Inelastic incoherent neutron scattering study of the molecular properties of pure hydrogen peroxide and its water mixtures of different concentration

Journal Article · Mon Apr 28 00:00:00 EDT 2014 · Journal of Chemical Physics

DOI:https://doi.org/10.1063/1.4871742· OSTI ID:22253062

Glenneberg, Jürgen ^[1]; Refson, Keith ^[2]

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1. Evonik Industries AG, Business Line Active Oxygens, D-63457 Hanau (Germany)
2. Computational Science and Engineering Department, STFC Rutherford Appleton Laboratory, Chilton, Didcot OX11 0QX (United Kingdom)

We have investigated the spectra of shock-frozen H{sub 2}O{sub 2}–H{sub 2}O mixtures across the full composition range 99.1%–0.0% H{sub 2}O{sub 2}. In contrast to literature reports, we find that intermediate compositions (30%–70% H{sub 2}O{sub 2}) freeze to a solid solution rather than phase separating, which only occurs on annealing to just below the melting point. We have fully characterised the dihydrate H{sub 2}O{sub 2}·2H{sub 2}O (48.6% H{sub 2}O{sub 2}) for the first time and shown that its spectrum can account for the features previously observed on the surface of a Au/TiO{sub 2} catalyst.

• OSTI ID: 22253062
• Journal Information: Journal of Chemical Physics, Vol. 140, Issue 16; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA); ISSN 0021-9606
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
ANNEALING
CATALYSTS
HYDRATES
HYDROGEN PEROXIDE
MELTING POINTS
NEUTRON DIFFRACTION
SOLID SOLUTIONS
SPECTRA
SURFACES
TITANIUM OXIDES
WATER