Journal
BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN
Volume 88, Issue 9, Pages 1241-1249Publisher
CHEMICAL SOC JAPAN
DOI: 10.1246/bcsj.20150155
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- JSPS KAKENHI [26248060]
- [DC2]
- Grants-in-Aid for Scientific Research [26248060] Funding Source: KAKEN
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Interlayer-condensed materials of protonated layered silicate (magadiite) are synthesized by refluxing in N-methylformamide (NMF) and the subsequent calcination. The obtained materials possess 2-3 times higher surface areas than calcined protonated magadiite, depending on the time of refluxing. NMF molecules in the interlayer spaces are converted to organic substances with higher thermal stability during the refluxing, which is useful for the control of the stacking sequence of silicate layers and for the following interlayer condensation to increase the microporosity. The microporosity of the material obtained by the treatment of protonated magadiite with NMF at r.t. and the subsequent calcination is similar to that of simply calcined protonated magadiite, indicating that the retention of thermally stable substances in the interlayer is critical for the increase in the pore volume and surface area of the derivative from magadiite. The method reported here will stimulate re-estimation of a large number of known layered silicate organic intercalation compounds as possible candidates for the preparation of porous silica by interlayer condensation.
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