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

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.
Authors:
 [1] ;  [2] ;  [3] ;  [4]
  1. AQura GmbH, D-63457 Hanau (Germany)
  2. Evonik Industries AG, Business Line Active Oxygens, D-63457 Hanau (Germany)
  3. Computational Science and Engineering Department, STFC Rutherford Appleton Laboratory, Chilton, Didcot OX11 0QX (United Kingdom)
  4. ISIS Facility, STFC Rutherford Appleton Laboratory, Chilton, Didcot, Oxon OX11 0QX (United Kingdom)
Publication Date:
OSTI Identifier:
22253062
Resource Type:
Journal Article
Resource Relation:
Journal Name: Journal of Chemical Physics; Journal Volume: 140; Journal Issue: 16; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
37 INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY; ANNEALING; CATALYSTS; HYDRATES; HYDROGEN PEROXIDE; MELTING POINTS; NEUTRON DIFFRACTION; SOLID SOLUTIONS; SPECTRA; SURFACES; TITANIUM OXIDES; WATER