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Title: Experimental density measurements of bis(2-ethylhexyl) phthalate at elevated temperatures and pressures

Abstract

Experimental high-temperature, high-pressure (HTHP) density data for bis(2-ethylhexyl) phthalate (DEHP) are reported in this study. DEHP is a popular choice as a reference fluid for viscosity calibrations in the HTHP region. However, reliable HTHP density values are needed for accurate viscosity calculations for certain viscometers (e.g. rolling ball). HTHP densities are determined at T = (373, 424, 476, 492, and 524) K and P to 270 MPa using a variable-volume, high-pressure view cell. The experimental density data are satisfactorily correlated by the modified Tait equation with a mean absolute percent deviation (δ) of 0.15. The experimental data are modeled with the Peng–Robinson (PREoS), volume-translated PREoS (VT-PREoS), and perturbed chain statistical associating fluid theory (PC-SAFT EoS) models. The required parameters for the two PREoS and the PC-SAFT EoS models are determined using group contribution methods. The PC-SAFT EoS performs the best of the three models with a δ of 2.12. The PC-SAFT EoS is also fit to the experimental data to obtain a new set of pure component parameters that yield a δ of 0.20 for these HTHP conditions.

Authors:
; ; ; ;
Publication Date:
Research Org.:
National Energy Technology Lab. (NETL), Pittsburgh, PA, and Morgantown, WV (United States). In-house Research
Sponsoring Org.:
USDOE Office of Fossil Energy (FE)
OSTI Identifier:
1129847
Report Number(s):
A-UNIV-PUB-048
DOE Contract Number:  
DE-FE0004000
Resource Type:
Journal Article
Resource Relation:
Journal Name: JOURNAL OF CHEMICAL THERMODYNAMICS; Journal Volume: 63
Country of Publication:
United States
Language:
English
Subject:
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY; high pressure, density viscous fluid, calibration, Phthalate; High pressure; Density; Peng–Robinson; PC-SAFT

Citation Formats

Bamgbade, Babatunde A, Wu, Yue, Baled, Hseen O, Enick, Robert M, and Burgess, Ward A. Experimental density measurements of bis(2-ethylhexyl) phthalate at elevated temperatures and pressures. United States: N. p., 2013. Web. doi:10.1016/j.jct.2013.04.010.
Bamgbade, Babatunde A, Wu, Yue, Baled, Hseen O, Enick, Robert M, & Burgess, Ward A. Experimental density measurements of bis(2-ethylhexyl) phthalate at elevated temperatures and pressures. United States. doi:10.1016/j.jct.2013.04.010.
Bamgbade, Babatunde A, Wu, Yue, Baled, Hseen O, Enick, Robert M, and Burgess, Ward A. Thu . "Experimental density measurements of bis(2-ethylhexyl) phthalate at elevated temperatures and pressures". United States. doi:10.1016/j.jct.2013.04.010.
@article{osti_1129847,
title = {Experimental density measurements of bis(2-ethylhexyl) phthalate at elevated temperatures and pressures},
author = {Bamgbade, Babatunde A and Wu, Yue and Baled, Hseen O and Enick, Robert M and Burgess, Ward A},
abstractNote = {Experimental high-temperature, high-pressure (HTHP) density data for bis(2-ethylhexyl) phthalate (DEHP) are reported in this study. DEHP is a popular choice as a reference fluid for viscosity calibrations in the HTHP region. However, reliable HTHP density values are needed for accurate viscosity calculations for certain viscometers (e.g. rolling ball). HTHP densities are determined at T = (373, 424, 476, 492, and 524) K and P to 270 MPa using a variable-volume, high-pressure view cell. The experimental density data are satisfactorily correlated by the modified Tait equation with a mean absolute percent deviation (δ) of 0.15. The experimental data are modeled with the Peng–Robinson (PREoS), volume-translated PREoS (VT-PREoS), and perturbed chain statistical associating fluid theory (PC-SAFT EoS) models. The required parameters for the two PREoS and the PC-SAFT EoS models are determined using group contribution methods. The PC-SAFT EoS performs the best of the three models with a δ of 2.12. The PC-SAFT EoS is also fit to the experimental data to obtain a new set of pure component parameters that yield a δ of 0.20 for these HTHP conditions.},
doi = {10.1016/j.jct.2013.04.010},
journal = {JOURNAL OF CHEMICAL THERMODYNAMICS},
number = ,
volume = 63,
place = {United States},
year = {Thu Aug 01 00:00:00 EDT 2013},
month = {Thu Aug 01 00:00:00 EDT 2013}
}