Other
Scientific paper
Jun 1998
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1998aipc..430..678p&link_type=abstract
The eleventh international conference on fourier transform spectroscopy. AIP Conference Proceedings, Volume 430, pp. 678-680 (1
Other
Optical Properties, Other Nonmetallic Inorganics
Scientific paper
Intercalation of kaolinites with organic substances provides a method of expansion for a typically non-expanding clay. The dehydroxylation process is affected by the interaction of the kaolinite with the organic molecules, providing a mechanism for the dehydroxylation to occur at a decreased temperature. The dehydroxylation of the Birdwood kaolinite and its intercalates has been investigated by Fourier Transform in-situ infrared emission spectroscopy over the temperature range 200 °C to 600 °C at 25 °C intervals. Dehydroxylation of the intercalated kaolinite was observed by the decrease in intensity of the bands at 3670 cm-1, 3650 and 3600 cm-1 (inner surface hydroxyl bands) and 3620 cm-1 (inner hydroxyl band). The first two bands represent the out-of-phase vibrations of the hydroxyl stretching region of the kaolinite. The band at 3605 cm-1 is assigned to the inner surface hydroxyl hydrogen bonded to the acetate ion. It is proposed that the infrared emission process occurs through the loss of energy through the kaolinite out-of-phase vibrations. Kaolinite and its intercalated complexes lose their inner surface and inner hydroxyl groups simultaneously, except at the final stages of dehydroxylation, where the inner surface hydroxyl group is lost and some of the inner hydroxyl group remains. For the dehydroxylation of the potassium acetate intercalated kaolinite, the process was studied by the decrease in the bands at 3670, 3650, 3620 and 3600 cm-1. It was found that the dehydroxylation of the intercalated kaolinite occurred at 175 °C less than that for the untreated kaolinite, the presence of the intercalating molecule provided a different mechanism by which dehydroxylation could occur.
Cash Greg A.
Frost Ray L.
Paroz Gina N.
No associations
LandOfFree
Dehydroxylation of intercalated kaolinite an infrared emission spectroscopic study does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Dehydroxylation of intercalated kaolinite an infrared emission spectroscopic study, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Dehydroxylation of intercalated kaolinite an infrared emission spectroscopic study will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1330701