Die sorption organischer moleküle an verestertem silikagel

Autor:	Michael Uihlein, István Halász
Rok vydání:	1973
Předmět:	Chromatography Silica gel Solid surface Organic Chemistry General Medicine Biochemistry Analytical Chemistry Organic molecules Silanol chemistry.chemical_compound Adsorption chemistry Monolayer Gas chromatography
Zdroj:	Journal of Chromatography A. 80:15-23
ISSN:	0021-9673
DOI:	10.1016/s0021-9673(01)85346-2
Popis:	Adsorption of organic molecules on esterified silica gel. II. Demonstration of the adsorption hypothesis by means of the surface model Detailed models of the surface of the silica gel and that of esterified gel were developed. By means of these models it was found that the unesterified silanol groups on the surface are screened out by the esterified organic molecules. The experimental results in Part I can be explained as follows: By the esterification the energetic inhomogeneity of the solid surface is shielded and the energies of adsorption of organic samples are diminished. It is therefore postulated that in gas chromatography esterified silica gel are special cases of gas adsorption chromatography monolayers.
Databáze:	OpenAIRE
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