Supercritical fluids find use in various areas in oil and gas production operations due to their
unique properties. Supercritical CO 2 (sc-CO 2) with its reduced viscosity, increased …

The relatively low density and viscosity of carbon dioxide (CO 2) in supercritical state create
several drawbacks, including gravity override, viscous fingering, water production/treatment …

Both ionic liquids and water are typical green solvents. In this work, the phase behavior of
the ternary system consisting of ionic liquid 1-butyl-3-methylimidazolium …

As green solvents, ionic liquids (ILs) can be substitutes for traditional organic solvents, and
form useful microemulsions with water. Microemulsions consisting of the IL, 1-butyl-3 …

Generally, a microemulsion consists of oil, water, surfactant, and sometimes cosurfactant.
Herein, we report a surfactant-free microemulsion (denoted as SFME), consisting of oleic …

For some 15 years the attainment of efficient, nonfluorinated CO2-active surfactants has
been a Holy Grail for researchers spanning pure and applied chemical sciences. This article …

Despite a great promise in the enhanced oil recovery in tight formations, CO2 flooding with
surfactants is hindered due to the low surfactant solubility in supercritical CO2 (scCO2) …

Liquid or supercritical carbon dioxide has important environmental and economic
advantages over petrochemical solvents currently used for industrial processes. However …

The microstructure, micropolarity and solubilizations of a surfactant-free microemulsion
(SFME) containing diethyl malonate (DEM), ethanol (EtOH), and water were investigated in …

We have examined the interfacial properties of several fluorinated surfactants in a
water/CO2 mixture with a pendant drop tensiometer and revealed the relationships between …