Structural Characterization of Aniline-Bentonite Composite by FTIR, DTA/TG, and PXRD Analyses and BET Measurement


Koksal E., Afsin B., Tabak A., Caglar B.

SPECTROSCOPY LETTERS, cilt.44, sa.2, ss.77-82, 2011 (SCI İndekslerine Giren Dergi) identifier identifier

  • Cilt numarası: 44 Konu: 2
  • Basım Tarihi: 2011
  • Doi Numarası: 10.1080/00387010903555953
  • Dergi Adı: SPECTROSCOPY LETTERS
  • Sayfa Sayıları: ss.77-82

Özet

The aniline species incorporated into the acid-activated bentonite matrices leads to the decay of the skeletal stretches centered at 1041cm-1 and the rise of new features in the phenyl ring frequency region, 1700-1400cm-1, demonstrates clearly the influence of the acid activation on the Lewis sites necessary for coordination of aniline to bentonite. The exothermic DTA features at 507, 684, and 725 degrees C indicate the release of both the clusters and the decomposed fragments of the aniline-clay composite, and the highly stable carbonaceous residue, respectively. The basal difference by 1.0nm and the much smaller surface area (33.8m2/g) than that of the nonintercalated bentonite (129.2m2/g) prove the presence of the tilted aniline species between the interlamellar grooves of the bentonite framework.