Desorption of stearic acid upon surfactant adsorbed montmorillonite : a thermogravimetric study
Data(s) |
01/04/2010
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Resumo |
Thermal analysis and differential thermal analysis offers a means of studying the desorption of acids such as stearic acid from clay surfaces. Both adsorption and chemisorption can be distinguished through the differences in the temperature of the mass losses. Increased adsorption is achievable by adsorbing onto a surfactant adsorbed montmorillonite. Stearic acid sublimes at 179 °C but when adsorbed upon montmorillonite sublimes at 207 and 248 °C. These mass loss steps are ascribed to the desorption of the stearic acid on the external surfaces of the organoclays and from the de-chemisorption from the surfactant held in the interlayer of the montmorillonite. |
Formato |
application/pdf |
Identificador | |
Publicador |
Springer |
Relação |
http://eprints.qut.edu.au/31835/1/c31835.pdf DOI:10.1007/s10973-009-0169-2 Lu, Longfei, Cai, Jingong, & Frost, Ray L. (2010) Desorption of stearic acid upon surfactant adsorbed montmorillonite : a thermogravimetric study. Journal of Thermal Analysis and Calorimetry, 100(1), pp. 141-144. |
Direitos |
Copyright 2010 Akadémiai Kiadó. The original publication is available at SpringerLink http://www.springerlink.com |
Fonte |
Chemistry; Faculty of Science and Technology |
Palavras-Chave | #030603 Colloid and Surface Chemistry #030600 PHYSICAL CHEMISTRY (INCL. STRUCTURAL) #030606 Structural Chemistry and Spectroscopy #thermogravimetric analysis, differential thermogravimetric analysis, chemisorption, montmorillonite, desorption, stearic acid. |
Tipo |
Journal Article |