Diffusion and mass transfer in supercritical fluids

Fast heat transfer calculations in supercritical fluids versus hydrodynamic approach.

This study investigates the heat transfer in a simple pure fluid whose temperature is slightly above its critical temperature. We propose an efficient numerical method to predict the heat transfer in such fluids when the gravity can be neglected. The method, based on a simplified thermodynamic approach, is compared with direct numerical simulations of the Navier-Stokes and energy equations perf...

Electrochemistry in supercritical fluids

A wide range of supercritical fluids (SCFs) have been studied as solvents for electrochemistry with carbon dioxide and hydrofluorocarbons (HFCs) being the most extensively studied. Recent advances have shown that it is possible to get well-resolved voltammetry in SCFs by suitable choice of the conditions and the electrolyte. In this review, we discuss the voltammetry obtained in these systems, ...

Mass Transfer by Diffusion

Electrodeposition from supercritical fluids.

Recent studies have shown that it is possible to electrodeposit a range of materials, such as Cu, Ag and Ge, from various supercritical fluids, including hydrofluorocarbons and mixtures of CO2 with suitable co-solvents. In this perspective we discuss the relatively new field of electrodeposition from supercritical fluids. The perspective focuses on some of the underlying physical chemistry and ...

Supercritical Fluids ... a primer

I. Solubility in Supercritical Fluids II. Implications of Solubility in Supercritical Fluids III. Operation of s Supercritical Fluid Extraction Process IV. Industrial Applications of Supercritical Fluid Extraction A. Purification of Reactive Monomers B. Extraction/Fractionation of Polymers C. Extraction of Active Components from Botanical Substrates D. Supercritical Fluids in Non-Extractive App...