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Title: Effects of dilution of poly(ethylvinylbenzene-divinylbenzene) adsorbent on the adsorption of aliphatic, alicyclic, and aromatic hydrocarbon adsorbates from effective zero to finite surface coverage

Abstract

The chromatographic measurement and systematic interpretation of the solidgas partition coefficients K/sub s/ and related thermodynamic properties of a number of hydrocarbon adsorbates (n-pentane through n-octane, cyclohexane, methylcyclohexane, benzene, dichloromethane, chloroform, carbon tetrachloride, tetrahydrofuran, thiophene, and acetone) at effective zero surface coverage with a 1:10 admixture of the title adsorbent-inert diluent from 393 to 443 K are reported. Despite a difference of an order of magnitude in the surface areas of bulk and admixed packings, the adsorbate relative retentions were in good agreement with those found in previous work with neat Porapak Q. The heats of adsorption also coincided to within an experimental error of ca. +- 5%. The GSC technique of elution by characteristic point was then used to derive the finite-concentration adsorption isotherms and isosteric heats of adsorption on n-hexane, cyclohexane, benzene, carbon tetrachloride, and acetone adsorbates with diluted Porapak Q over the temperature range 393-433 K. All exhibited BET Type IV isotherms, as well as changes in the respective isotherm temperature coefficients. The latter is said to be a consequence of the microporous substructure of this adsorbent.

Authors:
;
Publication Date:
Research Org.:
San Diego State Univ., CA (USA)
OSTI Identifier:
7149092
Resource Type:
Journal Article
Journal Name:
Anal. Chem.; (United States)
Additional Journal Information:
Journal Volume: 60:2
Country of Publication:
United States
Language:
English
Subject:
37 INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY; ACETONE; ADSORPTION; GAS CHROMATOGRAPHY; THERMODYNAMIC PROPERTIES; ALKANES; BENZENE; SORPTIVE PROPERTIES; CARBON TETRACHLORIDE; CHLOROFORM; CYCLOALKANES; TETRAHYDROFURAN; THIOPHENE; VINYL MONOMERS; EXPERIMENTAL DATA; HIGH TEMPERATURE; MEDIUM TEMPERATURE; POLYMERS; QUANTITATIVE CHEMICAL ANALYSIS; SPATIAL DISTRIBUTION; THERMODYNAMICS; AROMATICS; CHEMICAL ANALYSIS; CHLORINATED ALIPHATIC HYDROCARBONS; CHROMATOGRAPHY; DATA; DISTRIBUTION; FURANS; HALOGENATED ALIPHATIC HYDROCARBONS; HETEROCYCLIC COMPOUNDS; HYDROCARBONS; INFORMATION; KETONES; MONOMERS; NUMERICAL DATA; ORGANIC CHLORINE COMPOUNDS; ORGANIC COMPOUNDS; ORGANIC HALOGEN COMPOUNDS; ORGANIC OXYGEN COMPOUNDS; ORGANIC SULFUR COMPOUNDS; PHYSICAL PROPERTIES; SEPARATION PROCESSES; SORPTION; SURFACE PROPERTIES; 400102* - Chemical & Spectral Procedures; 400201 - Chemical & Physicochemical Properties

Citation Formats

Djordjevic, N M, and Laub, R J. Effects of dilution of poly(ethylvinylbenzene-divinylbenzene) adsorbent on the adsorption of aliphatic, alicyclic, and aromatic hydrocarbon adsorbates from effective zero to finite surface coverage. United States: N. p., 1988. Web. doi:10.1021/ac00153a006.
Djordjevic, N M, & Laub, R J. Effects of dilution of poly(ethylvinylbenzene-divinylbenzene) adsorbent on the adsorption of aliphatic, alicyclic, and aromatic hydrocarbon adsorbates from effective zero to finite surface coverage. United States. https://doi.org/10.1021/ac00153a006
Djordjevic, N M, and Laub, R J. 1988. "Effects of dilution of poly(ethylvinylbenzene-divinylbenzene) adsorbent on the adsorption of aliphatic, alicyclic, and aromatic hydrocarbon adsorbates from effective zero to finite surface coverage". United States. https://doi.org/10.1021/ac00153a006.
@article{osti_7149092,
title = {Effects of dilution of poly(ethylvinylbenzene-divinylbenzene) adsorbent on the adsorption of aliphatic, alicyclic, and aromatic hydrocarbon adsorbates from effective zero to finite surface coverage},
author = {Djordjevic, N M and Laub, R J},
abstractNote = {The chromatographic measurement and systematic interpretation of the solidgas partition coefficients K/sub s/ and related thermodynamic properties of a number of hydrocarbon adsorbates (n-pentane through n-octane, cyclohexane, methylcyclohexane, benzene, dichloromethane, chloroform, carbon tetrachloride, tetrahydrofuran, thiophene, and acetone) at effective zero surface coverage with a 1:10 admixture of the title adsorbent-inert diluent from 393 to 443 K are reported. Despite a difference of an order of magnitude in the surface areas of bulk and admixed packings, the adsorbate relative retentions were in good agreement with those found in previous work with neat Porapak Q. The heats of adsorption also coincided to within an experimental error of ca. +- 5%. The GSC technique of elution by characteristic point was then used to derive the finite-concentration adsorption isotherms and isosteric heats of adsorption on n-hexane, cyclohexane, benzene, carbon tetrachloride, and acetone adsorbates with diluted Porapak Q over the temperature range 393-433 K. All exhibited BET Type IV isotherms, as well as changes in the respective isotherm temperature coefficients. The latter is said to be a consequence of the microporous substructure of this adsorbent.},
doi = {10.1021/ac00153a006},
url = {https://www.osti.gov/biblio/7149092}, journal = {Anal. Chem.; (United States)},
number = ,
volume = 60:2,
place = {United States},
year = {Fri Jan 15 00:00:00 EST 1988},
month = {Fri Jan 15 00:00:00 EST 1988}
}