INTERACTIONS OF HYDROPHOBIC LAYER SILICATES WITH ALCOHOL-BENZENE MIXTURES: II. STRUCTURE AND COMPOSITION OF THE ADSORPTION LAYER.

I. Dékány, F. Szanto, Armin Weiss, G. Lagaly

Research output: Contribution to journalArticle

64 Citations (Scopus)

Abstract

Adsorption of methanol and benzene on alkylammonium montmorillonite, a hydrophobic layer silicate, changes the orientation of the alkylammonium ions at the internal and external surfaces. The hydrophobic chains are pushed off from the surface and assume upright orientations. The methanol molecules are adsorbed preferentially on the silicate surface not covered by alkyl chains, the benzene molecules 'solvate' the alkyl chains. The volume of the adsorbed phase as calculated from the adsorption excess isotherms is smaller than the total interlayer volume occupied by the methanol and benzene molecules. Thus, only a fraction of the liquid between the silicate surfaces is subdued to the adsorption forces. The remaining liquid is considered bulk-like. The uptake of the bulk-like liquid in addition to the adsorption phase is apparently imperative for the process of swelling.

Original languageEnglish
Pages (from-to)427-431
Number of pages5
JournalBerichte der Bunsengesellschaft/Physical Chemistry Chemical Physics
Volume90
Issue number5
Publication statusPublished - May 1986

Fingerprint

Silicates
Benzene
Alcohols
Methanol
Adsorption
Chemical analysis
Molecules
Liquids
Bentonite
Clay minerals
Adsorption isotherms
Swelling
Ions

ASJC Scopus subject areas

  • Chemical Engineering(all)

Cite this

@article{ec60bc592d79484798ae0836872cb210,
title = "INTERACTIONS OF HYDROPHOBIC LAYER SILICATES WITH ALCOHOL-BENZENE MIXTURES: II. STRUCTURE AND COMPOSITION OF THE ADSORPTION LAYER.",
abstract = "Adsorption of methanol and benzene on alkylammonium montmorillonite, a hydrophobic layer silicate, changes the orientation of the alkylammonium ions at the internal and external surfaces. The hydrophobic chains are pushed off from the surface and assume upright orientations. The methanol molecules are adsorbed preferentially on the silicate surface not covered by alkyl chains, the benzene molecules 'solvate' the alkyl chains. The volume of the adsorbed phase as calculated from the adsorption excess isotherms is smaller than the total interlayer volume occupied by the methanol and benzene molecules. Thus, only a fraction of the liquid between the silicate surfaces is subdued to the adsorption forces. The remaining liquid is considered bulk-like. The uptake of the bulk-like liquid in addition to the adsorption phase is apparently imperative for the process of swelling.",
author = "I. D{\'e}k{\'a}ny and F. Szanto and Armin Weiss and G. Lagaly",
year = "1986",
month = "5",
language = "English",
volume = "90",
pages = "427--431",
journal = "Berichte der Bunsengesellschaft/Physical Chemistry Chemical Physics",
issn = "0005-9021",
publisher = "VCH Publishers",
number = "5",

}

TY - JOUR

T1 - INTERACTIONS OF HYDROPHOBIC LAYER SILICATES WITH ALCOHOL-BENZENE MIXTURES

T2 - II. STRUCTURE AND COMPOSITION OF THE ADSORPTION LAYER.

AU - Dékány, I.

AU - Szanto, F.

AU - Weiss, Armin

AU - Lagaly, G.

PY - 1986/5

Y1 - 1986/5

N2 - Adsorption of methanol and benzene on alkylammonium montmorillonite, a hydrophobic layer silicate, changes the orientation of the alkylammonium ions at the internal and external surfaces. The hydrophobic chains are pushed off from the surface and assume upright orientations. The methanol molecules are adsorbed preferentially on the silicate surface not covered by alkyl chains, the benzene molecules 'solvate' the alkyl chains. The volume of the adsorbed phase as calculated from the adsorption excess isotherms is smaller than the total interlayer volume occupied by the methanol and benzene molecules. Thus, only a fraction of the liquid between the silicate surfaces is subdued to the adsorption forces. The remaining liquid is considered bulk-like. The uptake of the bulk-like liquid in addition to the adsorption phase is apparently imperative for the process of swelling.

AB - Adsorption of methanol and benzene on alkylammonium montmorillonite, a hydrophobic layer silicate, changes the orientation of the alkylammonium ions at the internal and external surfaces. The hydrophobic chains are pushed off from the surface and assume upright orientations. The methanol molecules are adsorbed preferentially on the silicate surface not covered by alkyl chains, the benzene molecules 'solvate' the alkyl chains. The volume of the adsorbed phase as calculated from the adsorption excess isotherms is smaller than the total interlayer volume occupied by the methanol and benzene molecules. Thus, only a fraction of the liquid between the silicate surfaces is subdued to the adsorption forces. The remaining liquid is considered bulk-like. The uptake of the bulk-like liquid in addition to the adsorption phase is apparently imperative for the process of swelling.

UR - http://www.scopus.com/inward/record.url?scp=0022720983&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0022720983&partnerID=8YFLogxK

M3 - Article

AN - SCOPUS:0022720983

VL - 90

SP - 427

EP - 431

JO - Berichte der Bunsengesellschaft/Physical Chemistry Chemical Physics

JF - Berichte der Bunsengesellschaft/Physical Chemistry Chemical Physics

SN - 0005-9021

IS - 5

ER -