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Density Measurements of CO2-Expanded Liquids

Cunico, Larissa P. LU and Turner, Charlotta LU (2017) In Journal of Chemical and Engineering Data 62(10). p.3525-3533
Abstract

Novel experimental data of density for mixtures containing CO2 + ethanol, CO2 + ethyl lactate, CO2 + glycerol + ethanol, and CO2 + glycerol + ethyl lactate at low/moderate temperatures (308 and 323 K), pressures between 5 and 30 MPa, and high amounts of the organic solvent (molar fraction x = 0.5-0.9) are presented. The chosen organic solvents (ethanol, ethyl lactate, and glycerol) are green and applicable in food industry and present different polarizabilities. The density of CO2 + ethanol increased with the increment in the molar fraction of CO2, and the opposite was observed for the mixtures of CO2 + ethyl lactate. By adding a small amount of glycerol to the... (More)

Novel experimental data of density for mixtures containing CO2 + ethanol, CO2 + ethyl lactate, CO2 + glycerol + ethanol, and CO2 + glycerol + ethyl lactate at low/moderate temperatures (308 and 323 K), pressures between 5 and 30 MPa, and high amounts of the organic solvent (molar fraction x = 0.5-0.9) are presented. The chosen organic solvents (ethanol, ethyl lactate, and glycerol) are green and applicable in food industry and present different polarizabilities. The density of CO2 + ethanol increased with the increment in the molar fraction of CO2, and the opposite was observed for the mixtures of CO2 + ethyl lactate. By adding a small amount of glycerol to the mixture of CO2 + ethanol and CO2 + ethyl lactate, it was possible to increase the density even a little further. The experimental data of density were well-correlated using the Peng-Robinson equation of state (PR-EOS) combined with Péneloux volume translation.

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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Journal of Chemical and Engineering Data
volume
62
issue
10
pages
9 pages
publisher
The American Chemical Society
external identifiers
  • scopus:85028997375
  • wos:000413131800054
ISSN
0021-9568
DOI
10.1021/acs.jced.7b00540
language
English
LU publication?
yes
id
810ca662-e33c-4535-94a8-e6bbfa2aff2a
date added to LUP
2017-11-28 08:00:26
date last changed
2018-01-16 13:26:33
@article{810ca662-e33c-4535-94a8-e6bbfa2aff2a,
  abstract     = {<p>Novel experimental data of density for mixtures containing CO<sub>2</sub> + ethanol, CO<sub>2</sub> + ethyl lactate, CO<sub>2</sub> + glycerol + ethanol, and CO<sub>2</sub> + glycerol + ethyl lactate at low/moderate temperatures (308 and 323 K), pressures between 5 and 30 MPa, and high amounts of the organic solvent (molar fraction x = 0.5-0.9) are presented. The chosen organic solvents (ethanol, ethyl lactate, and glycerol) are green and applicable in food industry and present different polarizabilities. The density of CO<sub>2</sub> + ethanol increased with the increment in the molar fraction of CO<sub>2</sub>, and the opposite was observed for the mixtures of CO<sub>2</sub> + ethyl lactate. By adding a small amount of glycerol to the mixture of CO<sub>2</sub> + ethanol and CO<sub>2</sub> + ethyl lactate, it was possible to increase the density even a little further. The experimental data of density were well-correlated using the Peng-Robinson equation of state (PR-EOS) combined with Péneloux volume translation.</p>},
  author       = {Cunico, Larissa P. and Turner, Charlotta},
  issn         = {0021-9568},
  language     = {eng},
  month        = {10},
  number       = {10},
  pages        = {3525--3533},
  publisher    = {The American Chemical Society},
  series       = {Journal of Chemical and Engineering Data},
  title        = {Density Measurements of CO<sub>2</sub>-Expanded Liquids},
  url          = {http://dx.doi.org/10.1021/acs.jced.7b00540},
  volume       = {62},
  year         = {2017},
}