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Selective functionalization of the mesopores of SBA-15

Journal Article · · Microporous and Mesoporous Materials

In this study, a method has been developed that permits the highly selective functionalization of the interior and exterior surfaces of the ubiquitous mesoporous material, SBA-15. The key step is reloading the as-synthesized material with structure-directing agent, Pluronic® P123, prior to selective functionalization of the external surface with a silylating agent. This new approach represents a significant improvement over literature procedures. Results from physisorption analyses as well as solid-state NMR permit a detailed, quantitative assessment of functionalized SBA-15. This work also provides insight into the stability of the silyl layer during extraction procedures – an issue often neglected in other studies but of significant importance as decomposition of this layer could result in the introduction of new silanols and reduce the effectiveness of any selective grafting procedure.

Research Organization:
Ames Laboratory (AMES), Ames, IA (United States)
Sponsoring Organization:
USDOE
Grant/Contract Number:
AC02-07CH11358
OSTI ID:
1227147
Alternate ID(s):
OSTI ID: 1251429
Report Number(s):
IS-J--8587; PII: S138718111400612X
Journal Information:
Microporous and Mesoporous Materials, Journal Name: Microporous and Mesoporous Materials Journal Issue: C Vol. 203; ISSN 1387-1811
Publisher:
ElsevierCopyright Statement
Country of Publication:
United States
Language:
English

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Cited By (2)

An overview of ordered mesoporous material SBA-15: synthesis, functionalization and application in oxidation reactions journal November 2016
Spatial distribution of organic functional groups supported on mesoporous silica nanoparticles (2): a study by 1 H triple-quantum fast-MAS solid-state NMR journal January 2018

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