Complexation of metal ions in brines: application of electronic spectroscopy in the study of the Cu(II)-LiCl-H 2 O system between 25 and 90°C

Selective decomposition of cyclohexyl hydroperoxide by copper ion-containing quaternary ammonium salts in alkali-free medium

“…It has been reported that these bands are characteristic absorption of the inorganic sheets of corner-sharing copper chloride octahedral sandwiched with organic layers. [19][20][21][22] This indicated that copper chloride was introduced to hexadecyl trimethyl ammonium chloride (HTAC) via the formation of four-coordinated CuCl 4 2− complex.…”

Preparation of copper (II) ion-containing bisimidazolium ionic liquid bridged periodic mesoporous organosilica and the catalytic decomposition of cyclohexyl hydroperoxide

“…1b). The 29 Si MAS NMR spectrum of the BIM-PMO confirmed the presence of covalent linkage of the ionic liquid moieties to the silica framework. Thermal gravimetric analysis (TGA) was also carried out to study the thermal stability of BIM-PMO (Fig.…”

“…Both the samples show absorption bands at 220 nm, which was ascribed to imidazolium cation. Besides this band, for Cu-BIM-PMO it shows two other peaks at 290 and 400 nm, which were assigned to the CuCl 4 2− species [19,24,29]. It could be deduced that the copper ion was introduced to the materials via the formation of CuCl 4 2− complex.…”

Phase Equilibrium of Ternary System Cd2+, K+//Cl–-H2O at 298 K

“…It's very useful for predicting the adsorption to carrying out the experiments of simulating the ions in soil solution 6,7 . The mobility of heavy metals mainly depends on their complexing with other ions 8 . Then the speciation, dissolution and desorption of cadmium compounds under natural conditions could be studied to predict their biological activities.…”