Transfer of counterions and diffusion of electrolyte in inorganic membranes modified by ion exchanger nanoparticles

Autor:	N. V. Stefanyak, S. V. Vasilyuk, Yu. S. Dzyazko
Rok vydání:	2010
Předmět:	chemistry.chemical_classification Ion exchange Zirconium dioxide Diffusion Inorganic chemistry Nanoparticle General Chemistry Electrolyte Dielectric spectroscopy chemistry.chemical_compound Membrane chemistry Counterion Water Science and Technology
Zdroj:	Journal of Water Chemistry and Technology. 32:145-153
ISSN:	1934-936X 1063-455X
DOI:	10.3103/s1063455x10030033
Popis:	Using the method of impedance spectroscopy we have investigated charge selectivity of macroporous inorganic membranes modified with nanoparticles of the inorganic ion exchanger—hydrated zirconium dioxide, which displays anion-exchange properties in an acid area. It has been found that transfer numbers of the SO42− reach 0.81–0.9 at the H2SO4 concentration 10 mol · m−3 and decrease as the acid concentration in solution goes down. It has also been found that modified membranes demonstrate a two-fold decrease of the diffusion coefficient of H2SO4 compared with a free solution. It has been shown that charge selectivity of the membrane improves as the amount of the ion exchanger in the matrix increases.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::bab56ed1415d016bb50609abd538e9d5 https://doi.org/10.3103/s1063455x10030033 Zobrazit plný text záznamu Full text from SpringerLink