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Baloh, P., Grothe, H., Whitmore, K., Parker, S. F., Llorente, B. M., & Escribano, R. (2011). Spectroscopic Investigation of Nitric Acid Monohydrate. Molecular Physics, 109(17–18), 2083–2093. https://doi.org/10.1080/00268976.2011.593571
E057-02 - Fachbereich Universitäre Serviceeinrichtung für Transmissions- Elektronenmikroskopie E165-01 - Forschungsbereich Physikalische Chemie E165-01-5 - Forschungsgruppe Physikalische Chemie von Aerosolpartikeln
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Journal:
Molecular Physics
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ISSN:
0026-8976
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Date (published):
2011
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Number of Pages:
11
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Peer reviewed:
Yes
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Keywords:
Condensed Matter Physics; Molecular Biology; Physical and Theoretical Chemistry; Biophysics
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Abstract:
Vibrational spectroscopy, X-ray diffraction, and electron microscopy have been applied to investigate the crystallization of concentrated amorphous nitric acid (0.5 ≤ x ≤ 0.95). Crystalline nitric acid monohydrate (HNO3·H2O) is the major hydrate phase detected together with traces of metastable nitric acid dihydrate (HNO3·2H2O) and pure crystalline nitric acid. Nitric acid tetratohydrate (4HNO3·H2...
Vibrational spectroscopy, X-ray diffraction, and electron microscopy have been applied to investigate the crystallization of concentrated amorphous nitric acid (0.5 ≤ x ≤ 0.95). Crystalline nitric acid monohydrate (HNO3·H2O) is the major hydrate phase detected together with traces of metastable nitric acid dihydrate (HNO3·2H2O) and pure crystalline nitric acid. Nitric acid tetratohydrate (4HNO3·H2O) was not achievable. The diffraction data show nitric acid monohydrate as a highly symmetrical structure, which bestows clearly laid out infrared, Raman and inelastic neutron scattering spectra. The low frequency region is still a matter of discussion since experiment and theory are not in accordance. The microscopic picture underlines the model character of nitric acid monohydrate, since the crystalline particles adopt a spherical shape, on various agglomeration stages, which minimizes the interference of scattering on the spectroscopic data.
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Research Areas:
Environmental Monitoring and Climate Adaptation: 30% Sustainable and Low Emission Mobility: 30% Materials Characterization: 30% Surfaces and Interfaces: 10%
