A preliminary study of the relation between adsorption and CP-MAS-NMR characteristics of fused silica model substrates

A.B. Scholten; J.G.M. Janssen; J.W. Haan, de; C.A.M.G. Cramers

A preliminary study of the relation between adsorption and CP-MAS-NMR characteristics of fused silica model substrates

A.B. Scholten
, J.G.M. Janssen
, J.W. Haan, de
, C.A.M.G. Cramers

Chemical Engineering and Chemistry

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › Academic

Abstract

The fumed silica model substrate Aerosil was trimethylsilylated to different extents and studied by the combination of IGC and 29Si CP-MAS-NMR. Dihydroxydisiloxane groups were shown to be chemically more reactive than monohydroxytrisiloxane groups. Chromatographic experiments showed that these groups play an important role in the adsorption of functionalized solutes. Apart from the lowering of the surf ace energy of the Aerosil phases, also the types and the magnitudes of the specific interactions of test components with residual silanols could be studied. It was shown that IGC gives complementary information on the physico-chemical nature of the chemical surface structures identified by 29Si CP-MAS-NMR.

Original language	English
Title of host publication	15th International Symposium on Capillary Chromatography, Riva del Garda
Editors	P.J.F. Sandra, G. Devos, P. Sandra
Place of Publication	Heidelberg
Publisher	Hüthig
Pages	210-219
Publication status	Published - 1993

Cite this

@inproceedings{d3ea86ca980a46f2aaa80f76f5a551d9,

title = "A preliminary study of the relation between adsorption and CP-MAS-NMR characteristics of fused silica model substrates",

abstract = "The fumed silica model substrate Aerosil was trimethylsilylated to different extents and studied by the combination of IGC and 29Si CP-MAS-NMR. Dihydroxydisiloxane groups were shown to be chemically more reactive than monohydroxytrisiloxane groups. Chromatographic experiments showed that these groups play an important role in the adsorption of functionalized solutes. Apart from the lowering of the surf ace energy of the Aerosil phases, also the types and the magnitudes of the specific interactions of test components with residual silanols could be studied. It was shown that IGC gives complementary information on the physico-chemical nature of the chemical surface structures identified by 29Si CP-MAS-NMR.",

author = "A.B. Scholten and J.G.M. Janssen and \{Haan, de\}, J.W. and C.A.M.G. Cramers",

year = "1993",

language = "English",

pages = "210--219",

editor = "P.J.F. Sandra and G. Devos and P. Sandra",

booktitle = "15th International Symposium on Capillary Chromatography, Riva del Garda",

publisher = "H{\"u}thig",

address = "Germany",

}

A preliminary study of the relation between adsorption and CP-MAS-NMR characteristics of fused silica model substrates. / Scholten, A.B.; Janssen, J.G.M.; Haan, de, J.W. et al.
15th International Symposium on Capillary Chromatography, Riva del Garda. ed. / P.J.F. Sandra; G. Devos; P. Sandra. Heidelberg: Hüthig, 1993. p. 210-219.

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › Academic

TY - GEN

T1 - A preliminary study of the relation between adsorption and CP-MAS-NMR characteristics of fused silica model substrates

AU - Scholten, A.B.

AU - Janssen, J.G.M.

AU - Haan, de, J.W.

AU - Cramers, C.A.M.G.

PY - 1993

Y1 - 1993

N2 - The fumed silica model substrate Aerosil was trimethylsilylated to different extents and studied by the combination of IGC and 29Si CP-MAS-NMR. Dihydroxydisiloxane groups were shown to be chemically more reactive than monohydroxytrisiloxane groups. Chromatographic experiments showed that these groups play an important role in the adsorption of functionalized solutes. Apart from the lowering of the surf ace energy of the Aerosil phases, also the types and the magnitudes of the specific interactions of test components with residual silanols could be studied. It was shown that IGC gives complementary information on the physico-chemical nature of the chemical surface structures identified by 29Si CP-MAS-NMR.

AB - The fumed silica model substrate Aerosil was trimethylsilylated to different extents and studied by the combination of IGC and 29Si CP-MAS-NMR. Dihydroxydisiloxane groups were shown to be chemically more reactive than monohydroxytrisiloxane groups. Chromatographic experiments showed that these groups play an important role in the adsorption of functionalized solutes. Apart from the lowering of the surf ace energy of the Aerosil phases, also the types and the magnitudes of the specific interactions of test components with residual silanols could be studied. It was shown that IGC gives complementary information on the physico-chemical nature of the chemical surface structures identified by 29Si CP-MAS-NMR.

M3 - Conference contribution

SP - 210

EP - 219

BT - 15th International Symposium on Capillary Chromatography, Riva del Garda

A2 - Sandra, P.J.F.

A2 - Devos, G.

A2 - Sandra, P.

PB - Hüthig

CY - Heidelberg

ER -

A preliminary study of the relation between adsorption and CP-MAS-NMR characteristics of fused silica model substrates

Abstract

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