Kinetic study of the intercalation process of dimethylsulfoxide in kaolinite Articles uri icon

publication date

  • November 2015

start page

  • 70

end page

  • 74


  • 144

International Standard Serial Number (ISSN)

  • 0301-7516

Electronic International Standard Serial Number (EISSN)

  • 1879-3525


  • A kinetic study of the intercalation reaction of dimethylsulfoxide (DMSO) into the layers of kaolinite was carried out. Several kaolinite-DMSO mixtures were analyzed at four temperatures (60, 50, 45 and 40 degrees C). Structural characterization was done by X-ray diffraction (XRD). The intercalation reaction was followed by XRD of the kaolinite-DMSO intercalates at different reaction times and temperatures. A kinetic analysis of the process was performed considering a two-step simple mechanism for consecutive reactions: ingress of DMSO molecules into the kaolinite galleries and subsequent rotation of DMSO molecules. Finally, the activation energies of the two steps proposed for the global intercalation process were estimated.


  • kaolinite; dmso; intercalation; kinetic study; nanocomposites; decomposition