Phase transitions in ammonium perchlorate to 26 GPA and 700 K in a diamond anvil cell

Foltz, M. Frances; Maienschein, J L

doi:10.1063/1.50792

Cited by 2 publications

(3 citation statements)

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“…However, no evidence of phase transitions was observed. 7 Interestingly, obvious changes at 0.9 and 3.0 GPa for structural transitions were observed by Peiris et al 20 using power X-ray diffraction, infrared, and Raman spectroscopy up to 5.6 GPa. The new structure cannot be refined to orthorhombic system.…”

Section: ■ Introductionmentioning

confidence: 93%

“…The structure of AP is supported by hydrogen bonds and electrostatic interactions. AP undergoes a structural transformation to a cube phase at temperatures above 511−513 K. 7 When cooling, two structural transitions can be detected at about 180 and 40 K by the abnormal changes from Raman spectra. 8 Pressure is widely used to study the properties of materials, which is also a powerful tool to design new kind of materials by tuning the distances between molecules and thus structural changes.…”

Section: ■ Introductionmentioning

confidence: 99%

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Exploration of the Energetic Material Ammonium Perchlorate at High Pressures: Combined Raman Spectroscopy and X-ray Diffraction Study

Kang

Wang

et al. 2018

J. Phys. Chem. C

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High-pressure behaviors of ammonium perchlorate (NH4ClO4), a widely used energetic oxidizer, have been investigated using in situ angle-dispersive X-ray diffraction (XRD) and Raman spectroscopy experiments up to 22.0 and 20.4 GPa, respectively. A sluggish structural transformation is identified, which started at ∼2.4 GPa and completed at ∼10.6 GPa. The crystal structure of high pressure (phase II) is refined to possess a symmetry of P2. The structural transformation is indicated by the obvious changes in XRD patterns, Raman spectra, and discontinuities of peak positions. Variations in lattice constants and volume of unit cell of the ambient structure (phase I) up to ∼10.0 GPa are also presented. The compressibility of phase I is anisotropic. The compression ratio of b axis is larger than that of a and c axes. The bulk modulus of phase I is B 0 = 24.5(4) GPa, and its first pressure derivative is B 0′ = 4.5(2). The phase transition is reversible, as the XRD pattern transformed to the initial profile upon release of pressure. On the basis of the Raman and XRD analysis, the high-pressure-induced phase transition of ammonium perchlorate is proposed to be associated with rearrangement of hydrogen-bonded networks.

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Section: ■ Introductionmentioning

confidence: 93%

Section: ■ Introductionmentioning

confidence: 99%

Exploration of the Energetic Material Ammonium Perchlorate at High Pressures: Combined Raman Spectroscopy and X-ray Diffraction Study

Kang

Wang

et al. 2018

J. Phys. Chem. C

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“…The experimental results show the behaviour of AP under the pressure up to 25 GPa at temperatures slightly above 240 C (the point of transition from the rhombic modification to the cubic one); melting is observed [47].…”

Section: 1mentioning

confidence: 96%

Nano-metal oxide: potential catalyst on thermal decomposition of ammonium perchlorate

Chaturvedi

Dave

2011

Journal of Experimental Nanoscience

110

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In this review, an attempt to collect the summarised data of literature on catalytic effect of nano-oxides, such as mono oxides, mixed oxide, binary and ternary ferrites and rare earth metal oxides on the thermal decomposition of ammonium perchlorate (AP) is made. Influence of size effect of oxides on thermal decomposition of AP and comparison of bulk and nanosized oxides is also discussed here. Several experimental results revealed that due to small size and large surface area nanosized metal oxides are more potential catalysts on thermal decomposition of AP compared to their bulk size oxides.

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Phase transitions in ammonium perchlorate to 26 GPA and 700 K in a diamond anvil cell

Cited by 2 publications

References 1 publication

Exploration of the Energetic Material Ammonium Perchlorate at High Pressures: Combined Raman Spectroscopy and X-ray Diffraction Study

Exploration of the Energetic Material Ammonium Perchlorate at High Pressures: Combined Raman Spectroscopy and X-ray Diffraction Study

Nano-metal oxide: potential catalyst on thermal decomposition of ammonium perchlorate

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