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Title: Vapor-liquid equilibrium and density measurements of tetraalklylammonium bromide + propanol + water systems

Abstract

Isobaric vapor-liquid equilibrium (VLE) measurements at atmospheric pressure were made for 1.0--3.0 m tetrapropylammonium bromide (TPAB) and 3.0 m tetrabutylammonium bromide (TBAB) in mixtures of 2-propanol and water, and 3.0 m TPAB and 3.0 m TBAB in mixtures of 1-propanol and water. In addition, VLE measurements were made on 3.0 m TBAB in 2-propanol + water mixtures at 0.080 bar. The effects of the salt on the VLE in each system were assessed via relative volatilities. The effect of the solute was to salt-out at high alcohol concentrations and salt-in at low alcohol concentrations. A vibrating-tube decimeter was used to obtain solution densities at 25 C from 0.1 to 4 m TBAB or TPAB in the pure solvent and in aqueous 1-propanol and 2-propanol solutions. Variations of the apparent molar volumes with salt molality in the mixed solvent differed markedly from those of the alcohol-free binary, while subtle distinctions were seen among the various salt and alcohol molecular structures.

Authors:
;  [1]; ; ;  [2]
  1. Univ. of Tennessee, Knoxville, TN (United States). Dept. of Chemical Engineering
  2. Univ. of Virginia, Charlottesville, VA (United States). Dept. of Chemical Engineering
Publication Date:
Sponsoring Org.:
USDOE
OSTI Identifier:
103954
Report Number(s):
CONF-941128-
Journal ID: JCEAAX; ISSN 0021-9568; TRN: IM9541%%394
Resource Type:
Journal Article
Journal Name:
Journal of Chemical and Engineering Data
Additional Journal Information:
Journal Volume: 40; Journal Issue: 4; Conference: Annual meeting of the American Institute of Chemical Engineers, San Francisco, CA (United States), 13-18 Nov 1994; Other Information: PBD: Jul-Aug 1995
Country of Publication:
United States
Language:
English
Subject:
40 CHEMISTRY; AMMONIUM HALIDES; DENSITY; THERMODYNAMIC PROPERTIES; PROPANOLS; ORGANIC BROMINE COMPOUNDS; AQUEOUS SOLUTIONS; ORGANIC SOLVENTS; ELECTROLYTES; DISTILLATION; VOLATILITY

Citation Formats

Slusher, J T, Cummings, P T, Hu, Y, Vega, C A, and O`Connell, J P. Vapor-liquid equilibrium and density measurements of tetraalklylammonium bromide + propanol + water systems. United States: N. p., 1995. Web. doi:10.1021/je00020a012.
Slusher, J T, Cummings, P T, Hu, Y, Vega, C A, & O`Connell, J P. Vapor-liquid equilibrium and density measurements of tetraalklylammonium bromide + propanol + water systems. United States. https://doi.org/10.1021/je00020a012
Slusher, J T, Cummings, P T, Hu, Y, Vega, C A, and O`Connell, J P. 1995. "Vapor-liquid equilibrium and density measurements of tetraalklylammonium bromide + propanol + water systems". United States. https://doi.org/10.1021/je00020a012.
@article{osti_103954,
title = {Vapor-liquid equilibrium and density measurements of tetraalklylammonium bromide + propanol + water systems},
author = {Slusher, J T and Cummings, P T and Hu, Y and Vega, C A and O`Connell, J P},
abstractNote = {Isobaric vapor-liquid equilibrium (VLE) measurements at atmospheric pressure were made for 1.0--3.0 m tetrapropylammonium bromide (TPAB) and 3.0 m tetrabutylammonium bromide (TBAB) in mixtures of 2-propanol and water, and 3.0 m TPAB and 3.0 m TBAB in mixtures of 1-propanol and water. In addition, VLE measurements were made on 3.0 m TBAB in 2-propanol + water mixtures at 0.080 bar. The effects of the salt on the VLE in each system were assessed via relative volatilities. The effect of the solute was to salt-out at high alcohol concentrations and salt-in at low alcohol concentrations. A vibrating-tube decimeter was used to obtain solution densities at 25 C from 0.1 to 4 m TBAB or TPAB in the pure solvent and in aqueous 1-propanol and 2-propanol solutions. Variations of the apparent molar volumes with salt molality in the mixed solvent differed markedly from those of the alcohol-free binary, while subtle distinctions were seen among the various salt and alcohol molecular structures.},
doi = {10.1021/je00020a012},
url = {https://www.osti.gov/biblio/103954}, journal = {Journal of Chemical and Engineering Data},
number = 4,
volume = 40,
place = {United States},
year = {Sat Jul 01 00:00:00 EDT 1995},
month = {Sat Jul 01 00:00:00 EDT 1995}
}