Phase transformations of H₄4[SiW₁₂0₄₀]xH₂0 in the temperature range 25 - 900 ⁰C have been investigated and characterised by differential thermal analysis (DTA), thermogravimeteric analysis (TGA), X-ray powder diffraction (XRD), ²⁹Si MAS NMR and FT-IR spectroscopy. Dehydration occurs between 25 - 300 °C to give three crystalline hydrated states (x = 24, 14 and 6) and finally an anhydrous form.
| Identifer | oai:union.ndltd.org:bl.uk/oai:ethos.bl.uk:494624 |
| Date | January 2009 |
| Creators | Derrick, Glyn |
| Publisher | Open University |
| Source Sets | Ethos UK |
| Detected Language | English |
| Type | Electronic Thesis or Dissertation |
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