Adsorption of Aliphatic Alcohols, Alkanoic Acids and Acetone on the Silica Surface: Chemical and Steric Factors of Monolayer Formation; Apparent Fractal Dimension Full article
| Conference |
11th International Conference on the Chemistry of the Organic Solid State 04-09 Jul 1993 , RAMAT RACHEL |
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| Journal |
Molecular Crystals and Liquid Crystals Science and Technology. Section A. Molecular Crystals and Liquid Crystals ( (1992 - 2001)
ISSN: 1058-725X |
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| Output data | Year: 1994, Volume: 248, Pages: 159-171 Pages count : 13 DOI: 10.1080/10587259408027177 | ||
| Tags | Acetone; Adsorption; Adsorption isotherms; Alcohols; Fractals; Infrared spectroscopy; Organic acids; Porous materials; Silica gel; Surface properties | ||
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Abstract:
In this communication we made a detailed and critical analysis of the factors which may lead to mistakes in measuring the number of molecules in monolayer on the surface of different silica gels, when using aliphatic alcohols, alkanoic acids and acetone as adsorbates. The chemical factor is due to the complex interaction of alcohol (acid) molecules with the surface hydroxy groups of different reactivity. This results in a two-steped form of adsorption isotherms studied by IR technique. The steric factor is connected with the peculiarities of packing adsorbate molecules on the surface of micropores, if one takes into consideration the intrinsic volume of the molecules. As a result, the apparent fractal dimension (Da >2) of the surface can be introduced, even if the adsorbent surface has no irregularities of the atomic scale size. This effect was shown by simulation of adsorption on the surface of Menger sponge. Based on the analysis mentioned above, an accurate method for measuring monolayer adsorption and surface fractal dimension was suggested.
Cite:
Gavrilov K.
, Kutsovskii Y.
, Paukshtis E.
, Okunev A.
, Aristov Y.
Adsorption of Aliphatic Alcohols, Alkanoic Acids and Acetone on the Silica Surface: Chemical and Steric Factors of Monolayer Formation; Apparent Fractal Dimension
Molecular Crystals and Liquid Crystals Science and Technology. Section A. Molecular Crystals and Liquid Crystals ( (1992 - 2001). 1994. V.248. P.159-171. DOI: 10.1080/10587259408027177 WOS Scopus РИНЦ ANCAN OpenAlex
Adsorption of Aliphatic Alcohols, Alkanoic Acids and Acetone on the Silica Surface: Chemical and Steric Factors of Monolayer Formation; Apparent Fractal Dimension
Molecular Crystals and Liquid Crystals Science and Technology. Section A. Molecular Crystals and Liquid Crystals ( (1992 - 2001). 1994. V.248. P.159-171. DOI: 10.1080/10587259408027177 WOS Scopus РИНЦ ANCAN OpenAlex
Dates:
| Published print: | Jun 1, 1994 |
| Published online: | Sep 24, 2006 |
Identifiers:
| Web of science: | WOS:A1994QV82800023 |
| Scopus: | 2-s2.0-0028699720 |
| Elibrary: | 31097256 |
| Chemical Abstracts: | 1994:588261 |
| Chemical Abstracts (print): | 121:188261 |
| OpenAlex: | W2149402072 |