Bastow, T.J. and Moodie, A.F. and Smith, M.E. and Whitfield, H.J. (1993) Characterization of titanta gels by O-17 nuclear-magnetic-resonance and electron-diffraction. Journal of Materials Chemistry, 3 (7). pp. 697-702. ISSN 0959-9428.
| The full text of this publication is not available from this repository. (Contact us about this Publication) | |
| Official URL http://dx.doi.org/10.1039/JM9930300697 |
Abstract
The reaction of O-17-labelled water with titanium n-propoxide [Ti(OPrn)4] proceeds rapidly to produce OTi3 and OTi4 environments that can be clearly identified from O-17 magic-angle spinning NMR spectra. The gel structure is highly disordered but the quadrupolar interaction is shown to be small throughout (quadrupolar coupling constant, C(q) < 1.5 MHz). Organic fragments, which can be monitored by C-13 NMR, remain right up until crystallisation of anatase at 300-degrees-C.Crystallisation is confirmed by electron diffraction, and electron microscopy determines the crystallite size to be ca. 3 nm. O-17 NMR and electron diffraction are also used to follow the conversion of anatase to rutile.
| Item Type: | Article |
|---|---|
| Subjects: | Q Science > QD Chemistry |
| Divisions: | Faculties > Science Technology and Medical Studies > School of Biosciences |
| Depositing User: | R.F. Xu |
| Date Deposited: | 22 Oct 2009 19:22 |
| Last Modified: | 22 Oct 2009 19:22 |
| Resource URI: | http://kar.kent.ac.uk/id/eprint/20790 (The current URI for this page, for reference purposes) |
- Depositors only (login required):
