Layered Double Hydroxide Intercalated with Sodium Dodecyl Sulfate

Autor: Sabine M. C. Verryn, F.J.W.J. Labuschagne, Walter Wilhelm Focke, Lumbidzani Moyo
Rok vydání: 2012
Předmět:
Zdroj: Molecular Crystals and Liquid Crystals. 555:51-64
ISSN: 1563-5287
1542-1406
DOI: 10.1080/15421406.2012.634366
Popis: The study investigates the intercalation of magnesium-aluminum layered double hydroxide with sodium dodecyl sulfate. Monolayer intercalation of the LDH-carbonate was achieved using an acetic acid-assisted ion exchange reaction. The carboxylic acid is believed to assist intercalation of dodecyl sulfate by facilitating the elimination of the carbonate ions present in the anionic clay. Bilayer intercalation was achieved by a coprecipitation method and this resulted in a highly crystalline product. However, in this case the interlayer contains a mixture of dodecyl sulfate anion, sodium dodecyl sulfate and the hydrolysis product dodecanol. The organic phase in the latter product shows an order-disorder transition between 100°C and 120°C, with thermal degradation and volatilization commencing above 170°C.
Databáze: OpenAIRE