Organotin Compounds in Synthesis of Chemically Modified Silica

It is shown that alkylchlorostannanes can be successfully used for synthesis of chemically modified silica. The hydrolytic stability of the materials obtained is studied. It is revealed that grafted layers of Et3SnCl and Et2SnCl2 can be removed at pH values lower than 4, whereas silica modification...

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Bibliographic Details
Published in:	Journal of colloid and interface science Vol. 241; no. 2; pp. 434 - 438
Main Authors:	Mingalyov, P.G., Rzhevsky, D.V., Perfiliev, Yu.D., Lisichkin, G.V.
Format:	Journal Article
Language:	English
Published:	Elsevier Inc 15-09-2001
Subjects:	hydrolytic stability of grafted layer Mössbauer spectroscopy silica with attached organotin groups hydrolytic stability of grafted layer silica with attached organotin groups Mössbauer spectroscopy
Online Access:	Get full text
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Summary:	It is shown that alkylchlorostannanes can be successfully used for synthesis of chemically modified silica. The hydrolytic stability of the materials obtained is studied. It is revealed that grafted layers of Et3SnCl and Et2SnCl2 can be removed at pH values lower than 4, whereas silica modification with EtSnCl3 produces layers that are stable at pH values 0–7. Mössbauer spectroscopy of the samples obtained was done; parameters of the spectra are determined. It is found that rigidity of attachment of tin atoms strongly increases in passing from Et3SnCl to Et2SnCl2 and, further, to EtSnCl3.
ISSN:	0021-9797 1095-7103
DOI:	10.1006/jcis.2001.7685