Reactions in scCO2 are frequently limited by the low polarity of the solvent. This may result in low solute/ product solubility or low catalyst activity. The use of more polar sc fluids such as difluoromethane (HFC 32) can circumvent many of these issues and facilitate reactions that are not possible in CO2. We demonstrate the use of HFC 32 for three types of reaction; an esterification reactio...

The influence of change of temperature on the carbonic acidbase-protein equilibrium in blood or serum involves three factors: (1) Change in solubility of CO2 in serum or blood. (2) Change in the equilibrium constants of the buffer systems in the blood. (3) Change in the equilibrium constant for the dissociation of water. The fact that the solubility of CO2 changes with temperature has naturally...

The present work reports on the gas transport behavior of mixed matrix membranes (MMM) which were prepared from multi-walled carbon nanotubes (MWCNTs) and dispersed within polymers of intrinsic microporosity (PIM-1) matrix. The MWCNTs were chemically functionalized with poly(ethylene glycol) (PEG) for a better dispersion in the polymer matrix. MMM-incorporating functionalized MWCNTs (f-MWCNTs) ...

Variations in the mean temperature of the ocean, on time scales from millennial to millions of years, in the past and projected for the future, are large enough to impact the geochemistry of the carbon, oxygen, and methane geochemical systems. In each system, the time scale of the temperature perturbation is key. On time frames of 1–100 ky, atmospheric CO2 is controlled by the ocean. CO2 temper...

Antioxidants are widely used in food products to preserve deterioration of their lipid components. Lately the nutraceutical properties of such compounds have driven much attention for their relationship with human health, and then natural antioxidants are preferred. Among natural antioxidants, rosemary (rosmarinus officinalis L.) has been described as one of the spices with higher antioxidant a...

These CO2-philic open-chain organophosphorous chelating ligands, i.e. diethylene glycol bis (2, 4, 4-trimethyl-1-pentyl) dimethyl diphosphate (EG2TP), diethylene glycol bis (3, 5, 5-trimethyl-1-hexyl) dimethyl diphosphate (EG2TH), and diethylene glycol dioctyl dimethyl diphosphate (EG2Oct), ethylene glycol bis(2-isopropoxyethyl) dimethyl diphosphate (EG2IPE), triethylene glycol bis(2-isopropoxy...

Ionic liquids (ILs) are organic salts that have melting points around room temperature. They have received tremendous attention recently due to their low volatility and subsequent potential to reduce air pollution if used as replacements for volatile organic solvents. As a result, they have the potential to be used in a wide variety of chemical processing applications, including as solvents for...