Thermal and Volumetric Properties of Four Aqueous Aroma Compounds at Infinite Dilution

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60461373%3A22340%2F12%3A43893858" target="_blank" >RIV/60461373:22340/12:43893858 - isvavai.cz</a>

Výsledek na webu

<a href="http://dx.doi.org/10.1021/je300280s" target="_blank" >http://dx.doi.org/10.1021/je300280s</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1021/je300280s" target="_blank" >10.1021/je300280s</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Thermal and Volumetric Properties of Four Aqueous Aroma Compounds at Infinite Dilution

Popis výsledku v původním jazyce

Mixing enthalpies and densities of highly dilute aqueous solutions of four aroma compounds (propyl acetate, methyl butyrate, 2,3-butanedione, and cis-3-hexen-1-ol) were measured as a function of solution composition at several temperatures in the range from (288.15 to 318.15) K using a recently described tandem flow arrangement of isothermal mixing microcalorimeter and vibrating-tube densimeter. The dissolution of all the aroma compounds in water is strongly exothermic and accompanied with volume contraction. Based on the measured data, reliable values of infinite dilution partial molar excess enthalpy , partial molar volume , and partial molar excess volume of the studied solutes at infinite dilution in water were determined. Comparison to literaturedata is possible only for some of our results for esters and indicates excellent agreement. Thanks to high precision of our measurements, the temperature derivative properties, i.e. infinite dilution partial molar excess heat capacity and

Název v anglickém jazyce

Thermal and Volumetric Properties of Four Aqueous Aroma Compounds at Infinite Dilution

Popis výsledku anglicky

Mixing enthalpies and densities of highly dilute aqueous solutions of four aroma compounds (propyl acetate, methyl butyrate, 2,3-butanedione, and cis-3-hexen-1-ol) were measured as a function of solution composition at several temperatures in the range from (288.15 to 318.15) K using a recently described tandem flow arrangement of isothermal mixing microcalorimeter and vibrating-tube densimeter. The dissolution of all the aroma compounds in water is strongly exothermic and accompanied with volume contraction. Based on the measured data, reliable values of infinite dilution partial molar excess enthalpy , partial molar volume , and partial molar excess volume of the studied solutes at infinite dilution in water were determined. Comparison to literaturedata is possible only for some of our results for esters and indicates excellent agreement. Thanks to high precision of our measurements, the temperature derivative properties, i.e. infinite dilution partial molar excess heat capacity and

Druh

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

CEP obor

CF - Fyzikální chemie a teoretická chemie

OECD FORD obor

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Projekt

—

Návaznosti

Z - Vyzkumny zamer (s odkazem do CEZ)

Rok uplatnění

2012

Kód důvěrnosti údajů

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

Název periodika

Journal of Chemical Engineering Data

ISSN

0021-9568

e-ISSN

—

Svazek periodika

57

Číslo periodika v rámci svazku

6

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

7

Strana od-do

1822-1828

Kód UT WoS článku

000305356300025

EID výsledku v databázi Scopus

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