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Title: Different routes to methanol: Inelastic neutron scattering spectroscopy of adsorbates on supported copper catalysts

We have investigated methanol synthesis with model supported copper catalysts, Cu/ZnO and Cu/MgO, using CO/H2 and CO2/H2 as feedstocks. Under CO/H2 both catalysts show chemisorbed methoxy as a stable intermediate, the Cu/MgO catalyst also shows hydroxyls on the support. Under CO2/H2 the catalysts behave differently, in that formate is also seen on the catalyst. For the Cu/ZnO catalyst hydroxyls are present on the metal whereas for the Cu/MgO hydroxyls are found on the support. Furthermore, these results are consistent with a recently published model for methanol synthesis and highlight the key role of ZnO in the process.
Authors:
 [1] ;  [1] ;  [2] ;  [3] ;  [4] ;  [1] ;  [5]
  1. Fritz-Haber-Institut der Max Planck-Gesellschaft, Berlin (Germany)
  2. STFC Rutherford Appleton Lab., Didcot (United Kingdom)
  3. SLAC National Accelerator Lab., Menlo Park, CA (United States)
  4. Univ. of Glasgow, Glasgow (United Kingdom)
  5. Univ. of Duisburg-Essen, Essen (Germany)
Publication Date:
OSTI Identifier:
1312796
Grant/Contract Number:
NMI3-II Grant number 283883, CP-CSA_INFRA-2008-1.1; AC02-76SF00515
Type:
Accepted Manuscript
Journal Name:
Physical Chemistry Chemical Physics. PCCP (Print)
Additional Journal Information:
Journal Name: Physical Chemistry Chemical Physics. PCCP (Print); Journal Volume: 18; Journal Issue: 26; Journal ID: ISSN 1463-9076
Publisher:
Royal Society of Chemistry
Research Org:
SLAC National Accelerator Laboratory (SLAC), Menlo Park, CA (United States)
Sponsoring Org:
USDOE
Country of Publication:
United States
Language:
English
Subject:
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY