A [P44414][Cl]-NaCl-H2O ionic liquid-based aqueous biphasic system shows promising results for the separation of cobalt(II) and nickel(II) by homogeneous liquid-liquid extraction. The extracting phase consists of a hydrophilic ionic liquid that is salted-out by sodium chloride, indicating that there is no need for using hydrophobic ionic liquids.

Platinum extraction from different secondary sources has been experimentally tested by many researchers. In this article, dissolution of platinum in aqua-regia solution from two types of spent catalysts (reforming and nitric acid production) was kinetically studied. A variety of kinetic models for heterogeneous solid-liquid reactions, including homogeneous diffusion model, shrinking core model,...

To understand the mechanism behind the pitch change during the transient planar to the planar state transition of a cholesteric liquid crystal ͑while it is relaxing from the homeotropic state to the planar state͒, we studied a more controlled situation of pitch change in a thermochromic liquid crystal. We studied the pitch change in the liquid crystal, as a function of temperature, under various ...

The use of hydrogen peroxide as an oxidizing agent becomes increasingly important in chemistry. example vegetable oil epoxidation is excellent illustration the potential such agent. This reaction traditionally performed by Prileschajew oxidation, i.e., situ production percarboxylic acids. Drawbacks this approach are side reactions ring-opening and thermal runaway due to acid instability. One wa...