Issue 25, 2012
From the journal:

Chemical Communications

A well-defined mesoporous amine silica surface via a selective treatment of SBA-15 with ammonia†

Anissa Bendjeriou-Sedjerari,a   Jérémie D. A. Pelletier,a   Edy Abou-hamad,a   Lyndon Emsleyb  and  Jean-Marie Basset*a  

* Corresponding authors

a King Abdullah University of Science & Technology, KAUST Catalysis Center (KCC), 23955-6900 Thuwal, Saudi Arabia
E-mail: jeanmarie.basset@kaust.edu.sa

b Université de Lyon, CNRS/ENS-Lyon/UCB Lyon 1, Centre de RMN à Très Hauts Champs, 5 rue de la Doua, 69100 Villeurbanne, France

Abstract

2D double-quantum 1H–1H NMR unambiguously shows that the “isolated” [triple bond, length as m-dash]Si–OH surface silanols of dehydroxylated SBA-15 are converted upon treatment with ammonia into single silylamine surface site [triple bond, length as m-dash]Si–NH2. The “gem” di-silanols ([double bond, length as m-dash]Si(OH)2) remain intact. Treatment using HMDS produces ([double bond, length as m-dash]Si(OSiMe3)2) but leaves [triple bond, length as m-dash]Si–NH2 untouched. The resulting surface is hydrophobic and stable.

Graphical abstract: A well-defined mesoporous amine silica surface via a selective treatment of SBA-15 with ammonia

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Article information

DOI
https://doi.org/10.1039/C2CC00143H
Article type
Communication
Submitted
08 Jan 2012
Accepted
27 Jan 2012
First published
30 Jan 2012

Chem. Commun., 2012,48, 3067-3069

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A well-defined mesoporous amine silica surface via a selective treatment of SBA-15 with ammonia

A. Bendjeriou-Sedjerari, J. D. A. Pelletier, E. Abou-hamad, L. Emsley and J. Basset, Chem. Commun., 2012, 48, 3067 DOI: 10.1039/C2CC00143H

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