Abstract
A combination of FTi.r. and INS spectroscopy is used in a vibrational study of the bending and stretching vibrations of the acidic hydroxyl groups of Y zeolites. The influence of the number of acidic Bronsted sites and the Si/Al ratio is discussed. Out-of-plane hydroxyl bending modes are assigned to vibrations centered around 419 cm-1 and in-plane hydroxyl bending modes are assigned to vibrations centered around 1089 cm-1. Upon dealumination, these bands are shifted by approximately 30 cm-1 to lower values. The less intense bands at 319,470,565,765, and 1130 cm-1 are assigned to proton- coupled framework vibrations. Upon dealumination, the mode at 319 cm-1 is shifted to lower frequencies and the modes at 565 and 1130 cm-1 are shifted to higher frequencies
| Original language | English |
|---|---|
| Pages (from-to) | 315-319 |
| Journal | Zeolites |
| Volume | 12 |
| Issue number | 3 |
| DOIs | |
| Publication status | Published - 1992 |
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Jacobs, W. P. J. H., Jobic, H., Wolput, van, J. H. M. C., & Santen, van, R. A. (1992). Fourier-transform infrared and inelastic neutron-scattering study of hy zeolites. Zeolites, 12(3), 315-319. https://doi.org/10.1016/0144-2449(92)90106-Y, https://doi.org/10.1016/S0144-2449(05)80301-X