Interlayer condensation of protonated layered silicate magadiite through refluxing in N-methylformamide

Yusuke Asakura, Nami Hosaka, Shimon Osada, Taichi Terasawa, Atsushi Shimojima, Kazuyuki Kuroda

Research output: Contribution to journalArticle

4 Citations (Scopus)

Abstract

Interlayer-condensed materials of protonated layered silicate (magadiite) are synthesized by refluxing in Nmethylformamide (NMF) and the subsequent calcination. The obtained materials possess 23 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 silicateorganic intercalation compounds as possible candidates for the preparation of porous silica by interlayer condensation.

Original languageEnglish
Pages (from-to)1241-1249
Number of pages9
JournalBulletin of the Chemical Society of Japan
Volume88
Issue number9
DOIs
Publication statusPublished - 2015 Jan 1
Externally publishedYes

ASJC Scopus subject areas

  • Chemistry(all)

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