solITC: A rapid method to determine solubility products and heats of solution of hydrophobic ionic liquids from in situ synthesis in isothermal titration calorimeter

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60461373%3A22340%2F14%3A43897044" target="_blank" >RIV/60461373:22340/14:43897044 - isvavai.cz</a>

Výsledek na webu

<a href="http://www.sciencedirect.com/science/article/pii/S0021961414000640" target="_blank" >http://www.sciencedirect.com/science/article/pii/S0021961414000640</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.jct.2014.02.015" target="_blank" >10.1016/j.jct.2014.02.015</a>

Jazyk výsledku

angličtina

Název v původním jazyce

solITC: A rapid method to determine solubility products and heats of solution of hydrophobic ionic liquids from in situ synthesis in isothermal titration calorimeter

Popis výsledku v původním jazyce

This work presents a solubility isothermal titration calorimetry (solITC), a new calorimetric method that allows the determination of solubility product (Ksp) and heat of solution (DsolH) of hydrophobic ionic compound in water. Based on a single titration of dilute ionic solution into its counterionic solution the method consists of observing the abrupt change of the heat flow signal due to hydrophobic phase separation and fitting the integrated heats to exact thermodynamic model. A priori analysis shows that the applicability range spans for Ksp determination over five orders of magnitudes (typically 10^-9 { Ksp { 10^-4 for |DsolH| approx 30 kJ/mol) keeping at least 5% precision in both Ksp and DsolH values. For Ksp { 10^-10, only DsolH can be precisely determined. The method performance was validated on forming three different types of precipitate with different levels of solubility and heat of solution at T = 298.15 K. The new method is applied to explore 18 cation-anion combination

Název v anglickém jazyce

solITC: A rapid method to determine solubility products and heats of solution of hydrophobic ionic liquids from in situ synthesis in isothermal titration calorimeter

Popis výsledku anglicky

This work presents a solubility isothermal titration calorimetry (solITC), a new calorimetric method that allows the determination of solubility product (Ksp) and heat of solution (DsolH) of hydrophobic ionic compound in water. Based on a single titration of dilute ionic solution into its counterionic solution the method consists of observing the abrupt change of the heat flow signal due to hydrophobic phase separation and fitting the integrated heats to exact thermodynamic model. A priori analysis shows that the applicability range spans for Ksp determination over five orders of magnitudes (typically 10^-9 { Ksp { 10^-4 for |DsolH| approx 30 kJ/mol) keeping at least 5% precision in both Ksp and DsolH values. For Ksp { 10^-10, only DsolH can be precisely determined. The method performance was validated on forming three different types of precipitate with different levels of solubility and heat of solution at T = 298.15 K. The new method is applied to explore 18 cation-anion combination

Druh

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

CEP obor

BJ - Termodynamika

OECD FORD obor

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Projekt

—

Návaznosti

S - Specificky vyzkum na vysokych skolach

Rok uplatnění

2014

Kód důvěrnosti údajů

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

Název periodika

Journal of Chemical Thermodynamics

ISSN

0021-9614

e-ISSN

—

Svazek periodika

75

Číslo periodika v rámci svazku

Neuveden

Stát vydavatele periodika

NL - Nizozemsko

Počet stran výsledku

10

Strana od-do

86-95

Kód UT WoS článku

000336552000014

EID výsledku v databázi Scopus

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