Structural Characterization of Aniline-Bentonite Composite by FTIR,DTA/TG,and PXRD Analyses and BET Measurement |
| |
| Authors: | E Koksal A Tabak B Caglar |
| |
| Institution: | 1. Department of Chemistry, Faculty of Arts and Sciences , Ondokuz Mayis University , Samsun, Turkey;2. Department of Chemistry, Faculty of Arts and Sciences , Rize University , Rize, Turkey;3. Department of Chemistry, Faculty of Arts and Sciences , Erzincan University , Erzincan, Turkey |
| |
| Abstract: | ABSTRACT The aniline species incorporated into the acid-activated bentonite matrices leads to the decay of the skeletal stretches centered at 1041 cm?1 and the rise of new features in the phenyl ring frequency region, 1700–1400 cm?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°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 ～1.0 nm and the much smaller surface area (33.8 m2/g) than that of the nonintercalated bentonite (129.2 m2/g) prove the presence of the tilted aniline species between the interlamellar grooves of the bentonite framework. |
| |
| Keywords: | anline species bentonite intercalation surface properties thermal analysis |
|
|
