High pressure studies of potassium perchlorate

被引：14
|
作者：
Pravica, Michael [1 ]
Wang, Yonggang [1 ,2 ]
Sneed, Daniel [1 ]
Reiser, Sharissa [1 ]
White, Melanie [1 ]
机构：
[1] Univ Nevada, Dept Phys & Astron, High Pressure Sci & Engn Ctr HiPSEC, Las Vegas, NV 89154 USA
[2] Carnegie Inst Sci, Geophys Lab, High Pressure Synerget Consortium, Argonne, IL 60439 USA
来源：
CHEMICAL PHYSICS LETTERS | 2016年 / 660卷
关键词：
RADIATION-INDUCED DECOMPOSITION; CHLORATE; KCLO4; PETN; TATB;
D O I：
10.1016/j.cplett.2016.07.060
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
Two experiments are reported on KClO4 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 ->(hv) KCl + 2O(2)) 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. (C) 2016 Elsevier B.V. All rights reserved.
引用
收藏
页码：37 / 42
页数：6
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