Measurement of infinite dilution activity coefficients using high performance liquid chromatography

Ioannis Economou, P. Vimalchand, Marc D. Donohue

Research output: Contribution to journalArticle

4 Citations (Scopus)

Abstract

Economou, I.G., Vimalchand, P. and Donohue, M.D., 1991. Measurement of infinite dilution activity coefficients using high performance liquid chromatography. Fluid Phase Equilibria, 68: 131-149. High performance liquid chromatography (HPLC) was used to measure the distribution of several solutes between a stationary phase and a mobile phase. In all cases, the stationary phase was octadecane bonded to μPORASIL packing material. Mobile phases were aqueous solutions of methanol, ethanol, acetonitrile and isopropanol at several compositions. Solutes were benzene, toluene, p-xylene and cumene. These solutes show good partitioning between the two phases and are easily detected with a UV detector. Ratios of infinite dilution activity coefficients, γ, of these solutes in the mobile phases were then determined from the capacity factor k'. Values for the activity coefficients themselves can be obtained from these ratios if one absolute value is available. Our results compare well with values of γ for the same systems obtained from the literature. Limitations of the method are discussed. Finally, experimental results are compared with predictions from UNIFAC, NRTL and APACT.

Original languageEnglish
Pages (from-to)131-149
Number of pages19
JournalFluid Phase Equilibria
Volume68
Issue numberC
DOIs
Publication statusPublished - 30 Nov 1991
Externally publishedYes

Fingerprint

Activity coefficients
liquid chromatography
High performance liquid chromatography
Dilution
dilution
solutes
coefficients
Ultraviolet detectors
2-Propanol
Toluene
Xylene
Benzene
Acetonitrile
Phase equilibria
Methanol
xylene
Ethanol
acetonitrile
toluene
ethyl alcohol

ASJC Scopus subject areas

  • Fluid Flow and Transfer Processes
  • Physical and Theoretical Chemistry

Cite this

Measurement of infinite dilution activity coefficients using high performance liquid chromatography. / Economou, Ioannis; Vimalchand, P.; Donohue, Marc D.

In: Fluid Phase Equilibria, Vol. 68, No. C, 30.11.1991, p. 131-149.

Research output: Contribution to journalArticle

@article{8dc77eccd7b54108b757c714a23fd4e6,
title = "Measurement of infinite dilution activity coefficients using high performance liquid chromatography",
abstract = "Economou, I.G., Vimalchand, P. and Donohue, M.D., 1991. Measurement of infinite dilution activity coefficients using high performance liquid chromatography. Fluid Phase Equilibria, 68: 131-149. High performance liquid chromatography (HPLC) was used to measure the distribution of several solutes between a stationary phase and a mobile phase. In all cases, the stationary phase was octadecane bonded to μPORASIL packing material. Mobile phases were aqueous solutions of methanol, ethanol, acetonitrile and isopropanol at several compositions. Solutes were benzene, toluene, p-xylene and cumene. These solutes show good partitioning between the two phases and are easily detected with a UV detector. Ratios of infinite dilution activity coefficients, γ∞, of these solutes in the mobile phases were then determined from the capacity factor k'. Values for the activity coefficients themselves can be obtained from these ratios if one absolute value is available. Our results compare well with values of γ∞ for the same systems obtained from the literature. Limitations of the method are discussed. Finally, experimental results are compared with predictions from UNIFAC, NRTL and APACT.",
author = "Ioannis Economou and P. Vimalchand and Donohue, {Marc D.}",
year = "1991",
month = "11",
day = "30",
doi = "10.1016/0378-3812(91)85013-K",
language = "English",
volume = "68",
pages = "131--149",
journal = "Fluid Phase Equilibria",
issn = "0378-3812",
publisher = "Elsevier",
number = "C",

}

TY - JOUR

T1 - Measurement of infinite dilution activity coefficients using high performance liquid chromatography

AU - Economou, Ioannis

AU - Vimalchand, P.

AU - Donohue, Marc D.

PY - 1991/11/30

Y1 - 1991/11/30

N2 - Economou, I.G., Vimalchand, P. and Donohue, M.D., 1991. Measurement of infinite dilution activity coefficients using high performance liquid chromatography. Fluid Phase Equilibria, 68: 131-149. High performance liquid chromatography (HPLC) was used to measure the distribution of several solutes between a stationary phase and a mobile phase. In all cases, the stationary phase was octadecane bonded to μPORASIL packing material. Mobile phases were aqueous solutions of methanol, ethanol, acetonitrile and isopropanol at several compositions. Solutes were benzene, toluene, p-xylene and cumene. These solutes show good partitioning between the two phases and are easily detected with a UV detector. Ratios of infinite dilution activity coefficients, γ∞, of these solutes in the mobile phases were then determined from the capacity factor k'. Values for the activity coefficients themselves can be obtained from these ratios if one absolute value is available. Our results compare well with values of γ∞ for the same systems obtained from the literature. Limitations of the method are discussed. Finally, experimental results are compared with predictions from UNIFAC, NRTL and APACT.

AB - Economou, I.G., Vimalchand, P. and Donohue, M.D., 1991. Measurement of infinite dilution activity coefficients using high performance liquid chromatography. Fluid Phase Equilibria, 68: 131-149. High performance liquid chromatography (HPLC) was used to measure the distribution of several solutes between a stationary phase and a mobile phase. In all cases, the stationary phase was octadecane bonded to μPORASIL packing material. Mobile phases were aqueous solutions of methanol, ethanol, acetonitrile and isopropanol at several compositions. Solutes were benzene, toluene, p-xylene and cumene. These solutes show good partitioning between the two phases and are easily detected with a UV detector. Ratios of infinite dilution activity coefficients, γ∞, of these solutes in the mobile phases were then determined from the capacity factor k'. Values for the activity coefficients themselves can be obtained from these ratios if one absolute value is available. Our results compare well with values of γ∞ for the same systems obtained from the literature. Limitations of the method are discussed. Finally, experimental results are compared with predictions from UNIFAC, NRTL and APACT.

UR - http://www.scopus.com/inward/record.url?scp=0026254479&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0026254479&partnerID=8YFLogxK

U2 - 10.1016/0378-3812(91)85013-K

DO - 10.1016/0378-3812(91)85013-K

M3 - Article

VL - 68

SP - 131

EP - 149

JO - Fluid Phase Equilibria

JF - Fluid Phase Equilibria

SN - 0378-3812

IS - C

ER -