Abstract
Mg-Al layered double hydroxides (Mg-Al LDHs) intercalated with benzenesulfonate (BS-) and benzenedisulfonate (BDS2-) ions were prepared by coprecipitation and characterized by X-ray diffraction, FT-IR spectroscopy, and chemical analyses. The intercalated BS- and BDS2- maintained their intrinsic molecular structures within the Mg-Al LDH interlayers. At low intercalation levels, the benzene ring of BS- in BS · Mg-Al LDH was inclined at 30° relative to the plane of the brucite-like layers of Mg-Al LDH. With increasing BS- content, the benzene ring adopted an additional configuration perpendicular to the Mg-Al LDH layers. In BDS-intercalated Mg-Al LDH, the benzene ring of BDS2- was tilted at 26° relative to the plane of the Mg-Al LDH layers. Intercalation levels of BDS2- were smaller than those of BS- despite the greater charge density of BDS2-, which was likely attributable to a greater degree of electrostatic repulsion between intercalated anions.
Original language | English |
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Pages (from-to) | 410-415 |
Number of pages | 6 |
Journal | Microporous and Mesoporous Materials |
Volume | 114 |
Issue number | 1-3 |
DOIs | |
Publication status | Published - 2008 Sep 1 |
Keywords
- Benzenedisulfonate
- Benzenesulfonate
- Coprecipitation
- Intercalation
- Magnesium-aluminum layered double hydroxide
ASJC Scopus subject areas
- Chemistry(all)
- Materials Science(all)
- Condensed Matter Physics
- Mechanics of Materials