Temperature effect in the ion transfer kinetics at the micro-interface between two immiscible electrolyte solutions

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61388955%3A_____%2F15%3A00447051" target="_blank" >RIV/61388955:_____/15:00447051 - isvavai.cz</a>

Výsledek na webu

<a href="http://dx.doi.org/10.1016/j.electacta.2015.08.110" target="_blank" >http://dx.doi.org/10.1016/j.electacta.2015.08.110</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.electacta.2015.08.110" target="_blank" >10.1016/j.electacta.2015.08.110</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Temperature effect in the ion transfer kinetics at the micro-interface between two immiscible electrolyte solutions

Popis výsledku v původním jazyce

Electrochemical impedance spectroscopy (EIS) was used to investigate the kinetics of the tetraethylammonium (TEA+) ion transfer across the water/1,2-dichloroethane (DCE) interface supported at the tip of a thick-wall microcapillary at various temperatures. EIS measurements were carried out at the equilibrium Galvani potential difference, which was controlled by the partition of TEA+ present in both the aqueous and DCE phase. The apparent standard rate constant k0 of the TEA+ ion transfer and the diffusion coefficient Dw of TEA+ in the aqueous phase were determined at five temperature values in the range 15?35 °C. The values k0 = 0.470.12 at 20 °C and k0 = 0.520.17 cm s1 at 25 °C agree well with those obtained by EIS and noise analysis under the same orsimilar experimental conditions in our previous studies. Comparable effects of temperature on k0 and Dw, as indicated by nearly equal slopes of the plots of log k0 and log Dw vs. the reciprocal absolute temperature, point to the absence

Název v anglickém jazyce

Temperature effect in the ion transfer kinetics at the micro-interface between two immiscible electrolyte solutions

Popis výsledku anglicky

Electrochemical impedance spectroscopy (EIS) was used to investigate the kinetics of the tetraethylammonium (TEA+) ion transfer across the water/1,2-dichloroethane (DCE) interface supported at the tip of a thick-wall microcapillary at various temperatures. EIS measurements were carried out at the equilibrium Galvani potential difference, which was controlled by the partition of TEA+ present in both the aqueous and DCE phase. The apparent standard rate constant k0 of the TEA+ ion transfer and the diffusion coefficient Dw of TEA+ in the aqueous phase were determined at five temperature values in the range 15?35 °C. The values k0 = 0.470.12 at 20 °C and k0 = 0.520.17 cm s1 at 25 °C agree well with those obtained by EIS and noise analysis under the same orsimilar experimental conditions in our previous studies. Comparable effects of temperature on k0 and Dw, as indicated by nearly equal slopes of the plots of log k0 and log Dw vs. the reciprocal absolute temperature, point to the absence

Druh

J_x - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

CEP obor

CG - Elektrochemie

OECD FORD obor

—

Projekt

<a href="/cs/project/GA13-04630S" target="_blank" >GA13-04630S: Vývoj spolehlivého přístupu k měření rychlostí přenosu iontů přes rozhraní nemísitelných kapalin (ITIES)</a><br>

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2015

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Electrochimica acta

ISSN

0013-4686

e-ISSN

—

Svazek periodika

180

Číslo periodika v rámci svazku

OCT 2015

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

7

Strana od-do

366-372

Kód UT WoS článku

000363345100044

EID výsledku v databázi Scopus

2-s2.0-84940737814