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High pressure studies of potassium perchlorate

Chemical Physics Letters, ISSN: 0009-2614, Vol: 660, Page: 37-42
2016
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Two experiments are reported on KClO 4 at extreme conditions. A static high pressure Raman study was first conducted to 18.9 GPa. Evidence for at least two new phases was observed: one between 2.4 and 7.7 GPa (possibly sluggish), and the second near 11.7 GPa. Then, the X-ray induced decomposition rate of potassium perchlorate KClO4→hνKCl+2O2 was studied up to 15.2 GPa. The time-dependent growth of KCl and O 2 was monitored. The decomposition rate slowed at higher pressures. We present the first direct evidence for O 2 crystallization at higher pressures, demonstrating that O 2 molecules aggregate at high pressure.

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