Vapor Pressures and Thermophysical Properties of Ethylene Carbonate, Propylene Carbonate, ?-Valerolactone, and ?-Butyrolactone

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60461373%3A22340%2F17%3A43913348" target="_blank" >RIV/60461373:22340/17:43913348 - isvavai.cz</a>

Výsledek na webu

<a href="http://pubs.acs.org/doi/abs/10.1021/acs.jced.7b00578" target="_blank" >http://pubs.acs.org/doi/abs/10.1021/acs.jced.7b00578</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1021/acs.jced.7b00578" target="_blank" >10.1021/acs.jced.7b00578</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Vapor Pressures and Thermophysical Properties of Ethylene Carbonate, Propylene Carbonate, ?-Valerolactone, and ?-Butyrolactone

Popis výsledku v původním jazyce

In this work, a thermodynamic study of four important industrial solvents, ethylene carbonate (CAS RN: 96-49-1), propylene carbonate (CAS RN: 108-32-7), ?-valerolactone (CAS RN: 108-29-2), and ?-butyrolactone (CAS RN: 96-48-0), is presented. The vapor pressure measurements were performed by static method using two apparatuses in a combined temperature interval (238?363) K. Heat capacities of condensed phases were measured by Tian?Calvet calorimetry in the temperature interval (262?358) K. The phase behavior of ethylene carbonate and ?-valerolactone was investigated by a heat-flux DSC from 183?303 and 328 K, respectively. Ideal-gas thermodynamic properties were calculated using the methods of statistical thermodynamics based on calculated fundamental vibrational frequencies and molecular structure data. A consistent thermodynamic description of all involved properties (calculated ideal-gas heat capacities and experimental data on vapor pressures, condensed phase heat capacities, and vaporization enthalpies) was achieved by their simultaneous correlation.

Název v anglickém jazyce

Vapor Pressures and Thermophysical Properties of Ethylene Carbonate, Propylene Carbonate, ?-Valerolactone, and ?-Butyrolactone

Popis výsledku anglicky

In this work, a thermodynamic study of four important industrial solvents, ethylene carbonate (CAS RN: 96-49-1), propylene carbonate (CAS RN: 108-32-7), ?-valerolactone (CAS RN: 108-29-2), and ?-butyrolactone (CAS RN: 96-48-0), is presented. The vapor pressure measurements were performed by static method using two apparatuses in a combined temperature interval (238?363) K. Heat capacities of condensed phases were measured by Tian?Calvet calorimetry in the temperature interval (262?358) K. The phase behavior of ethylene carbonate and ?-valerolactone was investigated by a heat-flux DSC from 183?303 and 328 K, respectively. Ideal-gas thermodynamic properties were calculated using the methods of statistical thermodynamics based on calculated fundamental vibrational frequencies and molecular structure data. A consistent thermodynamic description of all involved properties (calculated ideal-gas heat capacities and experimental data on vapor pressures, condensed phase heat capacities, and vaporization enthalpies) was achieved by their simultaneous correlation.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10403 - Physical chemistry

Projekt

<a href="/cs/project/GA17-03875S" target="_blank" >GA17-03875S: Teoretická a experimentální studie termodynamických vlastností a fázového chování molekulárních krystalů</a><br>

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2017

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

62

Číslo periodika v rámci svazku

12

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

13

Strana od-do

4174-4186

Kód UT WoS článku

000418393800014

EID výsledku v databázi Scopus

2-s2.0-85038414495