Intercalation of Ethylene Glycol into Yttrium Hydroxide Layered Materials

Intercalation of ethylene glycol into layered yttrium hydroxide containing nitrate counterions was accomplished by heating the reagents in a methanol solution of sodium methoxide under autogenous pressure at 413 K for 20 h. The resulting crystalline material had an expanded interlayer distance of 10...

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Veröffentlicht in:Inorganic chemistry 2010-04, Vol.49 (8), p.3888-3895
Hauptverfasser: Xi, Yuanzhou, Davis, Robert J
Format: Artikel
Sprache:eng
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Zusammenfassung:Intercalation of ethylene glycol into layered yttrium hydroxide containing nitrate counterions was accomplished by heating the reagents in a methanol solution of sodium methoxide under autogenous pressure at 413 K for 20 h. The resulting crystalline material had an expanded interlayer distance of 10.96 Å, confirming the intercalation of an ethylene glycol derived species. Characterization of the material by FT-IR spectroscopy, thermogravimetric analysis, and the catalytic transesterification of tributyrin with methanol was consistent with direct bonding of ethylene glycolate anions (O2C2H5 −) to the yttrium hydroxide layers, forming Y−O−C bonds. The layers of the material are proposed to be held together by H-bonding between the hydroxyls of grafted ethylene glycol molecules attached to adjacent layers. Glycerol can also be intercalated into yttrium hydroxide layered materials by a similar method.
ISSN:0020-1669
1520-510X
DOI:10.1021/ic1000478