High-pressure equilibrium of menthol+CO2

High pressure vapor–liquid equilibrium for the ternary system ethanol/(±)-menthol/carbon dioxide

“…The results obtained are given in Fig. 2, which shows good agreement between our experimental results and those of Sovová et al [14], with a maximum deviation of ±0.2%. Both the solubility of CO 2 in the (±)-menthol liquid phase and the solubility of (±)-menthol in the CO 2 vapor phase increased sharply with pressure from 8 to 10 MPa.…”

“…Nevertheless, for the (±)-menthol/CO 2 system only experimental data for the vapor phase was presented by Sovová et al [14]. Therefore we also measured the liquid and the vapor phase compositions of the (±)-menthol /CO 2 binary.…”

“…Experimental VLE data for the binary systems (±)-menthol /CO 2 and ethanol/CO 2 were already reported [14][15][16]. Nevertheless, for the (±)-menthol/CO 2 system only experimental data for the vapor phase was presented by Sovová et al [14].…”

Production of theophylline nanoparticles using rapid expansion of supercritical solutions with a solid cosolvent (RESS-SC) technique

“…In the case of using l-menthol, the temperature and pressure of the section for preparing the supercritical solution of the solid solute and the solid cosolvent (i.e., the equilibrium temperature, T eq and pressure, p eq ), the temperature of the pre-expansion section (i.e., the pre-expansion temperature, T pre-exp ), and the temperature of the expansion nozzle (i.e., the nozzle temperature, T noz ) were as follows: (i) T eq = 308.2 K, p eq = 14.0 MPa, T pre-exp = 313.2 K and T noz = 323.2 K, (ii) T eq = 308.2 K, p eq = 18.0 MPa, T pre-exp = 313.2 K and T noz = 323.2 K, and (iii) T eq = 338.2 K, p eq = 14.0 MPa, T pre-exp = 338.2 K and T noz = 343.2 K. The experimental conditions in the case of using vanillin were as follows: T eq = 313.2 K, p eq = 22.0 MPa, T pre-exp = 338.2 K and T noz = 343.2 K. These experimental conditions were so selected as to prevent an appearance of heterogeneous gas-liquid phases of CO 2 + l-menthol binary system or CO 2 + vanillin binary system in accordance with the solid-liquid-vapor equilibria of the systems [48][49][50]. The spray distance, L spray was varied with 3, 5 and 7 cm and the collection temperature, T collect was varied with 265.2, 283.2 and 303.2 K to examine the effects of the operation parameters on the production of particles by RESS-SC.…”

Polystyrene Wastes: Threat or Opportunity?

“…The heat of combustion of PS is approximately 41 MJ/kg, comparable to the traditional value for oil. In a properly designed combustion device, complete combustion could be achieved resulting in water, carbon dioxide and trace levels of ash [41].…”