Decomposition kinetics by thermogravimetry for the intercalation of kaolin with dimethylsulphoxide

Intercalation of kaolin with dimethylsulphoxide was carried out under hydrothermal conditions using a Teflon reactor. The intercalated complex has been characterized by X-ray diffraction (XRD), Fourier transform-infrared spectroscopy and thermogravimetry analysis techniques. By thermogravimetric ana...

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Bibliographic Details
Published in:	Materials letters Vol. 57; no. 22; pp. 3397 - 3401
Main Authors:	Lopes, P.Cordeiro, Dias, Francisco A., da Silva, L.R.Damasceno
Format:	Journal Article
Language:	English
Published:	Amsterdam Elsevier B.V 01-07-2003 Elsevier
Subjects:	Chemistry Decomposition kinetics Dimethylsulphoxide Exact sciences and technology Inorganic chemistry and origins of life Intercalation Kaolin Kinetics and mechanism of reactions Thermogravimetry Decomposition kinetics Intercalation Dimethylsulphoxide Kaolin Thermogravimetry Clay Fourier transformation Thermal decomposition Experimental study X ray diffraction Inorganic compound Intercalation compound Methyl sulfoxide Kinetics Infrared spectrum Activation energy Hydrothermal condition Organic compounds
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Summary:	Intercalation of kaolin with dimethylsulphoxide was carried out under hydrothermal conditions using a Teflon reactor. The intercalated complex has been characterized by X-ray diffraction (XRD), Fourier transform-infrared spectroscopy and thermogravimetry analysis techniques. By thermogravimetric analysis data, the kinetic parameters E a, and A were calculated for the thermal decomposition of the kaolin–dimethylsulphoxide complex by using Arrhenius method: E a=98.62±3.73 kJ/mol and A=12.55, and using Ozawa method, E a=93.67±3.54 kJ/mol, respectively.
Bibliography:	ObjectType-Article-2 SourceType-Scholarly Journals-1 ObjectType-Feature-1 content type line 23
ISSN:	0167-577X 1873-4979
DOI:	10.1016/S0167-577X(03)00082-X