## Abstract The bulk structural evolution during the decomposition of ammonium paratungstate (APT) under various oxidizing and reducing gases was elucidated by the complementary techniques, in situ XAS, in situ XRD, and TG/DSC, combined with mass spectrometry. In the temperature range from 300 to 6
Microwave Decomposition of Solid Crystalline Ammonium Paratungstate and Ammonium Metatungstate
β Scribed by J. Pfeifer; E.G. Badaljan; P. Tekula-Buxbaum; K. Vadasdi
- Publisher
- Elsevier Science
- Year
- 1993
- Tongue
- English
- Weight
- 453 KB
- Volume
- 105
- Category
- Article
- ISSN
- 0022-4596
No coin nor oath required. For personal study only.
β¦ Synopsis
The potential for microwave decomposition of solid crystalline ammonium paratungstate (APT) and ammonium metatungstate (AMT) was investigated. It was observed that APT and AMT interact with (2.45-\mathrm{GHz}) microwave radiation. Samples of ammonium paratungstate ( (20-50 \mathrm{~g}) ) were successfully converted into (\mathrm{WO}_{3-x}(0 \leq x \leq 0.2)). A wide variety of morphological parameters were found. The interaction of AMT with the (2.45-\mathrm{GHz}) microwave radiation resulted in the partial loss of crystalline water and the partial dissolution of the sample in the released water. 1993 Academic Press, Inc.
π SIMILAR VOLUMES
The decomposition of ammonium chlorate was studied by measuring the pressure of non-condensable gases formed and the loss in weight. Both methods resulted in almost identical ~/t curves. A measurable decomposition started at 50C, but some days after preparation a slight decomposition was observed ev