Experimental Study on Ion Exchange Equilibria between Ilmenite Solid Solution (Fe2+,Mn2+,Mg)TiO3 and Aqueous (Fe2+,Mn2+,Mg)Cl2 Solution.

Removal of Copper from Aqueous Solution by Ion Exchange Resins

K-Na exchange equilibria between muscovite-paragonite solid solution and hydrothermal chloride solutions

Three ion exchange equilibrium isotherms between muscovite-paragonite solid solution and 2molal KCI-NaC1 aqueous solutions have been studied at (1) 420 ~ 1 kbar, (2) 420 ~ 2 kbar, and (3) 550 ~ 2 kbar. The AG ~ (Joules) + 2a of the ion exchange reaction are: AG ~ (1) = 17 259_+ 686, AG ~ (2) = 18 268 _ 560, AG ~ (3) = 16 018 _ 336. The excess mixing parameters ('subregular solution') of the sol...

DFT study on the interaction between monomeric aluminium and chloride ion in aqueous solution.

The interaction of monomeric aluminium and chloride ion in aqueous solution is investigated by density functional theory (DFT) calculations. The computational results show that it is difficult for Cl(-) to enter the inner-coordination shell of aluminium complexes by replacing the bound water molecules, independent of pH and the concentration of Cl(-). However, pH and the concentration of Cl(-) ...

Ion exchange growth of Zinc Sulfide quantum dots in aqueous solution

We report the growth by ion exchange synthesis of ZnS nanoparticles in MCM-41 matrices using Zn (CH3COO)2 and Na2S starting sources. The final product (ZnS/MCM-41) was characterized by X-ray diffraction (XRD) pattern, transmission electron microscopy (TEM), scanning electron microscopy (SEM), infrared spectrometry (IR) and UV-vis spectroscopy. Its crystalline st...

Ion exchange growth of Zinc Sulfide quantum dots in aqueous solution

We report the growth by ion exchange synthesis of ZnS nanoparticles in MCM-41 matrices using Zn (CH3COO)2 and Na2S starting sources. The final product (ZnS/MCM-41) was characterized by X-ray diffraction (XRD) pattern, transmission electron microscopy (TEM), scanning electron microscopy (SEM), infrared spectrometry (IR) and UV-vis spectroscopy. Its crystalline st...