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Title: Traveling interface modulations and anisotropic front propagation in ammonia oxidation over Rh(110)

The bistable NH{sub 3} + O{sub 2} reaction over a Rh(110) surface was explored in the pressure range 10{sup −6}–10{sup −3} mbar and in the temperature range 300–900 K using photoemission electron microscopy and low energy electron microscopy as spatially resolving methods. We observed a history dependent anisotropy in front propagation, traveling interface modulations, transitions with secondary reaction fronts, and stationary island structures.
Authors:
 [1] ;  [2] ; ;  [3] ; ; ;  [4]
  1. Instituto de Investigaciones Fisicoquímicas Teóricas y Aplicadas (INIFTA), Fac. Cs. Exactas, Universidad Nacional de La Plata, 64 y Diag. 113 (1900), La Plata (Argentina)
  2. (Germany)
  3. Institut für Energieforschung und Physikalische Technologien, Technische Universität Clausthal, Leibnizstr. 4, 38678 Clausthal-Zellerfeld (Germany)
  4. Institut für Physikalische Chemie und Elektrochemie, Leibniz-Universität Hannover, Callinstr. 3-3a, D-30167 Hannover (Germany)
Publication Date:
OSTI Identifier:
22493231
Resource Type:
Journal Article
Resource Relation:
Journal Name: Journal of Chemical Physics; Journal Volume: 143; Journal Issue: 18; Other Information: (c) 2015 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; AMMONIA; ANISOTROPY; CRYSTAL STRUCTURE; ELECTRON MICROSCOPY; INTERFACES; MODULATION; OXIDATION; PHOTOEMISSION; PRESSURE DEPENDENCE; RHODIUM; SECONDARY REACTIONS; SURFACES; TEMPERATURE DEPENDENCE