Role of water in the mechanism of the salt extraction to the organic solvent

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61388955%3A_____%2F19%3A00503738" target="_blank" >RIV/61388955:_____/19:00503738 - isvavai.cz</a>

Výsledek na webu

<a href="http://hdl.handle.net/11104/0295526" target="_blank" >http://hdl.handle.net/11104/0295526</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.electacta.2019.03.096" target="_blank" >10.1016/j.electacta.2019.03.096</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Role of water in the mechanism of the salt extraction to the organic solvent

Popis výsledku v původním jazyce

A two-electrode cell comprising a liquid/liquid interface is used to study the water clusters formation in the organic solvent phase following the extraction of tetraalkylammonium chloride (TAACl) from the aqueous phase. The change in the concentration of the common TAA+ ion on the aqueous side of the interface is monitored by the open circuit potential measurements. It is shown that the amount of TAACl extracted into the organic phase exceeds considerably the limit determined by the concentration of Cl− in the organic phase at a given interfacial potential difference and the electroneutrality condition. A mechanism is proposed including an accumulation of the excess TAACl in the water clusters formed from the hydration shell of the Cl− ions, water already dissolved in the organic phase, and additional water extracted from the aqueous phase. At higher concentration of TAACl in the aqueous phase this process leads to the formation of emulsion in the organic phase. Theoretical expressions describing the extraction of TAACl to the organic solvent phase are derived.

Název v anglickém jazyce

Role of water in the mechanism of the salt extraction to the organic solvent

Popis výsledku anglicky

A two-electrode cell comprising a liquid/liquid interface is used to study the water clusters formation in the organic solvent phase following the extraction of tetraalkylammonium chloride (TAACl) from the aqueous phase. The change in the concentration of the common TAA+ ion on the aqueous side of the interface is monitored by the open circuit potential measurements. It is shown that the amount of TAACl extracted into the organic phase exceeds considerably the limit determined by the concentration of Cl− in the organic phase at a given interfacial potential difference and the electroneutrality condition. A mechanism is proposed including an accumulation of the excess TAACl in the water clusters formed from the hydration shell of the Cl− ions, water already dissolved in the organic phase, and additional water extracted from the aqueous phase. At higher concentration of TAACl in the aqueous phase this process leads to the formation of emulsion in the organic phase. Theoretical expressions describing the extraction of TAACl to the organic solvent phase are derived.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10403 - Physical chemistry

Projekt

<a href="/cs/project/GA17-09980S" target="_blank" >GA17-09980S: Biomimetická elektrochemie emulzních mikrokapek na polarizovaném rozhraní dvou nemísitelných roztoků elektrolytů</a><br>

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2019

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

306

Číslo periodika v rámci svazku

MAY 2019

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

8

Strana od-do

541-548

Kód UT WoS článku

000464148700057

EID výsledku v databázi Scopus

2-s2.0-85063962802