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

MPG-Autoren
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Kandemir,  Timur
Inorganic Chemistry, Fritz Haber Institute, Max Planck Society;

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Friedrich,  Matthias
Inorganic Chemistry, Fritz Haber Institute, Max Planck Society;

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Schlögl,  Robert
Inorganic Chemistry, Fritz Haber Institute, Max Planck Society;

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c6cp00967k.pdf
(Verlagsversion), 3MB

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Zitation

Kandemir, T., Friedrich, M., Parker, S. F., Studt, F., Lennon, D., Schlögl, R., et al. (2016). Different routes to methanol: inelastic neutron scattering spectroscopy of adsorbates on supported copper catalysts. Physical Chemistry Chemical Physics, 18(26), 17253-17258. doi:10.1039/c6cp00967k.


Zitierlink: http://hdl.handle.net/11858/00-001M-0000-002A-EA75-9
Zusammenfassung
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. These results are consistent with a recently published model for methanol synthesis and highlight the key role of ZnO in the process.