Liquid Viscosities of Carbon Dioxide + Hydrocarbons from 310 K to 403 K

Abstract

Kinematic viscosities of twelve mixtures made from pentane, hexane, heptane, octane, decane, and carbon dioxide were measured using a rolling ball viscometer. The temperatures ranged from 310 K to 403 K and the pressures from 0.8 MPa to 12 MPa. Kinematic viscosities were converted to absolute viscosities using mixture densities estimated from a modified Rackett equation. Calculated absolute viscosities for the decane + CO2 system were within 0.5% of the values by Cullick and Mathis. All viscosities of hydrocarbon mixtures and hydrocarbons with CO2 could be predicted from the Orbey and Sandler correlation with an average absolute deviation of 4.1%. We found that the Lohrenz, Bray, and Clark viscosity correlation cannot be used to estimate the viscosity of the mixtures containing CO2 with reasonable accuracy.

Experimental Study of Pore-Scale Mechanisms of Carbonated Water Injection

“…CWI also shows improved displacement efficiency at larger field scale due to a favourable increase in water viscosity (Tumasyan et al 1969) and decrease in oil viscosity (Barrufet et al 1996).…”

Effect of operational parameters on the performance of carbonated water injection: Experimental and numerical modeling study

“…Furthermore, oil viscosity decreases as more CO 2 diffuses into oil [9][10]. Tumasyan [11], Kumagai and Yokoyama [12] and Uchida, et al [13] in different attempts, all determined carbonated water viscosity as a function of CO 2 concentration.…”

Silver nanoparticles synthesis using H2 as reducing agent in toluene–supercritical CO2 microemulsion

“…In the synthesis process, AgNO 3 was reduced by hydrogen in the micro-reactor of the microemulsion, and AgNPs nucleation and crystal growth were controlled by the molar ratio (ω) of water to surfactant in the micro-reactor of microemulsion, because the size and microenvironment of micro-reactor in the microemulsion depend on the molar ratio ω [37]. H 2 reductant was dispersed evenly in the toluene-scCO 2 microemulsion and it was easy to control the reduction in the synthesis process of AgNPs, and to avoid AgNPs with different sizes due to uneven distribution of reductant in the medium, because scCO 2 dissolved in toluene enhanced the solubility of H 2 in toluene [38] and decreased the viscosity of the mixture [39,40]. After AgNPs were synthesized in toluene-scCO 2 microemulsion, CO 2 and residual H 2 were removed by reducing pressure, and a brownish silver microemulsion was obtained.…”