Document Type : Research Paper
Department of Chemical Engineering, University of Bojnord, Bojnord, Iran.
Department of Chemical Engineering, University of Bojnord, Bojnord, Iran
Due to high storage capacity, high dissociation enthalpy, and the appropriate melting point of gas hydrates, these compounds have a potential for many industrial applications. Tetra n-butylammonium halides are typical guest molecule involved in the formation of semiclathrate hydrates. In this manuscript, the dissociation enthalpy of methane/carbon dioxide/nitrogen + Tetra n-butylammonium Chloride semiclathrate hydrates is evaluated using the Clausius-Clapeyron equation. The equilibrium data are measured in a 460 cm3 stirred batch reactor using an isochoric pressure-search method. The dissociation enthalpy data were evaluated in the temperature range of (275.15 to 304.75) K and the pressure range of (0.36 to 10.57) MPa at (0 - 0.36) mass fraction of Tetra n-butylammonium Chloride. The results showed that the utilization of Tetra n-butylammonium Chloride increases the amount of dissociation enthalpy of semiclathrate hydrates per mole of the hydrated gas. By increasing the mass fraction of Tetra n-butylammonium Chloride, the amount of dissociation enthalpy per mole of hydrated gas increased.