CHED 1132 |
| Attenuated total internal reflection Fourier-transform infrared spectroscopy (ATR-FTIR) was used to compare changes in the structures of two hydrothermal nontronite clays as they were reduced. NAu-1 is a bright yellowish-green clay containing Fe3+ in only the octahedral sheet; NAu2- is a dark brown clay containing Fe3+ in both the octahedral and tetrahedral sheets. Oriented clay films were studied under plane polarized light in order to qualitatively determine changes in the orientation of OH and Si-O bonds as the iron in each was reduced. The results of this study aid in understanding the role of tetrahedral iron and changes in clay structure upon reduction. |
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Undergraduate Research Poster Session: Environmental Chemistry
2:00 PM-4:00 PM, Monday, April 7, 2008 Morial Convention Center -- Hall A, Poster
Division of Chemical Education |