Phase behaviour of heavy petroleum fractions in pure propane and n-butane and with methanol as co-solvent

Chemical characterization and phase behaviour of grape seed oil in compressed carbon dioxide and ethanol as co-solvent

“…The experimental apparatus and procedure have been described in detail in a variety of studies [25][26][27][28][29][30][31][32] and were extensively validated [33][34][35][36]. The experimental apparatus was employed to conduct the experiments up to 20.6 MPa and T = 343.15 K. After preliminary tests, the molar ratio of ethanol to CO 2 was kept constant at 1:3 for all experimental measurements, which provided proper visualization of phase transitions and required an adequate time for solubilization.…”

Investigation of volumetric fluid properties of (heptane + hexadecane) at reservoir conditions

“…Petroleum reservoirs are still the major source of energy in the world, however, the larger oil reserves are already depleted and the rest are in the last decades of their production. Therefore, careful planning for maximum recovery from petroleum reservoirs, as well as maximum efficiency in the refining of crude oils and natural gases is vital (Canziani et al, 2009). Hydrocarbons form the basic components of crude oil and natural gas.…”

Phase Equilibria of the Systems CO2 + Styrene, CO2 + Safrole, and CO2 + Styrene + Safrole

“…The apparatus and experimental procedure used in this work for phase equilibrium measurements are similar to that described previously, − and just a brief description is presented here. The experimental apparatus was based on the synthetic method with visualization, as classified by Dohrn and co-workers and Fonseca and co-workers .…”