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Synthesis of Highly Ordered Carbon Molecular Sieves via Template-Mediated Structural Transformation

Ryoo, Ryong, Joo, Sang Hoon, Jun, Shinae·1999·The Journal of Physical Chemistry B

Abstract

Ordered carbon molecular sieves exhibiting Bragg diffraction of X-ray lines have been synthesized for the first time, using mesoporous silica molecular sieves as the template. Sucrose was converted to carbon inside the mesopores of the silica molecular sieves through a mild carbonization process using a sulfuric acid catalyst. The carbon molecular sieves were obtained after the removal of the silica framework using an aqueous solution of sodium hydroxide. The X-ray diffraction, transmission electron microscopy, and pore size analysis showed that the structure of the carbon molecular sieves consisted of a three-dimensional regular array of uniform mesopores 3 nm in diameter. The structure was not simply a negative replica of the used silica template, but the synthesis mechanism involved the unique transformation into a new ordered array that was triggered by the removal of the silica frameworks. The highly ordered mesoporous texture suggested its scientific and technological importance as a new shape-selective catalyst, adsorbent, sensor, and electrode material.

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Authors
Ryoo, R., Joo, S. H., & Jun, S.
Venue
The Journal of Physical Chemistry B
Published
1999-08-27
Volume
103
Issue
37
Pages
7743-7746
ISSN
  • 1520-5207 (ISSN-L)
  • 1520-6106
OpenAlex
W2028755877
Cited by
2,450
References
0
FWCI
18.58
Type
journal article
Language
en
Open access
closed

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Contains information from the Semantic Scholar Academic Graph Datasets, made available under the ODC Attribution License (ODC-BY 1.0).

Semantic Scholar’s data is described in: Kinney, R., et al. (2023). The Semantic Scholar Open Data Platform. arXiv:2301.10140.