Synthesis gas solubility in dodecane. Application in Fischer-Tropsch synthesis

In the work, the measurement of the solubility of synthesis gas was carried out in the temperature range of 100–300°C and pressure range of 1.0–5.0 MPa. n–dodecane was used as a solvent, as it is one of the most frequently used solvents in the liquid-phase Fischer–Tropsch synthesis. Based on the results obtained in the work, thermodynamic parameters of absorption were calculated, such as the Henry constant, absorption enthalpy and apparent activation energy of absorption. The phase equilibrium was calculated using the Soave–Redlich–Kwong cubic equation of state. It was shown that the SRK cubic equation of state can be used to predict the optimal process conditions for the liquid–phase Fischer–Tropsch process. The applicability of the data was confirmed by experiments on the variation of temperature and pressure in the synthesis of hydrocarbons from synthesis gas on a cobalt catalyst supported on silica.