, evaporation rate and reaction rate played a crucial role in these interfacial interactions. Analysis of the loss of cyclohexanol by the dehydration reaction with phosphoric acid was scrutinized in heterogeneous media as well as homogenous media. It was concluded that the larger the area of the interface between the reactants was, the greater the acid-base interaction between cyclohexanol and phosphoric acid was and, ultimately, the greater the loss of cyclohexanol over time. The dehydration rate of cyclohexanol increased with an increased interfacial region. The dehydration rate of cyclohexanol by phosphoric acid was determined to be e-0.012x, e-0.006x, and e-0.002x at droplet distances of 0 mm, 50 mm, and 91 mm, respectively.