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Title: Selective functionalization of the mesopores of SBA-15

Abstract

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.

Authors:
 [1];  [1];  [2];  [2];  [1]
+ Show Author Affiliations
  1. Queen's Univ., Kingston, ON (Canada)
  2. Iowa State Univ., Ames, IA (United States)
Publication Date:
Research Org.:
Ames Lab., Ames, IA (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1227147
Alternate Identifier(s):
OSTI ID: 1251429
Report Number(s):
IS-J-8587
Journal ID: ISSN 1387-1811; PII: S138718111400612X
Grant/Contract Number:  
AC02-07CH11358
Resource Type:
Accepted Manuscript
Journal Name:
Microporous and Mesoporous Materials
Additional Journal Information:
Journal Volume: 203; Journal Issue: C; Journal ID: ISSN 1387-1811
Publisher:
Elsevier
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; mesoporous silica; SBA-15; silylation; surface functionalization; selective grafting; solid state NMR

Citation Formats

Webb, Jonathan D., Seki, Tomohiro, Goldston, Jennifer F., Pruski, Marek, and Crudden, Cathleen M. Selective functionalization of the mesopores of SBA-15. United States: N. p., 2014. Web. doi:10.1016/j.micromeso.2014.10.032.
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Webb, Jonathan D., Seki, Tomohiro, Goldston, Jennifer F., Pruski, Marek, & Crudden, Cathleen M. Selective functionalization of the mesopores of SBA-15. United States. https://doi.org/10.1016/j.micromeso.2014.10.032
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Webb, Jonathan D., Seki, Tomohiro, Goldston, Jennifer F., Pruski, Marek, and Crudden, Cathleen M. Thu . "Selective functionalization of the mesopores of SBA-15". United States. https://doi.org/10.1016/j.micromeso.2014.10.032. https://www.osti.gov/servlets/purl/1227147.
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@article{osti_1227147,
title = {Selective functionalization of the mesopores of SBA-15},
author = {Webb, Jonathan D. and Seki, Tomohiro and Goldston, Jennifer F. and Pruski, Marek and Crudden, Cathleen M.},
abstractNote = {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.},
doi = {10.1016/j.micromeso.2014.10.032},
journal = {Microporous and Mesoporous Materials},
number = C,
volume = 203,
place = {United States},
year = {Thu Oct 23 00:00:00 EDT 2014},
month = {Thu Oct 23 00:00:00 EDT 2014}
}
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https://doi.org/10.1016/j.micromeso.2014.10.032
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    An overview of ordered mesoporous material SBA-15: synthesis, functionalization and application in oxidation reactions
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