Abstract
The solubility of ethylene in N-methyl-2-pyrrolidone (NMP) was evaluated at different temperatures, including 278.2, 298.2, and 328.2 K, and different pressures in an experimental pressure decaying setup. The kinetic and equilibrium results were obtained for pure gas absorption. Henry’s law constants were calculated at different temperatures. Eventually, thermodynamic modeling was done using Peng Robinson equation of state (PR-EOS) and UNIQUAC activity coefficient model. The binary interaction parameters, τ12, τ21, were adjusted and optimized. Regarding the values obtained for binary interaction parameters, it was concluded that this solution has non-ideal behavior. Indeed, because of its low prediction error (3–11%), it was concluded that the correlated thermodynamic model could accurately predict the experimental data.
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